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openwrtv4/target/linux/brcm2708/patches-4.1/0025-BCM2708-Add-core-Device-Tree-support.patch

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brcm2708: update 4.1 patches As usual, this patches were taken (and rebased) from https://github.com/raspberrypi/linux/commits/rpi-4.1.y Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> SVN-Revision: 46853
2015-09-11 16:32:00 +00:00
From 5c77587f9e377f9e30dfca468bee4532a3a10229 Mon Sep 17 00:00:00 2001
brcm2708: add linux 4.1 support Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> SVN-Revision: 46399
2015-07-17 12:48:39 +00:00
From: notro <notro@tronnes.org>
Date: Wed, 9 Jul 2014 14:46:08 +0200
brcm2708: update 4.1 patches As usual, this patches were taken (and rebased) from https://github.com/raspberrypi/linux/commits/rpi-4.1.y Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> SVN-Revision: 46853
2015-09-11 16:32:00 +00:00
Subject: [PATCH 025/171] BCM2708: Add core Device Tree support
brcm2708: add linux 4.1 support Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> SVN-Revision: 46399
2015-07-17 12:48:39 +00:00
Add the bare minimum needed to boot BCM2708 from a Device Tree.
Signed-off-by: Noralf Tronnes <notro@tronnes.org>
BCM2708: DT: change 'axi' nodename to 'soc'
Change DT node named 'axi' to 'soc' so it matches ARCH_BCM2835.
The VC4 bootloader fills in certain properties in the 'axi' subtree,
but since this is part of an upstreaming effort, the name is changed.
Signed-off-by: Noralf Tronnes notro@tronnes.org
BCM2708_DT: Correct length of the peripheral space
---
arch/arm/boot/dts/Makefile | 27 ++
arch/arm/boot/dts/bcm2708-rpi-b-plus.dts | 140 ++++++
arch/arm/boot/dts/bcm2708-rpi-b.dts | 130 ++++++
arch/arm/boot/dts/bcm2708-rpi-cm.dts | 18 +
arch/arm/boot/dts/bcm2708-rpi-cm.dtsi | 51 +++
arch/arm/boot/dts/bcm2708.dtsi | 19 +
arch/arm/boot/dts/bcm2708_common.dtsi | 230 ++++++++++
arch/arm/boot/dts/bcm2709-rpi-2-b.dts | 140 ++++++
arch/arm/boot/dts/bcm2709.dtsi | 70 +++
arch/arm/boot/dts/bcm2835-rpi-b-plus.dts | 45 +-
arch/arm/boot/dts/bcm2835-rpi-b.dts | 29 +-
arch/arm/boot/dts/bcm2835-rpi.dtsi | 97 +++-
arch/arm/boot/dts/bcm2835.dtsi | 45 +-
arch/arm/boot/dts/overlays/Makefile | 57 +++
arch/arm/boot/dts/overlays/README | 493 +++++++++++++++++++++
arch/arm/boot/dts/overlays/ads7846-overlay.dts | 83 ++++
.../dts/overlays/bmp085_i2c-sensor-overlay.dts | 23 +
arch/arm/boot/dts/overlays/dht11-overlay.dts | 39 ++
arch/arm/boot/dts/overlays/enc28j60-overlay.dts | 50 +++
.../boot/dts/overlays/hifiberry-amp-overlay.dts | 39 ++
.../boot/dts/overlays/hifiberry-dac-overlay.dts | 34 ++
.../dts/overlays/hifiberry-dacplus-overlay.dts | 39 ++
.../boot/dts/overlays/hifiberry-digi-overlay.dts | 39 ++
arch/arm/boot/dts/overlays/hy28a-overlay.dts | 87 ++++
arch/arm/boot/dts/overlays/hy28b-overlay.dts | 142 ++++++
arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts | 49 ++
arch/arm/boot/dts/overlays/i2s-mmap-overlay.dts | 13 +
arch/arm/boot/dts/overlays/iqaudio-dac-overlay.dts | 39 ++
.../boot/dts/overlays/iqaudio-dacplus-overlay.dts | 39 ++
arch/arm/boot/dts/overlays/lirc-rpi-overlay.dts | 57 +++
.../arm/boot/dts/overlays/mcp2515-can0-overlay.dts | 69 +++
arch/arm/boot/dts/overlays/mmc-overlay.dts | 19 +
arch/arm/boot/dts/overlays/mz61581-overlay.dts | 109 +++++
arch/arm/boot/dts/overlays/piscreen-overlay.dts | 96 ++++
.../dts/overlays/pitft28-resistive-overlay.dts | 115 +++++
arch/arm/boot/dts/overlays/pps-gpio-overlay.dts | 34 ++
arch/arm/boot/dts/overlays/rpi-dac-overlay.dts | 34 ++
arch/arm/boot/dts/overlays/rpi-display-overlay.dts | 82 ++++
arch/arm/boot/dts/overlays/rpi-proto-overlay.dts | 39 ++
arch/arm/boot/dts/overlays/sdhost-overlay.dts | 78 ++++
arch/arm/boot/dts/overlays/spi-bcm2708-overlay.dts | 18 +
arch/arm/boot/dts/overlays/spi-bcm2835-overlay.dts | 18 +
arch/arm/boot/dts/overlays/tinylcd35-overlay.dts | 216 +++++++++
arch/arm/boot/dts/overlays/w1-gpio-overlay.dts | 39 ++
.../boot/dts/overlays/w1-gpio-pullup-overlay.dts | 41 ++
45 files changed, 3316 insertions(+), 54 deletions(-)
create mode 100644 arch/arm/boot/dts/bcm2708-rpi-b-plus.dts
create mode 100644 arch/arm/boot/dts/bcm2708-rpi-b.dts
create mode 100755 arch/arm/boot/dts/bcm2708-rpi-cm.dts
create mode 100644 arch/arm/boot/dts/bcm2708-rpi-cm.dtsi
create mode 100644 arch/arm/boot/dts/bcm2708.dtsi
create mode 100644 arch/arm/boot/dts/bcm2708_common.dtsi
create mode 100644 arch/arm/boot/dts/bcm2709-rpi-2-b.dts
create mode 100644 arch/arm/boot/dts/bcm2709.dtsi
create mode 100644 arch/arm/boot/dts/overlays/Makefile
create mode 100644 arch/arm/boot/dts/overlays/README
create mode 100644 arch/arm/boot/dts/overlays/ads7846-overlay.dts
create mode 100644 arch/arm/boot/dts/overlays/bmp085_i2c-sensor-overlay.dts
create mode 100644 arch/arm/boot/dts/overlays/dht11-overlay.dts
create mode 100644 arch/arm/boot/dts/overlays/enc28j60-overlay.dts
create mode 100644 arch/arm/boot/dts/overlays/hifiberry-amp-overlay.dts
create mode 100644 arch/arm/boot/dts/overlays/hifiberry-dac-overlay.dts
create mode 100644 arch/arm/boot/dts/overlays/hifiberry-dacplus-overlay.dts
create mode 100644 arch/arm/boot/dts/overlays/hifiberry-digi-overlay.dts
create mode 100644 arch/arm/boot/dts/overlays/hy28a-overlay.dts
create mode 100644 arch/arm/boot/dts/overlays/hy28b-overlay.dts
create mode 100644 arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts
create mode 100644 arch/arm/boot/dts/overlays/i2s-mmap-overlay.dts
create mode 100644 arch/arm/boot/dts/overlays/iqaudio-dac-overlay.dts
create mode 100644 arch/arm/boot/dts/overlays/iqaudio-dacplus-overlay.dts
create mode 100644 arch/arm/boot/dts/overlays/lirc-rpi-overlay.dts
create mode 100755 arch/arm/boot/dts/overlays/mcp2515-can0-overlay.dts
create mode 100644 arch/arm/boot/dts/overlays/mmc-overlay.dts
create mode 100644 arch/arm/boot/dts/overlays/mz61581-overlay.dts
create mode 100644 arch/arm/boot/dts/overlays/piscreen-overlay.dts
create mode 100644 arch/arm/boot/dts/overlays/pitft28-resistive-overlay.dts
create mode 100644 arch/arm/boot/dts/overlays/pps-gpio-overlay.dts
create mode 100644 arch/arm/boot/dts/overlays/rpi-dac-overlay.dts
create mode 100644 arch/arm/boot/dts/overlays/rpi-display-overlay.dts
create mode 100644 arch/arm/boot/dts/overlays/rpi-proto-overlay.dts
create mode 100644 arch/arm/boot/dts/overlays/sdhost-overlay.dts
create mode 100644 arch/arm/boot/dts/overlays/spi-bcm2708-overlay.dts
create mode 100644 arch/arm/boot/dts/overlays/spi-bcm2835-overlay.dts
create mode 100644 arch/arm/boot/dts/overlays/tinylcd35-overlay.dts
create mode 100644 arch/arm/boot/dts/overlays/w1-gpio-overlay.dts
create mode 100644 arch/arm/boot/dts/overlays/w1-gpio-pullup-overlay.dts
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -1,5 +1,21 @@
ifeq ($(CONFIG_OF),y)
+dtb-$(CONFIG_BCM2708_DT) += bcm2708-rpi-b.dtb
+dtb-$(CONFIG_BCM2708_DT) += bcm2708-rpi-b-plus.dtb
+dtb-$(CONFIG_BCM2708_DT) += bcm2708-rpi-cm.dtb
+dtb-$(CONFIG_BCM2709_DT) += bcm2709-rpi-2-b.dtb
+
+# Raspberry Pi
+ifeq ($(CONFIG_BCM2708_DT),y)
+ RPI_DT_OVERLAYS=y
+endif
+ifeq ($(CONFIG_BCM2709_DT),y)
+ RPI_DT_OVERLAYS=y
+endif
+ifeq ($(CONFIG_ARCH_BCM2835),y)
+ RPI_DT_OVERLAYS=y
+endif
+
dtb-$(CONFIG_ARCH_ALPINE) += \
alpine-db.dtb
dtb-$(CONFIG_MACH_ASM9260) += \
@@ -660,7 +676,18 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += \
mt6592-evb.dtb \
mt8127-moose.dtb \
mt8135-evbp1.dtb
+
+targets += dtbs dtbs_install
+targets += $(dtb-y)
+
endif
always := $(dtb-y)
clean-files := *.dtb
+
+# Enable fixups to support overlays on BCM2708 platforms
+ifeq ($(RPI_DT_OVERLAYS),y)
+ DTC_FLAGS ?= -@
+endif
+
+subdir-y += overlays
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2708-rpi-b-plus.dts
@@ -0,0 +1,140 @@
+/dts-v1/;
+
+/include/ "bcm2708.dtsi"
+
+/ {
+ compatible = "brcm,bcm2708";
+ model = "Raspberry Pi Model B+";
+
+ aliases {
+ soc = &soc;
+ spi0 = &spi0;
+ i2c0 = &i2c0;
+ i2c1 = &i2c1;
+ i2s = &i2s;
+ gpio = &gpio;
+ intc = &intc;
+ leds = &leds;
+ audio = &audio;
+ sound = &sound;
+ uart0 = &uart0;
+ uart1 = &uart1;
+ clocks = &clocks;
+ };
+
+ sound: sound {
+ };
+};
+
+&gpio {
+ spi0_pins: spi0_pins {
+ brcm,pins = <7 8 9 10 11>;
+ brcm,function = <4>; /* alt0 */
+ };
+
