2016-12-02 10:50:26 +00:00
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From 8f6cc1607cb38e53b0638be389fceaafb48b3f34 Mon Sep 17 00:00:00 2001
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2016-04-24 11:03:39 +00:00
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From: Phil Elwell <phil@raspberrypi.org>
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Date: Tue, 5 Apr 2016 13:01:54 +0100
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2016-09-10 12:54:26 +00:00
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Subject: [PATCH] BCM270X_DT: Add dpi24 overlay
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2016-04-24 11:03:39 +00:00
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Signed-off-by: Phil Elwell <phil@raspberrypi.org>
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---
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arch/arm/boot/dts/overlays/Makefile | 1 +
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arch/arm/boot/dts/overlays/README | 8 +++++++
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arch/arm/boot/dts/overlays/dpi24-overlay.dts | 31 ++++++++++++++++++++++++++++
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3 files changed, 40 insertions(+)
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create mode 100644 arch/arm/boot/dts/overlays/dpi24-overlay.dts
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--- a/arch/arm/boot/dts/overlays/Makefile
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+++ b/arch/arm/boot/dts/overlays/Makefile
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@@ -15,6 +15,7 @@ endif
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dtbo-$(RPI_DT_OVERLAYS) += ads7846.dtbo
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dtbo-$(RPI_DT_OVERLAYS) += at86rf233.dtbo
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dtbo-$(RPI_DT_OVERLAYS) += bmp085_i2c-sensor.dtbo
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+dtbo-$(RPI_DT_OVERLAYS) += dpi24.dtbo
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dtbo-$(RPI_DT_OVERLAYS) += dwc2.dtbo
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dtbo-$(RPI_DT_OVERLAYS) += dwc-otg.dtbo
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dtbo-$(RPI_DT_OVERLAYS) += dht11.dtbo
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--- a/arch/arm/boot/dts/overlays/README
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+++ b/arch/arm/boot/dts/overlays/README
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@@ -213,6 +213,14 @@ Params: gpiopin GPIO con
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(default 4)
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+Name: dpi24
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+Info: Overlay for a generic 24-bit DPI display
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+ This uses GPIOs 0-27 (so no I2C, uart etc.), and activates the output
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+ 2-3 seconds after the kernel has started.
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+Load: dtoverlay=dpi24
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+Params: <None>
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+
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+
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Name: dwc-otg
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Info: Selects the dwc_otg USB controller driver which has fiq support. This
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is the default on all except the Pi Zero which defaults to dwc2.
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--- /dev/null
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+++ b/arch/arm/boot/dts/overlays/dpi24-overlay.dts
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@@ -0,0 +1,31 @@
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+/dts-v1/;
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+/plugin/;
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+
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+/{
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+ compatible = "brcm,bcm2708";
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+
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+ // There is no DPI driver module, but we need a platform device
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+ // node (that doesn't already use pinctrl) to hang the pinctrl
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+ // reference on - leds will do
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+
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+ fragment@0 {
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+ target = <&leds>;
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+ __overlay__ {
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+ pinctrl-names = "default";
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+ pinctrl-0 = <&dpi24_pins>;
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+ };
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+ };
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+
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+ fragment@1 {
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+ target = <&gpio>;
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+ __overlay__ {
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+ dpi24_pins: dpi24_pins {
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+ brcm,pins = <0 1 2 3 4 5 6 7 8 9 10 11
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+ 12 13 14 15 16 17 18 19 20
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+ 21 22 23 24 25 26 27>;
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+ brcm,function = <6>; /* alt2 */
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+ brcm,pull = <0>; /* no pull */
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+ };
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+ };
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+ };
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+};
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