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openwrtv4/target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4029-mr33.dts
Sven Eckelmann 0d62432834 ipq40xx: Remove unused reserved-memory nodes 
The reserved-memory regions are mostly undocumented by QCA and are named
very unspecific in the QSDK device trees. It was tried to clean them up by
commit 71ed9f10a3 ("ipq40xx: Use detailed reserved memory for A42") and
similar changes.

The features which require these regions were mostly unknown but
Senthilkumar N L <snlakshm@qti.qualcomm.com> and Sricharan Ramabadhran
<srichara@qti.qualcomm.com> provided some more insight in some of them:

* crash dump feature
  - a couple of regions used when 'qca,scm_restart_reason' dt node has the
    value 'dload_status' not set to 1
    + apps_bl <0x87000000 0x400000>
    + sbl <0x87400000 0x100000>
    + cnss_debug <0x87400000 0x100000>
    + cpu_context_dump <0x87b00000 0x080000>
  - required driver not available in Linux
  - safe to remove
* QSEE app execution
  - region tz_apps <0x87b80000 0x280000>
  - required driver not available in Linux
  - safe to remove
* communication with TZ/QSEE
  - region smem <0x87b80000 0x280000>
  - driver changes not yet upstreamed
  - must not be removed because any access can crash kernel/program
* trustzone (QSEE) private memory
  - region tz <0x87e80000 0x180000>
  - must not be removed because any access can crash kernel/program

Removing the unnecessary regions saves some kilobyte of reserved-memory and
cleans up the device tree:

* 2560 KiB
  - 8devices Jalapeno
  - AVM FRITZ!Box 4040
  - Compex WPJ428
  - Meraki MR33 Access Point
  - OpenMesh A42
* 14336 KiB
  - GL.iNet GL-B1300
  - Qualcomm Technologies, Inc. IPQ40xx/AP-DK01.1-C1

Signed-off-by: Sven Eckelmann <sven.eckelmann@openmesh.com>
2018-04-20 20:58:52 +02:00