+ i2c0_pins: i2c0 {
+ brcm,pins = <0 1>;
+ brcm,function = <4>;
+ };
+
+ i2c1_pins: i2c1 {
+ brcm,pins = <2 3>;
+ brcm,function = <4>;
+ };
+
+ i2s_pins: i2s {
+ brcm,pins = <18 19 20 21>;
+ brcm,function = <4>; /* alt0 */
+ };
+};
+
+&mmc {
+ status = "okay";
+ bus-width = <4>;
+};
+
+&fb {
+ status = "okay";
+};
+
+&uart0 {
+ status = "okay";
+};
+
+&spi0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi0_pins>;
+
+ spidev@0{
+ compatible = "spidev";
+ reg = <0>; /* CE0 */
+ #address-cells = <1>;
+ #size-cells = <0>;
+ spi-max-frequency = <500000>;
+ };
+
+ spidev@1{
+ compatible = "spidev";
+ reg = <1>; /* CE1 */
+ #address-cells = <1>;
+ #size-cells = <0>;
+ spi-max-frequency = <500000>;
+ };
+};
+
+&i2c0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c0_pins>;
+ clock-frequency = <100000>;
+};
+
+&i2c1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c1_pins>;
+ clock-frequency = <100000>;
+};
+
+&i2s {
+ #sound-dai-cells = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2s_pins>;
+};
+
+&leds {
+ act_led: act {
+ label = "led0";
+ linux,default-trigger = "mmc0";
+ gpios = <&gpio 47 0>;
+ };
+
+ pwr_led: pwr {
+ label = "led1";
+ linux,default-trigger = "input";
+ gpios = <&gpio 35 0>;
+ };
+};
+
+/ {
+ __overrides__ {
+ uart0 = <&uart0>,"status";
+ uart0_clkrate = <&clk_uart0>,"clock-frequency:0";
+ i2s = <&i2s>,"status";
+ spi = <&spi0>,"status";
+ i2c0 = <&i2c0>,"status";
+ i2c1 = <&i2c1>,"status";
+ i2c0_baudrate = <&i2c0>,"clock-frequency:0";
+ i2c1_baudrate = <&i2c1>,"clock-frequency:0";
+
+ act_led_gpio = <&act_led>,"gpios:4";
+ act_led_activelow = <&act_led>,"gpios:8";
+ act_led_trigger = <&act_led>,"linux,default-trigger";
+
+ pwr_led_gpio = <&pwr_led>,"gpios:4";
+ pwr_led_activelow = <&pwr_led>,"gpios:8";
+ pwr_led_trigger = <&pwr_led>,"linux,default-trigger";
+
+ audio = <&audio>,"status";
+ watchdog = <&watchdog>,"status";
+ random = <&random>,"status";
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2708-rpi-b.dts
@@ -0,0 +1,130 @@
+/dts-v1/;
+
+/include/ "bcm2708.dtsi"
+
+/ {
+ compatible = "brcm,bcm2708";
+ model = "Raspberry Pi Model B";
+
+ aliases {
+ soc = &soc;
+ spi0 = &spi0;
+ i2c0 = &i2c0;
+ i2c1 = &i2c1;
+ i2s = &i2s;
+ gpio = &gpio;
+ intc = &intc;
+ leds = &leds;
+ audio = &audio;
+ sound = &sound;
+ uart0 = &uart0;
+ uart1 = &uart1;
+ clocks = &clocks;
+ };
+
+ sound: sound {
+ };
+};
+
+&gpio {
+ spi0_pins: spi0_pins {
+ brcm,pins = <7 8 9 10 11>;
+ brcm,function = <4>; /* alt0 */
+ };
+
+ i2c0_pins: i2c0 {
+ brcm,pins = <0 1>;
+ brcm,function = <4>;
+ };
+
+ i2c1_pins: i2c1 {
+ brcm,pins = <2 3>;
+ brcm,function = <4>;
+ };
+
+ i2s_pins: i2s {
+ brcm,pins = <28 29 30 31>;
+ brcm,function = <4>; /* alt0 */
+ };
+};
+
+&mmc {
+ status = "okay";
+ bus-width = <4>;
+};
+
+&fb {
+ status = "okay";
+};
+
+&uart0 {
+ status = "okay";
+};
+
+&spi0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi0_pins>;
+
+ spidev@0{
+ compatible = "spidev";
+ reg = <0>; /* CE0 */
+ #address-cells = <1>;
+ #size-cells = <0>;
+ spi-max-frequency = <500000>;
+ };
+
+ spidev@1{
+ compatible = "spidev";
+ reg = <1>; /* CE1 */
+ #address-cells = <1>;
+ #size-cells = <0>;
+ spi-max-frequency = <500000>;
+ };
+};
+
+&i2c0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c0_pins>;
+ clock-frequency = <100000>;
+};
+
+&i2c1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c1_pins>;
+ clock-frequency = <100000>;
+};
+
+&i2s {
+ #sound-dai-cells = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2s_pins>;
+};
+
+&leds {
+ act_led: act {
+ label = "led0";
+ linux,default-trigger = "mmc0";
+ gpios = <&gpio 16 1>;
+ };
+};
+
+/ {
+ __overrides__ {
+ uart0 = <&uart0>,"status";
+ uart0_clkrate = <&clk_uart0>,"clock-frequency:0";
+ i2s = <&i2s>,"status";
+ spi = <&spi0>,"status";
+ i2c0 = <&i2c0>,"status";
+ i2c1 = <&i2c1>,"status";
+ i2c0_baudrate = <&i2c0>,"clock-frequency:0";
+ i2c1_baudrate = <&i2c1>,"clock-frequency:0";
+
+ act_led_gpio = <&act_led>,"gpios:4";
+ act_led_activelow = <&act_led>,"gpios:8";
+ act_led_trigger = <&act_led>,"linux,default-trigger";
+
+ audio = <&audio>,"status";
+ watchdog = <&watchdog>,"status";
+ random = <&random>,"status";
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2708-rpi-cm.dts
@@ -0,0 +1,18 @@
+/dts-v1/;
+
+/include/ "bcm2708-rpi-cm.dtsi"
+
+/ {
+ model = "Raspberry Pi Compute Module";
+};
+
+&uart0 {
+ status = "okay";
+};
+
+/ {
+ __overrides__ {
+ uart0 = <&uart0>,"status";
+ uart0_clkrate = <&clk_uart0>,"clock-frequency:0";
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2708-rpi-cm.dtsi
@@ -0,0 +1,51 @@
+/include/ "bcm2708.dtsi"
+
+/ {
+ aliases {
+ soc = &soc;
+ spi0 = &spi0;
+ i2c0 = &i2c0;
+ i2c1 = &i2c1;
+ i2s = &i2s;
+ gpio = &gpio;
+ intc = &intc;
+ leds = &leds;
+ audio = &audio;
+ sound = &sound;
+ uart0 = &uart0;
+ uart1 = &uart1;
+ clocks = &clocks;
+ };
+
+ sound: sound {
+ };
+};
+
+&leds {
+ act_led: act {
+ label = "led0";
+ linux,default-trigger = "mmc0";
+ gpios = <&gpio 47 0>;
+ };
+};
+
+&mmc {
+ status = "okay";
+ bus-width = <4>;
+};
+
+&fb {
+ status = "okay";
+};
+
+&audio {
+ status = "okay";
+};
+
+/ {
+ __overrides__ {
+ act_led_gpio = <&act_led>,"gpios:4";
+ act_led_activelow = <&act_led>,"gpios:8";
+ act_led_trigger = <&act_led>,"linux,default-trigger";
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2708.dtsi
@@ -0,0 +1,19 @@
+/include/ "bcm2708_common.dtsi"
+
+/ {
+ compatible = "brcm,bcm2708";
+ model = "BCM2708";
+
+ chosen {
+ /* No padding required - the boot loader can do that. */
+ bootargs = "";
+ };
+
+ soc {
+ ranges = <0x7e000000 0x20000000 0x01000000>;
+
+ arm-pmu {
+ compatible = "arm,arm1176-pmu";
+ };
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2708_common.dtsi
@@ -0,0 +1,230 @@
+/include/ "skeleton.dtsi"
+
+/ {
+ interrupt-parent = <&intc>;
+
+ /* Onboard audio */
+ audio: audio {
+ compatible = "brcm,bcm2835-audio";
+ brcm,pwm-channels = <8>;
+ status = "disabled";
+ };
+
+ soc: soc {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ dma: dma@7e007000 {
+ compatible = "brcm,bcm2835-dma";
+ reg = <0x7e007000 0xf00>;
+ interrupts = <1 16>,
+ <1 17>,
+ <1 18>,
+ <1 19>,
+ <1 20>,
+ <1 21>,
+ <1 22>,
+ <1 23>,
+ <1 24>,
+ <1 25>,
+ <1 26>,
+ <1 27>,
+ <1 28>;
+
+ #dma-cells = <1>;
+ brcm,dma-channel-mask = <0x7f35>;
+ };
+
+ intc: interrupt-controller {
+ compatible = "brcm,bcm2708-armctrl-ic";
+ reg = <0x7e00b200 0x200>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
+ watchdog: watchdog@7e100000 {
+ compatible = "brcm,bcm2835-pm-wdt";
+ reg = <0x7e100000 0x28>;
+ status = "disabled";
+ };
+
+ random: rng@7e104000 {
+ compatible = "brcm,bcm2835-rng";
+ reg = <0x7e104000 0x10>;
+ status = "disabled";
+ };
+
+ mailbox: mailbox@7e00b800 {
+ compatible = "brcm,bcm2708-vcio";
+ reg = <0x7e00b880 0x40>;
+ interrupts = <0 1>;
+ };
+
+ gpio: gpio {
+ compatible = "brcm,bcm2835-gpio";
+ reg = <0x7e200000 0xb4>;
+ interrupts = <2 17>, <2 18>;
+
+ gpio-controller;
+ #gpio-cells = <2>;
+
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
+ mmc: mmc@7e300000 {
+ compatible = "brcm,bcm2835-mmc";
+ reg = <0x7e300000 0x100>;
+ interrupts = <2 30>;
+ clocks = <&clk_mmc>;
+ dmas = <&dma 11>,
+ <&dma 11>;
+ dma-names = "tx", "rx";
+ status = "disabled";
+ };
+
+ uart0: uart@7e201000 {
+ compatible = "arm,pl011", "arm,primecell";
+ reg = <0x7e201000 0x1000>;
+ interrupts = <2 25>;
+ clocks = <&clk_uart0 &clk_apb_p>;
+ clock-names = "uartclk","apb_pclk";
+ arm,primecell-periphid = <0x00241011>; // For an explanation, see
+ // https://github.com/raspberrypi/linux/commit/13731d862cf5219216533a3b0de052cee4cc5038
+ status = "disabled";
+ };
+
+ i2s: i2s@7e203000 {
+ compatible = "brcm,bcm2708-i2s";
+ reg = <0x7e203000 0x20>,
+ <0x7e101098 0x02>;
+
+ //dmas = <&dma 2>,
+ // <&dma 3>;
+ dma-names = "tx", "rx";
+ status = "disabled";
+ };
+
+ spi0: spi@7e204000 {
+ compatible = "brcm,bcm2835-spi";
+ reg = <0x7e204000 0x1000>;
+ interrupts = <2 22>;
+ clocks = <&clk_spi>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ /* the dma channels */
+ dmas = <&dma 6>, <&dma 7>;
+ dma-names = "tx", "rx";
+ /* the chipselects used - <0> means native GPIO
+ * add more gpios if necessary as <&gpio 6 1>
+ * (but do not forget to make them output!)
+ */
+ cs-gpios = <0>, <0>;
+ };
+
+ i2c0: i2c@7e205000 {
+ compatible = "brcm,bcm2708-i2c";
+ reg = <0x7e205000 0x1000>;
+ interrupts = <2 21>;
+ clocks = <&clk_i2c>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+
+ uart1: uart@7e215040 {
+ compatible = "brcm,bcm2835-aux-uart", "ns16550";
+ reg = <0x7e215040 0x40>;
+ interrupts = <1 29>;
+ clock-frequency = <500000000>;
+ reg-shift = <2>;
+ no-loopback-test;
+ status = "disabled";
+ };
+
+ i2c1: i2c@7e804000 {
+ compatible = "brcm,bcm2708-i2c";
+ reg = <0x7e804000 0x1000>;
+ interrupts = <2 21>;
+ clocks = <&clk_i2c>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+
+ usb: usb@7e980000 {
+ compatible = "brcm,bcm2708-usb";
+ reg = <0x7e980000 0x10000>,
+ <0x7e006000 0x1000>;
+ interrupts = <2 0>,
+ <1 9>;
+ };
+
+ leds: leds {
+ compatible = "gpio-leds";
+ };
+
+ fb: fb {
+ compatible = "brcm,bcm2708-fb";
+ status = "disabled";
+ };
+
+ vchiq: vchiq {
+ compatible = "brcm,bcm2835-vchiq";
+ reg = <0x7e00b840 0xf>;
+ interrupts = <0 2>;
+ };
+
+ thermal: thermal {
+ compatible = "brcm,bcm2835-thermal";
+ };
+ };
+
+ clocks: clocks {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ clk_mmc: clock@0 {
+ compatible = "fixed-clock";
+ reg = <0>;
+ #clock-cells = <0>;
+ clock-output-names = "mmc";
+ clock-frequency = <250000000>;
+ };
+
+ clk_i2c: clock@1 {
+ compatible = "fixed-clock";
+ reg = <1>;
+ #clock-cells = <0>;
+ clock-output-names = "i2c";
+ clock-frequency = <250000000>;
+ };
+
+ clk_spi: clock@2 {
+ compatible = "fixed-clock";
+ reg = <2>;
+ #clock-cells = <0>;
+ clock-output-names = "spi";
+ clock-frequency = <250000000>;
+ };
+
+ clk_uart0: clock@3 {
+ compatible = "fixed-clock";
+ reg = <3>;
+ #clock-cells = <0>;
+ clock-output-names = "uart0_pclk";
+ clock-frequency = <3000000>;
+ };
+
+ clk_apb_p: clock@4 {
+ compatible = "fixed-clock";
+ reg = <4>;
+ #clock-cells = <0>;
+ clock-output-names = "apb_pclk";
+ clock-frequency = <126000000>;
+ };
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2709-rpi-2-b.dts
@@ -0,0 +1,140 @@
+/dts-v1/;
+
+/include/ "bcm2709.dtsi"
+
+/ {
+ compatible = "brcm,bcm2709";
+ model = "Raspberry Pi 2 Model B";
+
+ aliases {
+ soc = &soc;
+ spi0 = &spi0;
+ i2c0 = &i2c0;
+ i2c1 = &i2c1;
+ i2s = &i2s;
+ gpio = &gpio;
+ intc = &intc;
+ leds = &leds;
+ audio = &audio;
+ sound = &sound;
+ uart0 = &uart0;
+ uart1 = &uart1;
+ clocks = &clocks;
+ };
+
+ sound: sound {
+ };
+};
+
+&gpio {
+ spi0_pins: spi0_pins {
+ brcm,pins = <7 8 9 10 11>;
+ brcm,function = <4>; /* alt0 */
+ };
+
+ i2c0_pins: i2c0 {
+ brcm,pins = <0 1>;
+ brcm,function = <4>;
+ };
+
+ i2c1_pins: i2c1 {
+ brcm,pins = <2 3>;
+ brcm,function = <4>;
+ };
+
+ i2s_pins: i2s {
+ brcm,pins = <18 19 20 21>;
+ brcm,function = <4>; /* alt0 */
+ };
+};
+
+&mmc {
+ status = "okay";
+ bus-width = <4>;
+};
+
+&fb {
+ status = "okay";
+};
+
+&uart0 {
+ status = "okay";
+};
+
+&spi0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi0_pins>;
+
+ spidev@0{
+ compatible = "spidev";
+ reg = <0>; /* CE0 */
+ #address-cells = <1>;
+ #size-cells = <0>;
+ spi-max-frequency = <500000>;
+ };
+
+ spidev@1{
+ compatible = "spidev";
+ reg = <1>; /* CE1 */
+ #address-cells = <1>;
+ #size-cells = <0>;
+ spi-max-frequency = <500000>;
+ };
+};
+
+&i2c0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c0_pins>;
+ clock-frequency = <100000>;
+};
+
+&i2c1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c1_pins>;
+ clock-frequency = <100000>;
+};
+
+&i2s {
+ #sound-dai-cells = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2s_pins>;
+};
+
+&leds {
+ act_led: act {
+ label = "led0";
+ linux,default-trigger = "mmc0";
+ gpios = <&gpio 47 0>;
+ };
+
+ pwr_led: pwr {
+ label = "led1";
+ linux,default-trigger = "input";
+ gpios = <&gpio 35 0>;
+ };
+};
+
+/ {
+ __overrides__ {
+ uart0 = <&uart0>,"status";
+ uart0_clkrate = <&clk_uart0>,"clock-frequency:0";
+ i2s = <&i2s>,"status";
+ spi = <&spi0>,"status";
+ i2c0 = <&i2c0>,"status";
+ i2c1 = <&i2c1>,"status";
+ i2c0_baudrate = <&i2c0>,"clock-frequency:0";
+ i2c1_baudrate = <&i2c1>,"clock-frequency:0";
+
+ act_led_gpio = <&act_led>,"gpios:4";
+ act_led_activelow = <&act_led>,"gpios:8";
+ act_led_trigger = <&act_led>,"linux,default-trigger";
+
+ pwr_led_gpio = <&pwr_led>,"gpios:4";
+ pwr_led_activelow = <&pwr_led>,"gpios:8";
+ pwr_led_trigger = <&pwr_led>,"linux,default-trigger";
+
+ audio = <&audio>,"status";
+ watchdog = <&watchdog>,"status";
+ random = <&random>,"status";
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2709.dtsi
@@ -0,0 +1,70 @@
+/include/ "bcm2708_common.dtsi"
+
+/ {
+ compatible = "brcm,bcm2709";
+ model = "BCM2709";
+
+ chosen {
+ /* No padding required - the boot loader can do that. */
+ bootargs = "";
+ };
+
+ soc {
+ ranges = <0x7e000000 0x3f000000 0x01000000>;
+
+ arm-pmu {
+ compatible = "arm,cortex-a7-pmu";
+ interrupts = <3 9>;
+ };
+ };
+
+ timer {
+ compatible = "arm,armv7-timer";
+ clock-frequency = <19200000>;
+ interrupts = <3 0>, // PHYS_SECURE_PPI
+ <3 1>, // PHYS_NONSECURE_PPI
+ <3 3>, // VIRT_PPI
+ <3 2>; // HYP_PPI
+ always-on;
+ };
+
+ cpus: cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ v7_cpu0: cpu@0 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a7";
+ reg = <0xf00>;
+ clock-frequency = <800000000>;
+ };
+
+ v7_cpu1: cpu@1 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a7";
+ reg = <0xf01>;
+ clock-frequency = <800000000>;
+ };
+
+ v7_cpu2: cpu@2 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a7";
+ reg = <0xf02>;
+ clock-frequency = <800000000>;
+ };
+
+ v7_cpu3: cpu@3 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a7";
+ reg = <0xf03>;
+ clock-frequency = <800000000>;
+ };
+ };
+
+ __overrides__ {
+ arm_freq = <&v7_cpu0>, "clock-frequency:0",
+ <&v7_cpu1>, "clock-frequency:0",
+ <&v7_cpu2>, "clock-frequency:0",
+ <&v7_cpu3>, "clock-frequency:0";
+ };
+};
--- a/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts
+++ b/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts
@@ -4,27 +4,40 @@
/ {
compatible = "raspberrypi,model-b-plus", "brcm,bcm2835";
model = "Raspberry Pi Model B+";
-
- leds {
- act {
- gpios = <&gpio 47 0>;
- };
-
- pwr {
- label = "PWR";
- gpios = <&gpio 35 0>;
- default-state = "keep";
- linux,default-trigger = "default-on";
- };
- };
};
&gpio {
- pinctrl-0 = <&gpioout &alt0 &i2s_alt0 &alt3>;
-
- /* I2S interface */
- i2s_alt0: i2s_alt0 {
+ i2s_pins: i2s {
brcm,pins = <18 19 20 21>;
brcm,function = <4>; /* alt0 */
};
};
+
+&i2s {
+ #sound-dai-cells = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2s_pins>;
+};
+
+&act_led {
+ gpios = <&gpio 47 0>;
+};
+
+&leds {
+ pwr_led: pwr {
+ label = "led1";
+ linux,default-trigger = "input";
+ gpios = <&gpio 35 0>;
+ };
+};
+
+/ {
+ __overrides__ {
+ act_led_gpio = <&act_led>,"gpios:4";
+ act_led_activelow = <&act_led>,"gpios:8";
+
+ pwr_led_gpio = <&pwr_led>,"gpios:4";
+ pwr_led_activelow = <&pwr_led>,"gpios:8";
+ pwr_led_trigger = <&pwr_led>,"linux,default-trigger";
+ };
+};
--- a/arch/arm/boot/dts/bcm2835-rpi-b.dts
+++ b/arch/arm/boot/dts/bcm2835-rpi-b.dts
@@ -5,19 +5,28 @@
compatible = "raspberrypi,model-b", "brcm,bcm2835";
model = "Raspberry Pi Model B";
- leds {
- act {
- gpios = <&gpio 16 1>;
- };
- };
};
&gpio {
- pinctrl-0 = <&gpioout &alt0 &i2s_alt2 &alt3>;
-
- /* I2S interface */
- i2s_alt2: i2s_alt2 {
+ i2s_pins: i2s {
brcm,pins = <28 29 30 31>;
- brcm,function = <6>; /* alt2 */
+ brcm,function = <4>; /* alt0 */
+ };
+};
+
+&i2s {
+ #sound-dai-cells = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2s_pins>;
+};
+
+&act_led {
+ gpios = <&gpio 16 1>;
+};
+
+/ {
+ __overrides__ {
+ act_led_gpio = <&act_led>,"gpios:4";
+ act_led_activelow = <&act_led>,"gpios:8";
};
};
--- a/arch/arm/boot/dts/bcm2835-rpi.dtsi
+++ b/arch/arm/boot/dts/bcm2835-rpi.dtsi
@@ -1,51 +1,112 @@
/include/ "bcm2835.dtsi"
/ {
+ /* This is left here in case u-boot needs it */
memory {
reg = <0 0x10000000>;
};
- leds {
+ aliases {
+ soc = &soc;
+ spi0 = &spi0;
+ i2c0 = &i2c0;
+ i2c1 = &i2c1;
+ i2s = &i2s;
+ gpio = &gpio;
+ intc = &intc;
+ leds = &leds;
+ sound = &sound;
+ };
+
+ leds: leds {
compatible = "gpio-leds";
- act {
- label = "ACT";
- default-state = "keep";
- linux,default-trigger = "heartbeat";
+ act_led: act {
+ label = "led0";
+ linux,default-trigger = "mmc0";
};
};
+
+ /* Onboard audio */
+ audio: audio {
+ compatible = "brcm,bcm2835-audio";
+ brcm,pwm-channels = <8>;
+ status = "disabled";
+ };
+
+ /* External sound card */
+ sound: sound {
+ };
};
&gpio {
- pinctrl-names = "default";
+ spi0_pins: spi0_pins {
+ brcm,pins = <7 8 9 10 11>;
+ brcm,function = <4>; /* alt0 */
+ };
- gpioout: gpioout {
- brcm,pins = <6>;
- brcm,function = <1>; /* GPIO out */
+ i2c0_pins: i2c0 {
+ brcm,pins = <0 1>;
+ brcm,function = <4>;
};
- alt0: alt0 {
- brcm,pins = <0 1 2 3 4 5 7 8 9 10 11 14 15 40 45>;
- brcm,function = <4>; /* alt0 */
+ i2c1_pins: i2c1 {
+ brcm,pins = <2 3>;
+ brcm,function = <4>;
+ };
+};
+
+&spi0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi0_pins>;
+
+ spidev@0{
+ compatible = "spidev";
+ reg = <0>; /* CE0 */
+ #address-cells = <1>;
+ #size-cells = <0>;
+ spi-max-frequency = <500000>;
};
- alt3: alt3 {
- brcm,pins = <48 49 50 51 52 53>;
- brcm,function = <7>; /* alt3 */
+ spidev@1{
+ compatible = "spidev";
+ reg = <1>; /* CE1 */
+ #address-cells = <1>;
+ #size-cells = <0>;
+ spi-max-frequency = <500000>;
};
};
&i2c0 {
- status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c0_pins>;
clock-frequency = <100000>;
};
&i2c1 {
- status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c1_pins>;
clock-frequency = <100000>;
};
-&sdhci {
+&mmc {
status = "okay";
bus-width = <4>;
};
+
+&fb {
+ status = "okay";
+};
+
+/ {
+ __overrides__ {
+ i2s = <&i2s>,"status";
+ spi = <&spi0>,"status";
+ i2c0 = <&i2c0>,"status";
+ i2c1 = <&i2c1>,"status";
+ i2c0_baudrate = <&i2c0>,"clock-frequency:0";
+ i2c1_baudrate = <&i2c1>,"clock-frequency:0";
+ act_led_trigger = <&act_led>,"linux,default-trigger";
+ audio = <&audio>,"status";
+ };
+};
--- a/arch/arm/boot/dts/bcm2835.dtsi
+++ b/arch/arm/boot/dts/bcm2835.dtsi
@@ -6,14 +6,15 @@
interrupt-parent = <&intc>;
chosen {
- bootargs = "earlyprintk console=ttyAMA0";
+ bootargs = "";
};
- soc {
+ soc: soc {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <1>;
ranges = <0x7e000000 0x20000000 0x02000000>;
+ dma-ranges = <0x40000000 0x00000000 0x20000000>;
timer@7e003000 {
compatible = "brcm,bcm2835-system-timer";
@@ -50,16 +51,22 @@
#interrupt-cells = <2>;
};
- watchdog@7e100000 {
+ watchdog: watchdog@7e100000 {
compatible = "brcm,bcm2835-pm-wdt";
reg = <0x7e100000 0x28>;
};
- rng@7e104000 {
+ random: rng@7e104000 {
compatible = "brcm,bcm2835-rng";
reg = <0x7e104000 0x10>;
};
+ mailbox: mailbox@7e00b800 {
+ compatible = "brcm,bcm2708-vcio";
+ reg = <0x7e00b880 0x40>;
+ interrupts = <0 1>;
+ };
+
gpio: gpio@7e200000 {
compatible = "brcm,bcm2835-gpio";
reg = <0x7e200000 0xb4>;
@@ -83,7 +90,7 @@
#interrupt-cells = <2>;
};
- uart@7e201000 {
+ uart0: uart@7e201000 {
compatible = "brcm,bcm2835-pl011", "arm,pl011", "arm,primecell";
reg = <0x7e201000 0x1000>;
interrupts = <2 25>;
@@ -102,7 +109,7 @@
status = "disabled";
};
- spi: spi@7e204000 {
+ spi0: spi@7e204000 {
compatible = "brcm,bcm2835-spi";
reg = <0x7e204000 0x1000>;
interrupts = <2 22>;
@@ -122,11 +129,14 @@
status = "disabled";
};
- sdhci: sdhci@7e300000 {
- compatible = "brcm,bcm2835-sdhci";
+ mmc: mmc@7e300000 {
+ compatible = "brcm,bcm2835-mmc";
reg = <0x7e300000 0x100>;
interrupts = <2 30>;
clocks = <&clk_mmc>;
+ dmas = <&dma 11>,
+ <&dma 11>;
+ dma-names = "tx", "rx";
status = "disabled";
};
@@ -140,7 +150,7 @@
status = "disabled";
};
- usb@7e980000 {
+ usb: usb@7e980000 {
compatible = "brcm,bcm2835-usb";
reg = <0x7e980000 0x10000>;
interrupts = <1 9>;
@@ -149,6 +159,21 @@
arm-pmu {
compatible = "arm,arm1176-pmu";
};
+
+ fb: fb {
+ compatible = "brcm,bcm2708-fb";
+ status = "disabled";
+ };
+
+ vchiq: vchiq {
+ compatible = "brcm,bcm2835-vchiq";
+ reg = <0x7e00b840 0xf>;
+ interrupts = <0 2>;
+ };
+
+ thermal: thermal {
+ compatible = "brcm,bcm2835-thermal";
+ };
};
clocks {
@@ -161,7 +186,7 @@
reg = <0>;
#clock-cells = <0>;
clock-output-names = "mmc";
- clock-frequency = <100000000>;
+ clock-frequency = <250000000>;
};
clk_i2c: clock@1 {
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -0,0 +1,57 @@
+ifeq ($(CONFIG_OF),y)
+
+# Overlays for the Raspberry Pi platform
+
+ifeq ($(CONFIG_BCM2708_DT),y)
+ RPI_DT_OVERLAYS=y
+endif
+ifeq ($(CONFIG_BCM2709_DT),y)
+ RPI_DT_OVERLAYS=y
+endif
+ifeq ($(CONFIG_ARCH_BCM2835),y)
+ RPI_DT_OVERLAYS=y
+endif
+
+dtb-$(RPI_DT_OVERLAYS) += ads7846-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += bmp085_i2c-sensor-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += dht11-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += enc28j60-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += hifiberry-amp-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += hifiberry-dac-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += hifiberry-dacplus-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += hifiberry-digi-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += hy28a-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += hy28b-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += i2c-rtc-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += i2s-mmap-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += iqaudio-dac-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += iqaudio-dacplus-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += lirc-rpi-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += mcp2515-can0-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += mmc-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += mz61581-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += piscreen-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += pitft28-resistive-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += pps-gpio-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += rpi-dac-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += rpi-display-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += rpi-proto-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += sdhost-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += spi-bcm2708-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += spi-bcm2835-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += tinylcd35-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += w1-gpio-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += w1-gpio-pullup-overlay.dtb
+
+targets += dtbs dtbs_install
+targets += $(dtb-y)
+
+endif
+
+always := $(dtb-y)
+clean-files := *.dtb
+
+# Enable fixups to support overlays on BCM2708 platforms
+ifeq ($(RPI_DT_OVERLAYS),y)
+ DTC_FLAGS ?= -@
+endif
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/README
@@ -0,0 +1,493 @@
+Introduction
+============
+
+This directory contains Device Tree overlays. Device Tree makes it possible
+to support many hardware configurations with a single kernel and without the
+need to explicitly load or blacklist kernel modules. Note that this isn't a
+"pure" Device Tree configuration (c.f. MACH_BCM2835) - some on-board devices
+are still configured by the board support code, but the intention is to
+eventually reach that goal.
+
+On Raspberry Pi, Device Tree usage is controlled from /boot/config.txt. By
+default, the Raspberry Pi kernel boots with device tree enabled. You can
+completely disable DT usage (for now) by adding:
+
+ device_tree=
+
+to your config.txt, which should cause your Pi to revert to the old way of
+doing things after a reboot.
+
+In /boot you will find a .dtb for each base platform. This describes the
+hardware that is part of the Raspberry Pi board. The loader (start.elf and its
+siblings) selects the .dtb file appropriate for the platform by name, and reads
+it into memory. At this point, all of the optional interfaces (i2c, i2s, spi)
+are disabled, but they can be enabled using Device Tree parameters:
+
+ dtparam=i2c=on,i2s=on,spi=on
+
+However, this shouldn't be necessary in many use cases because loading an
+overlay that requires one of those interfaces will cause it to be enabled
+automatically, and it is advisable to only enable interfaces if they are
+needed.
+
+Configuring additional, optional hardware is done using Device Tree overlays
+(see below).
+
+raspi-config
+============
+
+The Advanced Options section of the raspi-config utility can enable and disable
+Device Tree use, as well as toggling the I2C and SPI interfaces. Note that it
+is possible to both enable an interface and blacklist the driver, if for some
+reason you should want to defer the loading.
+
+Modules
+=======
+
+As well as describing the hardware, Device Tree also gives enough information
+to allow suitable driver modules to be located and loaded, with the corollary
+that unneeded modules are not loaded. As a result it should be possible to
+remove lines from /etc/modules, and /etc/modprobe.d/raspi-blacklist.conf can
+have its contents deleted (or commented out).
+
+Using Overlays
+==============
+
+Overlays are loaded using the "dtoverlay" directive. As an example, consider the
+popular lirc-rpi module, the Linux Infrared Remote Control driver. In the
+pre-DT world this would be loaded from /etc/modules, with an explicit
+"modprobe lirc-rpi" command, or programmatically by lircd. With DT enabled,
+this becomes a line in config.txt:
+
+ dtoverlay=lirc-rpi
+
+This causes the file /boot/overlays/lirc-rpi-overlay.dtb to be loaded. By
+default it will use GPIOs 17 (out) and 18 (in), but this can be modified using
+DT parameters:
+
+ dtoverlay=lirc-rpi,gpio_out_pin=17,gpio_in_pin=13
+
+Parameters always have default values, although in some cases (e.g. "w1-gpio")
+it is necessary to provided multiple overlays in order to get the desired
+behaviour. See the list of overlays below for a description of the parameters and their defaults.
+
+The Overlay and Parameter Reference
+===================================
+
+Name: <The base DTB>
+Info: Configures the base Raspberry Pi hardware
+Load: <loaded automatically>
+Params:
+ audio Set to "on" to disable the onboard ALSA audio
+ interface (default "off")
+
+ i2c_arm Set to "on" to enable the ARM's i2c interface
+ (default "off")
+
+ i2c_vc Set to "on" to enable the i2c interface
+ usually reserved for the VideoCore processor
+ (default "off")
+
+ i2c An alias for i2c_arm
+
+ i2c_arm_baudrate Set the baudrate of the ARM's i2c interface
+ (default "100000")
+
+ i2c_vc_baudrate Set the baudrate of the VideoCore i2c interface
+ (default "100000")
+
+ i2c_baudrate An alias for i2c_arm_baudrate
+
+ i2s Set to "on" to enable the i2s interface
+ (default "off")
+
+ spi Set to "on" to enable the spi interfaces
+ (default "off")
+
+ random Set to "on" to enable the hardware random
+ number generator (default "off")
+
+ uart0 Set to "off" to disable uart0 (default "on")
+
+ watchdog Set to "on" to enable the hardware watchdog
+ (default "off")
+
+ act_led_trigger Choose which activity the LED tracks.
+ Use "heartbeat" for a nice load indicator.
+ (default "mmc")
+
+ act_led_activelow Set to "on" to invert the sense of the LED
+ (default "off")
+
+ act_led_gpio Set which GPIO to use for the activity LED
+ (in case you want to connect it to an external
+ device)
+ (default "16" on a non-Plus board, "47" on a
+ Plus or Pi 2)
+
+ pwr_led_trigger
+ pwr_led_activelow
+ pwr_led_gpio
+ As for act_led_*, but using the PWR LED.
+ Not available on Model A/B boards.
+
+ N.B. It is recommended to only enable those interfaces that are needed.
+ Leaving all interfaces enabled can lead to unwanted behaviour (i2c_vc
+ interfering with Pi Camera, I2S and SPI hogging GPIO pins, etc.)
+ Note also that i2c, i2c_arm and i2c_vc are aliases for the physical
+ interfaces i2c0 and i2c1. Use of the numeric variants is still possible
+ but deprecated because the ARM/VC assignments differ between board
+ revisions. The same board-specific mapping applies to i2c_baudrate,
+ and the other i2c baudrate parameters.
+
+
+Name: ads7846
+Info: ADS7846 Touch controller
+Load: dtoverlay=ads7846,<param>=<val>
+Params: cs SPI bus Chip Select (default 1)
+ speed SPI bus speed (default 2Mhz, max 3.25MHz)
+ penirq GPIO used for PENIRQ. REQUIRED
+ penirq_pull Set GPIO pull (default 0=none, 2=pullup)
+ swapxy Swap x and y axis
+ xmin Minimum value on the X axis (default 0)
+ ymin Minimum value on the Y axis (default 0)
+ xmax Maximum value on the X axis (default 4095)
+ ymax Maximum value on the Y axis (default 4095)
+ pmin Minimum reported pressure value (default 0)
+ pmax Maximum reported pressure value (default 65535)
+ xohms Touchpanel sensitivity (X-plate resistance)
+ (default 400)
+
+ penirq is required and usually xohms (60-100) has to be set as well.
+ Apart from that, pmax (255) and swapxy are also common.
+ The rest of the calibration can be done with xinput-calibrator.
+ See: github.com/notro/fbtft/wiki/FBTFT-on-Raspian
+ Device Tree binding document:
+ www.kernel.org/doc/Documentation/devicetree/bindings/input/ads7846.txt
+
+
+Name: bmp085_i2c-sensor
+Info: Configures the BMP085/BMP180 digital barometric pressure and temperature
+ sensors from Bosch Sensortec
+Load: dtoverlay=bmp085_i2c-sensor
+Params: <None>
+
+
+[ The ds1307-rtc overlay has been deleted. See i2c-rtc. ]
+
+
+Name: enc28j60
+Info: Overlay for the Microchip ENC28J60 Ethernet Controller (SPI)
+Load: dtoverlay=enc28j60,<param>=<val>
+Params: int_pin GPIO used for INT (default 25)
+
+ speed SPI bus speed (default 12000000)
+
+
+Name: hifiberry-amp
+Info: Configures the HifiBerry Amp and Amp+ audio cards
+Load: dtoverlay=hifiberry-amp
+Params: <None>
+
+
+Name: hifiberry-dac
+Info: Configures the HifiBerry DAC audio card
+Load: dtoverlay=hifiberry-dac
+Params: <None>
+
+
+Name: hifiberry-dacplus
+Info: Configures the HifiBerry DAC+ audio card
+Load: dtoverlay=hifiberry-dacplus
+Params: <None>
+
+
+Name: hifiberry-digi
+Info: Configures the HifiBerry Digi audio card
+Load: dtoverlay=hifiberry-digi
+Params: <None>
+
+
+Name: hy28a
+Info: HY28A - 2.8" TFT LCD Display Module by HAOYU Electronics
+ Default values match Texy's display shield
+Load: dtoverlay=hy28a,<param>=<val>
+Params: speed Display SPI bus speed
+
+ rotate Display rotation {0,90,180,270}
+
+ fps Delay between frame updates
+
+ debug Debug output level {0-7}
+
+ xohms Touchpanel sensitivity (X-plate resistance)
+
+ resetgpio GPIO used to reset controller
+
+ ledgpio GPIO used to control backlight
+
+
+Name: hy28b
+Info: HY28B - 2.8" TFT LCD Display Module by HAOYU Electronics
+ Default values match Texy's display shield
+Load: dtoverlay=hy28b,<param>=<val>
+Params: speed Display SPI bus speed
+
+ rotate Display rotation {0,90,180,270}
+
+ fps Delay between frame updates
+
+ debug Debug output level {0-7}
+
+ xohms Touchpanel sensitivity (X-plate resistance)
+
+ resetgpio GPIO used to reset controller
+
+ ledgpio GPIO used to control backlight
+
+
+Name: i2c-rtc
+Info: Adds support for a number of I2C Real Time Clock devices
+Load: dtoverlay=i2c-rtc,<param>
+Params: ds1307 Select the DS1307 device
+
+ ds3231 Select the DS3231 device
+
+ pcf2127 Select the PCF2127 device
+
+ pcf8523 Select the PCF8523 device
+
+ pcf8563 Select the PCF8563 device
+
+
+Name: iqaudio-dac
+Info: Configures the IQaudio DAC audio card
+Load: dtoverlay=iqaudio-dac
+Params: <None>
+
+
+Name: iqaudio-dacplus
+Info: Configures the IQaudio DAC+ audio card
+Load: dtoverlay=iqaudio-dacplus
+Params: <None>
+
+
+Name: lirc-rpi
+Info: Configures lirc-rpi (Linux Infrared Remote Control for Raspberry Pi)
+ Consult the module documentation for more details.
+Load: dtoverlay=lirc-rpi,<param>=<val>,...
+Params: gpio_out_pin GPIO for output (default "17")
+
+ gpio_in_pin GPIO for input (default "18")
+
+ gpio_in_pull Pull up/down/off on the input pin
+ (default "down")
+
+ sense Override the IR receive auto-detection logic:
+ "1" = force active high
+ "0" = force active low
+ "-1" = use auto-detection
+ (default "-1")
+
+ softcarrier Turn the software carrier "on" or "off"
+ (default "on")
+
+ invert "on" = invert the output pin (default "off")
+
+ debug "on" = enable additional debug messages
+ (default "off")
+
+
+Name: mcp2515-can0
+Info: Configures the MCP2515 CAN controller
+Load: dtoverlay=mcp2515-can0,<param>=<val>
+Params: oscillator Clock frequency for the CAN controller (Hz)
+
+ spimaxfrequency Maximum SPI frequence (Hz)
+
+ interrupt GPIO for interrupt signal
+
+
+Name: mmc
+Info: Selects the bcm2835-mmc SD/MMC driver, optionally with overclock
+Load: dtoverlay=mmc,<param>=<val>
+Params: overclock_50 Clock (in MHz) to use when the MMC framework
+ requests 50MHz
+ force_pio Disable DMA support
+
+
+Name: mz61581
+Info: MZ61581 display by Tontec
+Load: dtoverlay=mz61581,<param>=<val>
+Params: speed Display SPI bus speed
+
+ rotate Display rotation {0,90,180,270}
+
+ fps Delay between frame updates
+
+ debug Debug output level {0-7}
+
+ xohms Touchpanel sensitivity (X-plate resistance)
+
+
+[ The pcf2127-rtc overlay has been deleted. See i2c-rtc. ]
+
+
+[ The pcf8523-rtc overlay has been deleted. See i2c-rtc. ]
+
+
+[ The pcf8563-rtc overlay has been deleted. See i2c-rtc. ]
+
+
+Name: piscreen
+Info: PiScreen display by OzzMaker.com
+Load: dtoverlay=piscreen,<param>=<val>
+Params: speed Display SPI bus speed
+
+ rotate Display rotation {0,90,180,270}
+
+ fps Delay between frame updates
+
+ debug Debug output level {0-7}
+
+ xohms Touchpanel sensitivity (X-plate resistance)
+
+
+Name: pitft28-resistive
+Info: Adafruit PiTFT 2.8" resistive touch screen
+Load: dtoverlay=pitft28-resistive,<param>=<val>
+Params: speed Display SPI bus speed
+
+ rotate Display rotation {0,90,180,270}
+
+ fps Delay between frame updates
+
+ debug Debug output level {0-7}
+
+
+Name: pps-gpio
+Info: Configures the pps-gpio (pulse-per-second time signal via GPIO).
+Load: dtoverlay=pps-gpio,<param>=<val>
+Params: gpiopin Input GPIO (default "18")
+
+
+Name: rpi-dac
+Info: Configures the RPi DAC audio card
+Load: dtoverlay=rpi-dac
+Params: <None>
+
+
+Name: rpi-display
+Info: RPi-Display - 2.8" Touch Display by Watterott
+Load: dtoverlay=rpi-display,<param>=<val>
+Params: speed Display SPI bus speed
+
+ rotate Display rotation {0,90,180,270}
+
+ fps Delay between frame updates
+
+ debug Debug output level {0-7}
+
+ xohms Touchpanel sensitivity (X-plate resistance)
+
+
+Name: rpi-proto
+Info: Configures the RPi Proto audio card
+Load: dtoverlay=rpi-proto
+Params: <None>
+
+
+Name: sdhost
+Info: Selects the bcm2835-sdhost SD/MMC driver, optionally with overclock
+Load: dtoverlay=sdhost,<param>=<val>
+Params: overclock_50 Clock (in MHz) to use when the MMC framework
+ requests 50MHz
+ force_pio Disable DMA support
+
+
+Name: spi-bcm2708
+Info: Selects the bcm2708-spi SPI driver
+Load: dtoverlay=spi-bcm2708
+Params: <None>
+
+
+Name: spi-bcm2835
+Info: Selects the bcm2835-spi SPI driver
+Load: dtoverlay=spi-bcm2835
+Params: <None>
+
+
+Name: tinylcd35
+Info: 3.5" Color TFT Display by www.tinylcd.com
+ Options: Touch, RTC, keypad
+Load: dtoverlay=tinylcd35,<param>=<val>
+Params: speed Display SPI bus speed
+
+ rotate Display rotation {0,90,180,270}
+
+ fps Delay between frame updates
+
+ debug Debug output level {0-7}
+
+ touch Enable touch panel
+
+ touchgpio Touch controller IRQ GPIO
+
+ xohms Touchpanel: Resistance of X-plate in ohms
+
+ rtc-pcf PCF8563 Real Time Clock
+
+ rtc-ds DS1307 Real Time Clock
+
+ keypad Enable keypad
+
+ Examples:
+ Display with touchpanel, PCF8563 RTC and keypad:
+ dtoverlay=tinylcd35,touch,rtc-pcf,keypad
+ Old touch display:
+ dtoverlay=tinylcd35,touch,touchgpio=3
+
+
+Name: w1-gpio
+Info: Configures the w1-gpio Onewire interface module.
+ Use this overlay if you *don't* need a GPIO to drive an external pullup.
+Load: dtoverlay=w1-gpio,<param>=<val>
+Params: gpiopin GPIO for I/O (default "4")
+
+ pullup Non-zero, "on", or "y" to enable the parasitic
+ power (2-wire, power-on-data) feature
+
+
+Name: w1-gpio-pullup
+Info: Configures the w1-gpio Onewire interface module.
+ Use this overlay if you *do* need a GPIO to drive an external pullup.
+Load: dtoverlay=w1-gpio-pullup,<param>=<val>,...
+Params: gpiopin GPIO for I/O (default "4")
+
+ pullup Non-zero, "on", or "y" to enable the parasitic
+ power (2-wire, power-on-data) feature
+
+ extpullup GPIO for external pullup (default "5")
+
+
+Troubleshooting
+===============
+
+If you are experiencing problems that you think are DT-related, enable DT
+diagnostic output by adding this to /boot/config.txt:
+
+ dtdebug=on
+
+and rebooting. Then run:
+
+ sudo vcdbg log msg
+
+and look for relevant messages.
+
+Further reading
+===============
+
+This is only meant to be a quick introduction to the subject of Device Tree on
+Raspberry Pi. There is a more complete explanation here:
+
+http://www.raspberrypi.org/documentation/configuration/device-tree.md
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/ads7846-overlay.dts
@@ -0,0 +1,83 @@
+/*
+ * Generic Device Tree overlay for the ADS7846 touch controller
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+ fragment@0 {
+ target = <&spi0>;
+ __overlay__ {
+ status = "okay";
+
+ spidev@0{
+ status = "disabled";
+ };
+
+ spidev@1{
+ status = "disabled";
+ };
+ };
+ };
+
+ fragment@1 {
+ target = <&gpio>;
+ __overlay__ {
+ ads7846_pins: ads7846_pins {
+ brcm,pins = <255>; /* illegal default value */
+ brcm,function = <0>; /* in */
+ brcm,pull = <0>; /* none */
+ };
+ };
+ };
+
+ fragment@2 {
+ target = <&spi0>;
+ __overlay__ {
+ /* needed to avoid dtc warning */
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ ads7846: ads7846@1 {
+ compatible = "ti,ads7846";
+ reg = <1>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&ads7846_pins>;
+
+ spi-max-frequency = <2000000>;
+ interrupts = <255 2>; /* high-to-low edge triggered */
+ interrupt-parent = <&gpio>;
+ pendown-gpio = <&gpio 255 0>;
+
+ /* driver defaults */
+ ti,x-min = /bits/ 16 <0>;
+ ti,y-min = /bits/ 16 <0>;
+ ti,x-max = /bits/ 16 <0x0FFF>;
+ ti,y-max = /bits/ 16 <0x0FFF>;
+ ti,pressure-min = /bits/ 16 <0>;
+ ti,pressure-max = /bits/ 16 <0xFFFF>;
+ ti,x-plate-ohms = /bits/ 16 <400>;
+ };
+ };
+ };
+ __overrides__ {
+ cs = <&ads7846>,"reg:0";
+ speed = <&ads7846>,"spi-max-frequency:0";
+ penirq = <&ads7846_pins>,"brcm,pins:0", /* REQUIRED */
+ <&ads7846>,"interrupts:0",
+ <&ads7846>,"pendown-gpio:4";
+ penirq_pull = <&ads7846_pins>,"brcm,pull:0";
+ swapxy = <&ads7846>,"ti,swap-xy?";
+ xmin = <&ads7846>,"ti,x-min;0";
+ ymin = <&ads7846>,"ti,y-min;0";
+ xmax = <&ads7846>,"ti,x-max;0";
+ ymax = <&ads7846>,"ti,y-max;0";
+ pmin = <&ads7846>,"ti,pressure-min;0";
+ pmax = <&ads7846>,"ti,pressure-max;0";
+ xohms = <&ads7846>,"ti,x-plate-ohms;0";
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/bmp085_i2c-sensor-overlay.dts
@@ -0,0 +1,23 @@
+// Definitions for BMP085/BMP180 digital barometric pressure and temperature sensors from Bosch Sensortec
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2708";
+
+ fragment@0 {
+ target = <&i2c1>;
+ __overlay__ {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ bmp085@77 {
+ compatible = "bosch,bmp085";
+ reg = <0x77>;
+ default-oversampling = <3>;
+ status = "okay";
+ };
+ };
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/dht11-overlay.dts
@@ -0,0 +1,39 @@
+/*
+ * Overlay for the DHT11/21/22 humidity/temperature sensor modules.
+ */
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2708";
+
+ fragment@0 {
+ target-path = "/";
+ __overlay__ {
+
+ dht11: dht11@0 {
+ compatible = "dht11";
+ pinctrl-names = "default";
+ pinctrl-0 = <&dht11_pins>;
+ gpios = <&gpio 4 0>;
+ status = "okay";
+ };
+ };
+ };
+
+ fragment@1 {
+ target = <&gpio>;
+ __overlay__ {
+ dht11_pins: dht11_pins {
+ brcm,pins = <4>;
+ brcm,function = <0>; // in
+ brcm,pull = <0>; // off
+ };
+ };
+ };
+
+ __overrides__ {
+ gpiopin = <&dht11_pins>,"brcm,pins:0",
+ <&dht11>,"gpios:4";
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/enc28j60-overlay.dts
@@ -0,0 +1,50 @@
+// Overlay for the Microchip ENC28J60 Ethernet Controller
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2708";
+
+ fragment@0 {
+ target = <&spi0>;
+ __overlay__ {
+ /* needed to avoid dtc warning */
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ status = "okay";
+
+ spidev@0{
+ status = "disabled";
+ };
+
+ eth1: enc28j60@0{
+ compatible = "microchip,enc28j60";
+ reg = <0>; /* CE0 */
+ pinctrl-names = "default";
+ pinctrl-0 = <&eth1_pins>;
+ interrupt-parent = <&gpio>;
+ interrupts = <25 0x2>; /* falling edge */
+ spi-max-frequency = <12000000>;
+ status = "okay";
+ };
+ };
+ };
+
+ fragment@1 {
+ target = <&gpio>;
+ __overlay__ {
+ eth1_pins: eth1_pins {
+ brcm,pins = <25>;
+ brcm,function = <0>; /* in */
+ brcm,pull = <0>; /* none */
+ };
+ };
+ };
+
+ __overrides__ {
+ int_pin = <&eth1>, "interrupts:0",
+ <&eth1_pins>, "brcm,pins:0";
+ speed = <&eth1>, "spi-max-frequency:0";
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/hifiberry-amp-overlay.dts
@@ -0,0 +1,39 @@
+// Definitions for HiFiBerry Amp/Amp+
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2708";
+
+ fragment@0 {
+ target = <&sound>;
+ __overlay__ {
+ compatible = "hifiberry,hifiberry-amp";
+ i2s-controller = <&i2s>;
+ status = "okay";
+ };
+ };
+
+ fragment@1 {
+ target = <&i2s>;
+ __overlay__ {
+ status = "okay";
+ };
+ };
+
+ fragment@2 {
+ target = <&i2c1>;
+ __overlay__ {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ tas5713@1b {
+ #sound-dai-cells = <0>;
+ compatible = "ti,tas5713";
+ reg = <0x1b>;
+ status = "okay";
+ };
+ };
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/hifiberry-dac-overlay.dts
@@ -0,0 +1,34 @@
+// Definitions for HiFiBerry DAC
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2708";
+
+ fragment@0 {
+ target = <&sound>;
+ __overlay__ {
+ compatible = "hifiberry,hifiberry-dac";
+ i2s-controller = <&i2s>;
+ status = "okay";
+ };
+ };
+
+ fragment@1 {
+ target = <&i2s>;
+ __overlay__ {
+ status = "okay";
+ };
+ };
+
+ fragment@2 {
+ target-path = "/";
+ __overlay__ {
+ pcm5102a-codec {
+ #sound-dai-cells = <0>;
+ compatible = "ti,pcm5102a";
+ status = "okay";
+ };
+ };
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/hifiberry-dacplus-overlay.dts
@@ -0,0 +1,39 @@
+// Definitions for HiFiBerry DAC+
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2708";
+
+ fragment@0 {
+ target = <&sound>;
+ __overlay__ {
+ compatible = "hifiberry,hifiberry-dacplus";
+ i2s-controller = <&i2s>;
+ status = "okay";
+ };
+ };
+
+ fragment@1 {
+ target = <&i2s>;
+ __overlay__ {
+ status = "okay";
+ };
+ };
+
+ fragment@2 {
+ target = <&i2c1>;
+ __overlay__ {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ pcm5122@4d {
+ #sound-dai-cells = <0>;
+ compatible = "ti,pcm5122";
+ reg = <0x4d>;
+ status = "okay";
+ };
+ };
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/hifiberry-digi-overlay.dts
@@ -0,0 +1,39 @@
+// Definitions for HiFiBerry Digi
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2708";
+
+ fragment@0 {
+ target = <&sound>;
+ __overlay__ {
+ compatible = "hifiberry,hifiberry-digi";
+ i2s-controller = <&i2s>;
+ status = "okay";
+ };
+ };
+
+ fragment@1 {
+ target = <&i2s>;
+ __overlay__ {
+ status = "okay";
+ };
+ };
+
+ fragment@2 {
+ target = <&i2c1>;
+ __overlay__ {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ wm8804@3b {
+ #sound-dai-cells = <0>;
+ compatible = "wlf,wm8804";
+ reg = <0x3b>;
+ status = "okay";
+ };
+ };
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/hy28a-overlay.dts
@@ -0,0 +1,87 @@
+/*
+ * Device Tree overlay for HY28A display
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+ fragment@0 {
+ target = <&spi0>;
+ __overlay__ {
+ status = "okay";
+
+ spidev@0{
+ status = "disabled";
+ };
+
+ spidev@1{
+ status = "disabled";
+ };
+ };
+ };
+
+ fragment@1 {
+ target = <&gpio>;
+ __overlay__ {
+ hy28a_pins: hy28a_pins {
+ brcm,pins = <17 25 18>;
+ brcm,function = <0 1 1>; /* in out out */
+ };
+ };
+ };
+
+ fragment@2 {
+ target = <&spi0>;
+ __overlay__ {
+ /* needed to avoid dtc warning */
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ hy28a: hy28a@0{
+ compatible = "ilitek,ili9320";
+ reg = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&hy28a_pins>;
+
+ spi-max-frequency = <32000000>;
+ spi-cpol;
+ spi-cpha;
+ rotate = <270>;
+ bgr;
+ fps = <50>;
+ buswidth = <8>;
+ startbyte = <0x70>;
+ reset-gpios = <&gpio 25 0>;
+ led-gpios = <&gpio 18 1>;
+ debug = <0>;
+ };
+
+ hy28a_ts: hy28a-ts@1 {
+ compatible = "ti,ads7846";
+ reg = <1>;
+
+ spi-max-frequency = <2000000>;
+ interrupts = <17 2>; /* high-to-low edge triggered */
+ interrupt-parent = <&gpio>;
+ pendown-gpio = <&gpio 17 0>;
+ ti,x-plate-ohms = /bits/ 16 <100>;
+ ti,pressure-max = /bits/ 16 <255>;
+ };
+ };
+ };
+ __overrides__ {
+ speed = <&hy28a>,"spi-max-frequency:0";
+ rotate = <&hy28a>,"rotate:0";
+ fps = <&hy28a>,"fps:0";
+ debug = <&hy28a>,"debug:0";
+ xohms = <&hy28a_ts>,"ti,x-plate-ohms;0";
+ resetgpio = <&hy28a>,"reset-gpios:4",
+ <&hy28a_pins>, "brcm,pins:1";
+ ledgpio = <&hy28a>,"led-gpios:4",
+ <&hy28a_pins>, "brcm,pins:2";
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/hy28b-overlay.dts
@@ -0,0 +1,142 @@
+/*
+ * Device Tree overlay for HY28b display shield by Texy
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+ fragment@0 {
+ target = <&spi0>;
+ __overlay__ {
+ status = "okay";
+
+ spidev@0{
+ status = "disabled";
+ };
+
+ spidev@1{
+ status = "disabled";
+ };
+ };
+ };
+
+ fragment@1 {
+ target = <&gpio>;
+ __overlay__ {
+ hy28b_pins: hy28b_pins {
+ brcm,pins = <17 25 18>;
+ brcm,function = <0 1 1>; /* in out out */
+ };
+ };
+ };
+
+ fragment@2 {
+ target = <&spi0>;
+ __overlay__ {
+ /* needed to avoid dtc warning */
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ hy28b: hy28b@0{
+ compatible = "ilitek,ili9325";
+ reg = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&hy28b_pins>;
+
+ spi-max-frequency = <48000000>;
+ spi-cpol;
+ spi-cpha;
+ rotate = <270>;
+ bgr;
+ fps = <50>;
+ buswidth = <8>;
+ startbyte = <0x70>;
+ reset-gpios = <&gpio 25 0>;
+ led-gpios = <&gpio 18 1>;
+
+ gamma = "04 1F 4 7 7 0 7 7 6 0\n0F 00 1 7 4 0 0 0 6 7";
+
+ init = <0x10000e7 0x0010
+ 0x1000000 0x0001
+ 0x1000001 0x0100
+ 0x1000002 0x0700
+ 0x1000003 0x1030
+ 0x1000004 0x0000
+ 0x1000008 0x0207
+ 0x1000009 0x0000
+ 0x100000a 0x0000
+ 0x100000c 0x0001
+ 0x100000d 0x0000
+ 0x100000f 0x0000
+ 0x1000010 0x0000
+ 0x1000011 0x0007
+ 0x1000012 0x0000
+ 0x1000013 0x0000
+ 0x2000032
+ 0x1000010 0x1590
+ 0x1000011 0x0227
+ 0x2000032
+ 0x1000012 0x009c
+ 0x2000032
+ 0x1000013 0x1900
+ 0x1000029 0x0023
+ 0x100002b 0x000e
+ 0x2000032
+ 0x1000020 0x0000
+ 0x1000021 0x0000
+ 0x2000032
+ 0x1000050 0x0000
+ 0x1000051 0x00ef
+ 0x1000052 0x0000
+ 0x1000053 0x013f
+ 0x1000060 0xa700
+ 0x1000061 0x0001
+ 0x100006a 0x0000
+ 0x1000080 0x0000
+ 0x1000081 0x0000
+ 0x1000082 0x0000
+ 0x1000083 0x0000
+ 0x1000084 0x0000
+ 0x1000085 0x0000
+ 0x1000090 0x0010
+ 0x1000092 0x0000
+ 0x1000093 0x0003
+ 0x1000095 0x0110
+ 0x1000097 0x0000
+ 0x1000098 0x0000
+ 0x1000007 0x0133
+ 0x1000020 0x0000
+ 0x1000021 0x0000
+ 0x2000064>;
+ debug = <0>;
+ };
+
+ hy28b_ts: hy28b-ts@1 {
+ compatible = "ti,ads7846";
+ reg = <1>;
+
+ spi-max-frequency = <2000000>;
+ interrupts = <17 2>; /* high-to-low edge triggered */
+ interrupt-parent = <&gpio>;
+ pendown-gpio = <&gpio 17 0>;
+ ti,x-plate-ohms = /bits/ 16 <100>;
+ ti,pressure-max = /bits/ 16 <255>;
+ };
+ };
+ };
+ __overrides__ {
+ speed = <&hy28b>,"spi-max-frequency:0";
+ rotate = <&hy28b>,"rotate:0";
+ fps = <&hy28b>,"fps:0";
+ debug = <&hy28b>,"debug:0";
+ xohms = <&hy28b_ts>,"ti,x-plate-ohms;0";
+ resetgpio = <&hy28b>,"reset-gpios:4",
+ <&hy28b_pins>, "brcm,pins:1";
+ ledgpio = <&hy28b>,"led-gpios:4",
+ <&hy28b_pins>, "brcm,pins:2";
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts
@@ -0,0 +1,49 @@
+// Definitions for several I2C based Real Time Clocks
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2708";
+
+ fragment@0 {
+ target = <&i2c1>;
+ __overlay__ {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ ds1307: ds1307@68 {
+ compatible = "maxim,ds1307";
+ reg = <0x68>;
+ status = "disable";
+ };
+ ds3231: ds3231@68 {
+ compatible = "maxim,ds3231";
+ reg = <0x68>;
+ status = "disable";
+ };
+ pcf2127: pcf2127@51 {
+ compatible = "nxp,pcf2127";
+ reg = <0x51>;
+ status = "disable";
+ };
+ pcf8523: pcf8523@68 {
+ compatible = "nxp,pcf8523";
+ reg = <0x68>;
+ status = "disable";
+ };
+ pcf8563: pcf8563@51 {
+ compatible = "nxp,pcf8563";
+ reg = <0x51>;
+ status = "disable";
+ };
+ };
+ };
+ __overrides__ {
+ ds1307 = <&ds1307>,"status";
+ ds3231 = <&ds3231>,"status";
+ pcf2127 = <&pcf2127>,"status";
+ pcf8523 = <&pcf8523>,"status";
+ pcf8563 = <&pcf8563>,"status";
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/i2s-mmap-overlay.dts
@@ -0,0 +1,13 @@
+/dts-v1/;
+/plugin/;
+
+/{
+ compatible = "brcm,bcm2708";
+
+ fragment@0 {
+ target = <&i2s>;
+ __overlay__ {
+ brcm,enable-mmap;
+ };
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/iqaudio-dac-overlay.dts
@@ -0,0 +1,39 @@
+// Definitions for IQaudIO DAC
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2708";
+
+ fragment@0 {
+ target = <&sound>;
+ __overlay__ {
+ compatible = "iqaudio,iqaudio-dac";
+ i2s-controller = <&i2s>;
+ status = "okay";
+ };
+ };
+
+ fragment@1 {
+ target = <&i2s>;
+ __overlay__ {
+ status = "okay";
+ };
+ };
+
+ fragment@2 {
+ target = <&i2c1>;
+ __overlay__ {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ pcm5122@4c {
+ #sound-dai-cells = <0>;
+ compatible = "ti,pcm5122";
+ reg = <0x4c>;
+ status = "okay";
+ };
+ };
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/iqaudio-dacplus-overlay.dts
@@ -0,0 +1,39 @@
+// Definitions for IQaudIO DAC+
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2708";
+
+ fragment@0 {
+ target = <&sound>;
+ __overlay__ {
+ compatible = "iqaudio,iqaudio-dac";
+ i2s-controller = <&i2s>;
+ status = "okay";
+ };
+ };
+
+ fragment@1 {
+ target = <&i2s>;
+ __overlay__ {
+ status = "okay";
+ };
+ };
+
+ fragment@2 {
+ target = <&i2c1>;
+ __overlay__ {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ pcm5122@4c {
+ #sound-dai-cells = <0>;
+ compatible = "ti,pcm5122";
+ reg = <0x4c>;
+ status = "okay";
+ };
+ };
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/lirc-rpi-overlay.dts
@@ -0,0 +1,57 @@
+// Definitions for lirc-rpi module
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2708";
+
+ fragment@0 {
+ target-path = "/";
+ __overlay__ {
+ lirc_rpi: lirc_rpi {
+ compatible = "rpi,lirc-rpi";
+ pinctrl-names = "default";
+ pinctrl-0 = <&lirc_pins>;
+ status = "okay";
+
+ // Override autodetection of IR receiver circuit
+ // (0 = active high, 1 = active low, -1 = no override )
+ rpi,sense = <0xffffffff>;
+
+ // Software carrier
+ // (0 = off, 1 = on)
+ rpi,softcarrier = <1>;
+
+ // Invert output
+ // (0 = off, 1 = on)
+ rpi,invert = <0>;
+
+ // Enable debugging messages
+ // (0 = off, 1 = on)
+ rpi,debug = <0>;
+ };
+ };
+ };
+
+ fragment@1 {
+ target = <&gpio>;
+ __overlay__ {
+ lirc_pins: lirc_pins {
+ brcm,pins = <17 18>;
+ brcm,function = <1 0>; // out in
+ brcm,pull = <0 1>; // off down
+ };
+ };
+ };
+
+ __overrides__ {
+ gpio_out_pin = <&lirc_pins>,"brcm,pins:0";
+ gpio_in_pin = <&lirc_pins>,"brcm,pins:4";
+ gpio_in_pull = <&lirc_pins>,"brcm,pull:4";
+
+ sense = <&lirc_rpi>,"rpi,sense:0";
+ softcarrier = <&lirc_rpi>,"rpi,softcarrier:0";
+ invert = <&lirc_rpi>,"rpi,invert:0";
+ debug = <&lirc_rpi>,"rpi,debug:0";
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/mcp2515-can0-overlay.dts
@@ -0,0 +1,69 @@
+/*
+ * Device tree overlay for mcp251x/can0 on spi0.0
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2835", "brcm,bcm2836", "brcm,bcm2708", "brcm,bcm2709";
+ /* disable spi-dev for spi0.0 */
+ fragment@0 {
+ target = <&spi0>;
+ __overlay__ {
+ status = "okay";
+ spidev@0{
+ status = "disabled";
+ };
+ };
+ };
+
+ /* the interrupt pin of the can-controller */
+ fragment@1 {
+ target = <&gpio>;
+ __overlay__ {
+ can0_pins: can0_pins {
+ brcm,pins = <25>;
+ brcm,function = <0>; /* input */
+ };
+ };
+ };
+
+ /* the clock/oscillator of the can-controller */
+ fragment@2 {
+ target-path = "/clocks";
+ __overlay__ {
+ /* external oscillator of mcp2515 on SPI0.0 */
+ can0_osc: can0_osc {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <16000000>;
+ };
+ };
+ };
+
+ /* the spi config of the can-controller itself binding everything together */
+ fragment@3 {
+ target = <&spi0>;
+ __overlay__ {
+ /* needed to avoid dtc warning */
+ #address-cells = <1>;
+ #size-cells = <0>;
+ can0: mcp2515@0 {
+ reg = <0>;
+ compatible = "microchip,mcp2515";
+ pinctrl-names = "default";
+ pinctrl-0 = <&can0_pins>;
+ spi-max-frequency = <10000000>;
+ interrupt-parent = <&gpio>;
+ interrupts = <25 0x2>;
+ clocks = <&can0_osc>;
+ };
+ };
+ };
+ __overrides__ {
+ oscillator = <&can0_osc>,"clock-frequency:0";
+ spimaxfrequency = <&can0>,"spi-max-frequency:0";
+ interrupt = <&can0_pins>,"brcm,pins:0",<&can0>,"interrupts:0";
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/mmc-overlay.dts
@@ -0,0 +1,19 @@
+/dts-v1/;
+/plugin/;
+
+/{
+ compatible = "brcm,bcm2708";
+
+ fragment@0 {
+ target = <&mmc>;
+
+ __overlay__ {
+ brcm,overclock-50 = <0>;
+ };
+ };
+
+ __overrides__ {
+ overclock_50 = <&mmc>,"brcm,overclock-50:0";
+ force_pio = <&mmc>,"brcm,force-pio?";
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/mz61581-overlay.dts
@@ -0,0 +1,109 @@
+/*
+ * Device Tree overlay for MZ61581-PI-EXT 2014.12.28 by Tontec
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+ fragment@0 {
+ target = <&spi0>;
+ __overlay__ {
+ status = "okay";
+
+ spidev@0{
+ status = "disabled";
+ };
+
+ spidev@1{
+ status = "disabled";
+ };
+ };
+ };
+
+ fragment@1 {
+ target = <&gpio>;
+ __overlay__ {
+ mz61581_pins: mz61581_pins {
+ brcm,pins = <4 15 18 25>;
+ brcm,function = <0 1 1 1>; /* in out out out */
+ };
+ };
+ };
+
+ fragment@2 {
+ target = <&spi0>;
+ __overlay__ {
+ /* needed to avoid dtc warning */
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ mz61581: mz61581@0{
+ compatible = "samsung,s6d02a1";
+ reg = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&mz61581_pins>;
+
+ spi-max-frequency = <128000000>;
+ spi-cpol;
+ spi-cpha;
+
+ width = <320>;
+ height = <480>;
+ rotate = <270>;
+ bgr;
+ fps = <30>;
+ buswidth = <8>;
+
+ reset-gpios = <&gpio 15 0>;
+ dc-gpios = <&gpio 25 0>;
+ led-gpios = <&gpio 18 0>;
+
+ init = <0x10000b0 00
+ 0x1000011
+ 0x20000ff
+ 0x10000b3 0x02 0x00 0x00 0x00
+ 0x10000c0 0x13 0x3b 0x00 0x02 0x00 0x01 0x00 0x43
+ 0x10000c1 0x08 0x16 0x08 0x08
+ 0x10000c4 0x11 0x07 0x03 0x03
+ 0x10000c6 0x00
+ 0x10000c8 0x03 0x03 0x13 0x5c 0x03 0x07 0x14 0x08 0x00 0x21 0x08 0x14 0x07 0x53 0x0c 0x13 0x03 0x03 0x21 0x00
+ 0x1000035 0x00
+ 0x1000036 0xa0
+ 0x100003a 0x55
+ 0x1000044 0x00 0x01
+ 0x10000d0 0x07 0x07 0x1d 0x03
+ 0x10000d1 0x03 0x30 0x10
+ 0x10000d2 0x03 0x14 0x04
+ 0x1000029
+ 0x100002c>;
+
+ /* This is a workaround to make sure the init sequence slows down and doesn't fail */
+ debug = <3>;
+ };
+
+ mz61581_ts: mz61581_ts@1 {
+ compatible = "ti,ads7846";
+ reg = <1>;
+
+ spi-max-frequency = <2000000>;
+ interrupts = <4 2>; /* high-to-low edge triggered */
+ interrupt-parent = <&gpio>;
+ pendown-gpio = <&gpio 4 0>;
+
+ ti,x-plate-ohms = /bits/ 16 <60>;
+ ti,pressure-max = /bits/ 16 <255>;
+ };
+ };
+ };
+ __overrides__ {
+ speed = <&mz61581>, "spi-max-frequency:0";
+ rotate = <&mz61581>, "rotate:0";
+ fps = <&mz61581>, "fps:0";
+ debug = <&mz61581>, "debug:0";
+ xohms = <&mz61581_ts>,"ti,x-plate-ohms;0";
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/piscreen-overlay.dts
@@ -0,0 +1,96 @@
+/*
+ * Device Tree overlay for PiScreen 3.5" display shield by Ozzmaker
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+ fragment@0 {
+ target = <&spi0>;
+ __overlay__ {
+ status = "okay";
+
+ spidev@0{
+ status = "disabled";
+ };
+
+ spidev@1{
+ status = "disabled";
+ };
+ };
+ };
+
+ fragment@1 {
+ target = <&gpio>;
+ __overlay__ {
+ piscreen_pins: piscreen_pins {
+ brcm,pins = <17 25 24 22>;
+ brcm,function = <0 1 1 1>; /* in out out out */
+ };
+ };
+ };
+
+ fragment@2 {
+ target = <&spi0>;
+ __overlay__ {
+ /* needed to avoid dtc warning */
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ piscreen: piscreen@0{
+ compatible = "ilitek,ili9486";
+ reg = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&piscreen_pins>;
+
+ spi-max-frequency = <24000000>;
+ rotate = <270>;
+ bgr;
+ fps = <30>;
+ buswidth = <8>;
+ regwidth = <16>;
+ reset-gpios = <&gpio 25 0>;
+ dc-gpios = <&gpio 24 0>;
+ led-gpios = <&gpio 22 1>;
+ debug = <0>;
+
+ init = <0x10000b0 0x00
+ 0x1000011
+ 0x20000ff
+ 0x100003a 0x55
+ 0x1000036 0x28
+ 0x10000c2 0x44
+ 0x10000c5 0x00 0x00 0x00 0x00
+ 0x10000e0 0x0f 0x1f 0x1c 0x0c 0x0f 0x08 0x48 0x98 0x37 0x0a 0x13 0x04 0x11 0x0d 0x00
+ 0x10000e1 0x0f 0x32 0x2e 0x0b 0x0d 0x05 0x47 0x75 0x37 0x06 0x10 0x03 0x24 0x20 0x00
+ 0x10000e2 0x0f 0x32 0x2e 0x0b 0x0d 0x05 0x47 0x75 0x37 0x06 0x10 0x03 0x24 0x20 0x00
+ 0x1000011
+ 0x1000029>;
+ };
+
+ piscreen_ts: piscreen-ts@1 {
+ compatible = "ti,ads7846";
+ reg = <1>;
+
+ spi-max-frequency = <2000000>;
+ interrupts = <17 2>; /* high-to-low edge triggered */
+ interrupt-parent = <&gpio>;
+ pendown-gpio = <&gpio 17 0>;
+ ti,swap-xy;
+ ti,x-plate-ohms = /bits/ 16 <100>;
+ ti,pressure-max = /bits/ 16 <255>;
+ };
+ };
+ };
+ __overrides__ {
+ speed = <&piscreen>,"spi-max-frequency:0";
+ rotate = <&piscreen>,"rotate:0";
+ fps = <&piscreen>,"fps:0";
+ debug = <&piscreen>,"debug:0";
+ xohms = <&piscreen_ts>,"ti,x-plate-ohms;0";
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/pitft28-resistive-overlay.dts
@@ -0,0 +1,115 @@
+/*
+ * Device Tree overlay for Adafruit PiTFT 2.8" resistive touch screen
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+ fragment@0 {
+ target = <&spi0>;
+ __overlay__ {
+ status = "okay";
+
+ spidev@0{
+ status = "disabled";
+ };
+
+ spidev@1{
+ status = "disabled";
+ };
+ };
+ };
+
+ fragment@1 {
+ target = <&gpio>;
+ __overlay__ {
+ pitft_pins: pitft_pins {
+ brcm,pins = <24 25>;
+ brcm,function = <0 1>; /* in out */
+ brcm,pull = <2 0>; /* pullup none */
+ };
+ };
+ };
+
+ fragment@2 {
+ target = <&spi0>;
+ __overlay__ {
+ /* needed to avoid dtc warning */
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ pitft: pitft@0{
+ compatible = "ilitek,ili9340";
+ reg = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pitft_pins>;
+
+ spi-max-frequency = <32000000>;
+ rotate = <90>;
+ fps = <25>;
+ bgr;
+ buswidth = <8>;
+ dc-gpios = <&gpio 25 0>;
+ debug = <0>;
+ };
+
+ pitft_ts@1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "st,stmpe610";
+ reg = <1>;
+
+ spi-max-frequency = <500000>;
+ irq-gpio = <&gpio 24 0x2>; /* IRQF_TRIGGER_FALLING */
+ interrupts = <24 2>; /* high-to-low edge triggered */
+ interrupt-parent = <&gpio>;
+ interrupt-controller;
+
+ stmpe_touchscreen {
+ compatible = "st,stmpe-ts";
+ st,sample-time = <4>;
+ st,mod-12b = <1>;
+ st,ref-sel = <0>;
+ st,adc-freq = <2>;
+ st,ave-ctrl = <3>;
+ st,touch-det-delay = <4>;
+ st,settling = <2>;
+ st,fraction-z = <7>;
+ st,i-drive = <0>;
+ };
+
+ stmpe_gpio: stmpe_gpio {
+ #gpio-cells = <2>;
+ compatible = "st,stmpe-gpio";
+ /*
+ * only GPIO2 is wired/available
+ * and it is wired to the backlight
+ */
+ st,norequest-mask = <0x7b>;
+ };
+ };
+ };
+ };
+
+ fragment@3 {
+ target-path = "/soc";
+ __overlay__ {
+ backlight {
+ compatible = "gpio-backlight";
+ gpios = <&stmpe_gpio 2 0>;
+ default-on;
+ };
+ };
+ };
+
+ __overrides__ {
+ speed = <&pitft>,"spi-max-frequency:0";
+ rotate = <&pitft>,"rotate:0";
+ fps = <&pitft>,"fps:0";
+ debug = <&pitft>,"debug:0";
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/pps-gpio-overlay.dts
@@ -0,0 +1,34 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2708";
+ fragment@0 {
+ target-path = "/";
+ __overlay__ {
+ pps: pps {
+ compatible = "pps-gpio";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pps_pins>;
+ gpios = <&gpio 18 0>;
+ status = "okay";
+ };
+ };
+ };
+
+ fragment@1 {
+ target = <&gpio>;
+ __overlay__ {
+ pps_pins: pps_pins {
+ brcm,pins = <18>;
+ brcm,function = <0>; // in
+ brcm,pull = <0>; // off
+ };
+ };
+ };
+
+ __overrides__ {
+ gpiopin = <&pps>,"gpios:4",
+ <&pps_pins>,"brcm,pins:0";
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/rpi-dac-overlay.dts
@@ -0,0 +1,34 @@
+// Definitions for RPi DAC
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2708";
+
+ fragment@0 {
+ target = <&sound>;
+ __overlay__ {
+ compatible = "rpi,rpi-dac";
+ i2s-controller = <&i2s>;
+ status = "okay";
+ };
+ };
+
+ fragment@1 {
+ target = <&i2s>;
+ __overlay__ {
+ status = "okay";
+ };
+ };
+
+ fragment@2 {
+ target-path = "/";
+ __overlay__ {
+ pcm1794a-codec {
+ #sound-dai-cells = <0>;
+ compatible = "ti,pcm1794a";
+ status = "okay";
+ };
+ };
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/rpi-display-overlay.dts
@@ -0,0 +1,82 @@
+/*
+ * Device Tree overlay for rpi-display by Watterott
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+ fragment@0 {
+ target = <&spi0>;
+ __overlay__ {
+ status = "okay";
+
+ spidev@0{
+ status = "disabled";
+ };
+
+ spidev@1{
+ status = "disabled";
+ };
+ };
+ };
+
+ fragment@1 {
+ target = <&gpio>;
+ __overlay__ {
+ rpi_display_pins: rpi_display_pins {
+ brcm,pins = <18 23 24 25>;
+ brcm,function = <1 1 1 0>; /* out out out in */
+ brcm,pull = <0 0 0 2>; /* - - - up */
+ };
+ };
+ };
+
+ fragment@2 {
+ target = <&spi0>;
+ __overlay__ {
+ /* needed to avoid dtc warning */
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ rpidisplay: rpi-display@0{
+ compatible = "ilitek,ili9341";
+ reg = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&rpi_display_pins>;
+
+ spi-max-frequency = <32000000>;
+ rotate = <270>;
+ bgr;
+ fps = <30>;
+ buswidth = <8>;
+ reset-gpios = <&gpio 23 0>;
+ dc-gpios = <&gpio 24 0>;
+ led-gpios = <&gpio 18 1>;
+ debug = <0>;
+ };
+
+ rpidisplay_ts: rpi-display-ts@1 {
+ compatible = "ti,ads7846";
+ reg = <1>;
+
+ spi-max-frequency = <2000000>;
+ interrupts = <25 2>; /* high-to-low edge triggered */
+ interrupt-parent = <&gpio>;
+ pendown-gpio = <&gpio 25 0>;
+ ti,x-plate-ohms = /bits/ 16 <60>;
+ ti,pressure-max = /bits/ 16 <255>;
+ };
+ };
+ };
+ __overrides__ {
+ speed = <&rpidisplay>,"spi-max-frequency:0";
+ rotate = <&rpidisplay>,"rotate:0";
+ fps = <&rpidisplay>,"fps:0";
+ debug = <&rpidisplay>,"debug:0";
+ xohms = <&rpidisplay_ts>,"ti,x-plate-ohms;0";
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/rpi-proto-overlay.dts
@@ -0,0 +1,39 @@
+// Definitions for Rpi-Proto
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2708";
+
+ fragment@0 {
+ target = <&sound>;
+ __overlay__ {
+ compatible = "rpi,rpi-proto";
+ i2s-controller = <&i2s>;
+ status = "okay";
+ };
+ };
+
+ fragment@1 {
+ target = <&i2s>;
+ __overlay__ {
+ status = "okay";
+ };
+ };
+
+ fragment@2 {
+ target = <&i2c1>;
+ __overlay__ {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ wm8731@1a {
+ #sound-dai-cells = <0>;
+ compatible = "wlf,wm8731";
+ reg = <0x1a>;
+ status = "okay";
+ };
+ };
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/sdhost-overlay.dts
@@ -0,0 +1,78 @@
+/dts-v1/;
+/plugin/;
+
+/{
+ compatible = "brcm,bcm2708";
+
+ fragment@0 {
+ target = <&soc>;
+ __overlay__ {
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ sdhost: sdhost@7e202000 {
+ compatible = "brcm,bcm2835-sdhost";
+ reg = <0x7e202000 0x100>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&sdhost_pins>;
+ interrupts = <2 24>;
+ clocks = <&clk_sdhost>;
+ dmas = <&dma 13>,
+ <&dma 13>;
+ dma-names = "tx", "rx";
+ brcm,delay-after-stop = <0>;
+ brcm,overclock-50 = <0>;
+ status = "okay";
+ };
+ };
+ };
+
+ fragment@1 {
+ target = <&clocks>;
+ __overlay__ {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ clk_sdhost: sdhost {
+ compatible = "fixed-clock";
+ reg = <0>;
+ #clock-cells = <0>;
+ clock-output-names = "sdhost";
+ clock-frequency = <250000000>;
+ };
+ };
+ };
+
+ fragment@2 {
+ target = <&gpio>;
+ __overlay__ {
+ sdhost_pins: sdhost_pins {
+ brcm,pins = <48 49 50 51 52 53>;
+ brcm,function = <4>; /* alt0 */
+ };
+ };
+ };
+
+ fragment@3 {
+ target = <&mmc>;
+ __overlay__ {
+ /* Find a way to disable the other driver */
+ compatible = "";
+ status = "disabled";
+ };
+ };
+
+ fragment@4 {
+ target-path = "/__overrides__";
+ __overlay__ {
+ sdhost_freq = <&clk_sdhost>,"clock-frequency:0";
+ };
+ };
+
+ __overrides__ {
+ delay_after_stop = <&sdhost>,"brcm,delay-after-stop:0";
+ overclock_50 = <&sdhost>,"brcm,overclock-50:0";
+ force_pio = <&sdhost>,"brcm,force-pio?";
+ sdhost_freq = <&clk_sdhost>,"clock-frequency:0";
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/spi-bcm2708-overlay.dts
@@ -0,0 +1,18 @@
+/*
+ * Device tree overlay for spi-bcm2835
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2835", "brcm,bcm2836", "brcm,bcm2708", "brcm,bcm2709";
+ /* setting up compatiblity to allow loading the spi-bcm2835 driver */
+ fragment@0 {
+ target = <&spi0>;
+ __overlay__ {
+ status = "okay";
+ compatible = "brcm,bcm2708-spi";
+ };
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/spi-bcm2835-overlay.dts
@@ -0,0 +1,18 @@
+/*
+ * Device tree overlay for spi-bcm2835
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2835", "brcm,bcm2836", "brcm,bcm2708", "brcm,bcm2709";
+ /* setting up compatiblity to allow loading the spi-bcm2835 driver */
+ fragment@0 {
+ target = <&spi0>;
+ __overlay__ {
+ status = "okay";
+ compatible = "brcm,bcm2835-spi";
+ };
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/tinylcd35-overlay.dts
@@ -0,0 +1,216 @@
+/*
+ * tinylcd35-overlay.dts
+ *
+ * -------------------------------------------------
+ * www.tinlylcd.com
+ * -------------------------------------------------
+ * Device---Driver-----BUS GPIO's
+ * display tinylcd35 spi0.0 25 24 18
+ * touch ads7846 spi0.1 5
+ * rtc ds1307 i2c1-0068
+ * rtc pcf8563 i2c1-0051
+ * keypad gpio-keys --------- 17 22 27 23 28
+ *
+ *
+ * TinyLCD.com 3.5 inch TFT
+ *
+ * Version 001
+ * 5/3/2015 -- Noralf Trønnes Initial Device tree framework
+ * 10/3/2015 -- tinylcd@gmail.com added ds1307 support.
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+ fragment@0 {
+ target = <&spi0>;
+ __overlay__ {
+ status = "okay";
+
+ spidev@0{
+ status = "disabled";
+ };
+
+ spidev@1{
+ status = "disabled";
+ };
+ };
+ };
+
+ fragment@1 {
+ target = <&gpio>;
+ __overlay__ {
+ tinylcd35_pins: tinylcd35_pins {
+ brcm,pins = <25 24 18>;
+ brcm,function = <1>; /* out */
+ };
+ tinylcd35_ts_pins: tinylcd35_ts_pins {
+ brcm,pins = <5>;
+ brcm,function = <0>; /* in */
+ };
+ keypad_pins: keypad_pins {
+ brcm,pins = <4 17 22 23 27>;
+ brcm,function = <0>; /* in */
+ brcm,pull = <1>; /* down */
+ };
+ };
+ };
+
+ fragment@2 {
+ target = <&spi0>;
+ __overlay__ {
+ /* needed to avoid dtc warning */
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ tinylcd35: tinylcd35@0{
+ compatible = "neosec,tinylcd";
+ reg = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&tinylcd35_pins>,
+ <&tinylcd35_ts_pins>;
+
+ spi-max-frequency = <48000000>;
+ rotate = <270>;
+ fps = <20>;
+ bgr;
+ buswidth = <8>;
+ reset-gpios = <&gpio 25 0>;
+ dc-gpios = <&gpio 24 0>;
+ led-gpios = <&gpio 18 1>;
+ debug = <0>;
+
+ init = <0x10000B0 0x80
+ 0x10000C0 0x0A 0x0A
+ 0x10000C1 0x01 0x01
+ 0x10000C2 0x33
+ 0x10000C5 0x00 0x42 0x80
+ 0x10000B1 0xD0 0x11
+ 0x10000B4 0x02
+ 0x10000B6 0x00 0x22 0x3B
+ 0x10000B7 0x07
+ 0x1000036 0x58
+ 0x10000F0 0x36 0xA5 0xD3
+ 0x10000E5 0x80
+ 0x10000E5 0x01
+ 0x10000B3 0x00
+ 0x10000E5 0x00
+ 0x10000F0 0x36 0xA5 0x53
+ 0x10000E0 0x00 0x35 0x33 0x00 0x00 0x00 0x00 0x35 0x33 0x00 0x00 0x00
+ 0x100003A 0x55
+ 0x1000011
+ 0x2000001
+ 0x1000029>;
+ };
+
+ tinylcd35_ts: tinylcd35_ts@1 {
+ compatible = "ti,ads7846";
+ reg = <1>;
+ status = "disabled";
+
+ spi-max-frequency = <2000000>;
+ interrupts = <5 2>; /* high-to-low edge triggered */
+ interrupt-parent = <&gpio>;
+ pendown-gpio = <&gpio 5 0>;
+ ti,x-plate-ohms = /bits/ 16 <100>;
+ ti,pressure-max = /bits/ 16 <255>;
+ };
+ };
+ };
+
+ /* RTC */
+
+ fragment@3 {
+ target = <&i2c1>;
+ __overlay__ {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ pcf8563: pcf8563@51 {
+ compatible = "nxp,pcf8563";
+ reg = <0x51>;
+ status = "disabled";
+ };
+ };
+ };
+
+ fragment@4 {
+ target = <&i2c1>;
+ __overlay__ {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ ds1307: ds1307@68 {
+ compatible = "maxim,ds1307";
+ reg = <0x68>;
+ status = "disabled";
+ };
+ };
+ };
+
+ /*
+ * Values for input event code is found under the
+ * 'Keys and buttons' heading in include/uapi/linux/input.h
+ */
+ fragment@5 {
+ target-path = "/soc";
+ __overlay__ {
+ keypad: keypad {
+ compatible = "gpio-keys";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&keypad_pins>;
+ status = "disabled";
+ autorepeat;
+
+ button@17 {
+ label = "GPIO KEY_UP";
+ linux,code = <103>;
+ gpios = <&gpio 17 0>;
+ };
+ button@22 {
+ label = "GPIO KEY_DOWN";
+ linux,code = <108>;
+ gpios = <&gpio 22 0>;
+ };
+ button@27 {
+ label = "GPIO KEY_LEFT";
+ linux,code = <105>;
+ gpios = <&gpio 27 0>;
+ };
+ button@23 {
+ label = "GPIO KEY_RIGHT";
+ linux,code = <106>;
+ gpios = <&gpio 23 0>;
+ };
+ button@4 {
+ label = "GPIO KEY_ENTER";
+ linux,code = <28>;
+ gpios = <&gpio 4 0>;
+ };
+ };
+ };
+ };
+
+ __overrides__ {
+ speed = <&tinylcd35>,"spi-max-frequency:0";
+ rotate = <&tinylcd35>,"rotate:0";
+ fps = <&tinylcd35>,"fps:0";
+ debug = <&tinylcd35>,"debug:0";
+ touch = <&tinylcd35_ts>,"status";
+ touchgpio = <&tinylcd35_ts_pins>,"brcm,pins:0",
+ <&tinylcd35_ts>,"interrupts:0",
+ <&tinylcd35_ts>,"pendown-gpio:4";
+ xohms = <&tinylcd35_ts>,"ti,x-plate-ohms;0";
+ rtc-pcf = <&i2c1>,"status",
+ <&pcf8563>,"status";
+ rtc-ds = <&i2c1>,"status",
+ <&ds1307>,"status";
+ keypad = <&keypad>,"status";
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/w1-gpio-overlay.dts
@@ -0,0 +1,39 @@
+// Definitions for w1-gpio module (without external pullup)
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2708";
+
+ fragment@0 {
+ target-path = "/";
+ __overlay__ {
+
+ w1: onewire@0 {
+ compatible = "w1-gpio";
+ pinctrl-names = "default";
+ pinctrl-0 = <&w1_pins>;
+ gpios = <&gpio 4 0>;
+ rpi,parasitic-power = <0>;
+ status = "okay";
+ };
+ };
+ };
+
+ fragment@1 {
+ target = <&gpio>;
+ __overlay__ {
+ w1_pins: w1_pins {
+ brcm,pins = <4>;
+ brcm,function = <0>; // in (initially)
+ brcm,pull = <0>; // off
+ };
+ };
+ };
+
+ __overrides__ {
+ gpiopin = <&w1>,"gpios:4",
+ <&w1_pins>,"brcm,pins:0";
+ pullup = <&w1>,"rpi,parasitic-power:0";
+ };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/w1-gpio-pullup-overlay.dts
@@ -0,0 +1,41 @@
+// Definitions for w1-gpio module (with external pullup)
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2708";
+
+ fragment@0 {
+ target-path = "/";
+ __overlay__ {
+
+ w1: onewire@0 {
+ compatible = "w1-gpio";
+ pinctrl-names = "default";
+ pinctrl-0 = <&w1_pins>;
+ gpios = <&gpio 4 0>, <&gpio 5 1>;
+ rpi,parasitic-power = <0>;
+ status = "okay";
+ };
+ };
+ };
+
+ fragment@1 {
+ target = <&gpio>;
+ __overlay__ {
+ w1_pins: w1_pins {
+ brcm,pins = <4 5>;
+ brcm,function = <0 1>; // in out
+ brcm,pull = <0 0>; // off off
+ };
+ };
+ };
+
+ __overrides__ {
+ gpiopin = <&w1>,"gpios:4",
+ <&w1_pins>,"brcm,pins:0";
+ extpullup = <&w1>,"gpios:16",
+ <&w1_pins>,"brcm,pins:4";
+ pullup = <&w1>,"rpi,parasitic-power:0";
+ };
+};
Reference in a new issue Copy permalink