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/*
* Device Tree Source for Meraki MR33 (Stinkbug)
*
* Copyright (C) 2017 Chris Blake <chrisrblake93@gmail.com>
* Copyright (C) 2017 Christian Lamparter <chunkeey@googlemail.com>
*
* Based on Cisco Meraki DTS from GPL release r25-linux-3.14-20170427
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without
* any warranty of any kind, whether express or implied.
*/
#include "qcom-ipq4019.dtsi"
#include "qcom-ipq4019-bus.dtsi"
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
#include <dt-bindings/soc/qcom,tcsr.h>
/ {
model = "Meraki MR33 Access Point";
compatible = "meraki,mr33", "qcom,ipq4019";
aliases {
led-boot = &status_green;
led-failsafe = &status_red;
led-running = &status_green;
led-upgrade = &power_orange;
};
/* Do we really need this defined? */
memory {
device_type = "memory";
reg = <0x80000000 0x10000000>;
};
reserved-memory {
#address-cells = <0x1>;
#size-cells = <0x1>;
ranges;
smem@87e00000 {
reg = <0x87e00000 0x080000>;
no-map;
};
tz@87e80000 {
reg = <0x87e80000 0x180000>;
no-map;
};
};
soc {
mdio@90000 {
status = "okay";
pinctrl-0 = <&mdio_pins>;
pinctrl-names = "default";
/delete-node/ ethernet-phy@0;
/delete-node/ ethernet-phy@2;
/delete-node/ ethernet-phy@3;
/delete-node/ ethernet-phy@4;
};
/* It is a 56-bit counter that supplies the count to the ARM arch
timers and without upstream driver */
counter@4a1000 {
compatible = "qcom,qca-gcnt";
reg = <0x4a1000 0x4>;
};
ess_tcsr@1953000 {
compatible = "qcom,tcsr";
reg = <0x1953000 0x1000>;
qcom,ess-interface-select = <TCSR_ESS_PSGMII_RGMII5>;
};
tcsr@1949000 {
compatible = "qcom,tcsr";
reg = <0x1949000 0x100>;
qcom,wifi_glb_cfg = <TCSR_WIFI_GLB_CFG>;
};
tcsr@1957000 {
compatible = "qcom,tcsr";
reg = <0x1957000 0x100>;
qcom,wifi_noc_memtype_m0_m2 = <TCSR_WIFI_NOC_MEMTYPE_M0_M2>;
};
serial@78af000 {
pinctrl-0 = <&serial_0_pins>;
pinctrl-names = "default";
status = "okay";
};
serial@78b0000 {
pinctrl-0 = <&serial_1_pins>;
pinctrl-names = "default";
status = "okay";
bluetooth {
compatible = "ti,cc2650";
enable-gpios = <&tlmm 12 GPIO_ACTIVE_LOW>;
};
};
crypto@8e3a000 {
status = "okay";
};
watchdog@b017000 {
status = "okay";
};
ess-switch@c000000 {
switch_mac_mode = <0x3>; /* mac mode for RGMII RMII */
switch_lan_bmp = <0x0>; /* lan port bitmap */
switch_wan_bmp = <0x10>; /* wan port bitmap */
};
edma@c080000 {
qcom,single-phy;
qcom,num_gmac = <1>;
phy-mode = "rgmii-rxid";
status = "okay";
};
};
gpio-keys {
compatible = "gpio-keys";
reset {
label = "reset";
gpios = <&tlmm 18 GPIO_ACTIVE_LOW>;
linux,code = <KEY_RESTART>;
};
};
gpio-leds {
compatible = "gpio-leds";
power_orange: power {
label = "mr33:orange:power";
gpios = <&tlmm 49 GPIO_ACTIVE_LOW>;
panic-indicator;
};
};
};
&blsp_dma {
status = "okay";
};
&cryptobam {
status = "okay";
};
&gmac0 {
qcom,phy_mdio_addr = <1>;
qcom,poll_required = <1>;
vlan_tag = <0 0x20>;
};
&i2c_0 {
pinctrl-0 = <&i2c_0_pins>;
pinctrl-names = "default";
status = "okay";
at24@50 {
compatible = "atmel,24c64";
pagesize = <32>;
reg = <0x50>;
read-only; /* This holds our MAC & Meraki board-data */
};
};
&i2c_1 {
pinctrl-0 = <&i2c_1_pins>;
pinctrl-names = "default";
status = "okay";
lp5562@30 {
enable-gpio = <&tlmm 48 GPIO_ACTIVE_HIGH>;
compatible = "ti,lp5562";
clock-mode = /bits/8 <2>;
reg = <0x30>;
/* RGB led */
status_red: chan0 {
chan-name = "mr33:red:status";
led-cur = /bits/ 8 <0x20>;
max-cur = /bits/ 8 <0x60>;
};
status_green: chan1 {
chan-name = "mr33:green:status";
led-cur = /bits/ 8 <0x20>;
max-cur = /bits/ 8 <0x60>;
};
chan2 {
chan-name = "mr33:blue:status";
led-cur = /bits/ 8 <0x20>;
max-cur = /bits/ 8 <0x60>;
};
chan3 {
chan-name = "mr33:white:status";
led-cur = /bits/ 8 <0x20>;
max-cur = /bits/ 8 <0x60>;
};
};
};
&nand {
pinctrl-0 = <&nand_pins>;
pinctrl-names = "default";
status = "okay";
nand@0 {
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;
partition@0 {
label = "sbl1";
reg = <0x000000000000 0x000000100000>;
read-only;
};
partition@1 {
label = "mibib";
reg = <0x000000100000 0x000000100000>;
read-only;
};
partition@2 {
label = "bootconfig";
reg = <0x000000200000 0x000000100000>;
read-only;
};
partition@3 {
label = "qsee";
reg = <0x000000300000 0x000000100000>;
read-only;
};
partition@4 {
label = "qsee_alt";
reg = <0x000000400000 0x000000100000>;
read-only;
};
partition@5 {
label = "cdt";
reg = <0x000000500000 0x000000080000>;
read-only;
};
partition@6 {
label = "cdt_alt";
reg = <0x000000580000 0x000000080000>;
read-only;
};
partition@7 {
label = "ddrparams";
reg = <0x000000600000 0x000000080000>;
read-only;
};
partition@8 {
label = "u-boot";
reg = <0x000000700000 0x000000200000>;
read-only;
};
partition@9 {
label = "u-boot-backup";
reg = <0x000000900000 0x000000200000>;
read-only;
};
partition@10 {
label = "ART";
reg = <0x000000b00000 0x000000080000>;
read-only;
};
partition@11 {
label = "ubi";
reg = <0x000000c00000 0x000007000000>;
};
};
};
};
&pcie0 {
status = "okay";
perst-gpio = <&tlmm 38 GPIO_ACTIVE_LOW>;
wake-gpio = <&tlmm 50 GPIO_ACTIVE_LOW>;
};
&qpic_bam {
status = "okay";
};
&tlmm {
/*
* GPIO43 should be 0/1 whenever the unit is
* powered through PoE or AC-Adapter.
* That said, playing with this seems to
* reset the AP.
*/
mdio_pins: mdio_pinmux {
mux_1 {
pins = "gpio6";
function = "mdio";
bias-pull-up;
};
mux_2 {
pins = "gpio7";
function = "mdc";
bias-pull-up;
};
};
serial_0_pins: serial_pinmux {
mux {
pins = "gpio16", "gpio17";
function = "blsp_uart0";
bias-disable;
};
};
serial_1_pins: serial1_pinmux {
mux {
/* We use the i2c-0 pins for serial_1 */
pins = "gpio8", "gpio9";
function = "blsp_uart1";
bias-disable;
};
};
i2c_0_pins: i2c_0_pinmux {
pinmux {
function = "blsp_i2c0";
pins = "gpio20", "gpio21";
};
pinconf {
pins = "gpio20", "gpio21";
drive-strength = <16>;
bias-disable;
};
};
i2c_1_pins: i2c_1_pinmux {
pinmux {
function = "blsp_i2c1";
pins = "gpio34", "gpio35";
};
pinconf {
pins = "gpio34", "gpio35";
drive-strength = <16>;
bias-disable;
};
};
nand_pins: nand_pins {
/*
* There are 18 pins. 15 pins are common between LCD and NAND.
* The QPIC controller arbitrates between LCD and NAND. Of the
* remaining 4, 2 are for NAND and 2 are for LCD exclusively.
*
* The meraki source hints that the bluetooth module claims
* pin 52 as well. But sadly, there's no data whenever this
* is a NAND or LCD exclusive pin or not.
*/
pullups {
pins = "gpio52", "gpio53", "gpio58",
"gpio59";
function = "qpic";
bias-pull-up;
};
pulldowns {
pins = "gpio54", "gpio55", "gpio56",
"gpio57", "gpio60", "gpio61",
"gpio62", "gpio63", "gpio64",
"gpio65", "gpio66", "gpio67",
"gpio68", "gpio69";
function = "qpic";
bias-pull-down;
};
};
};
&wifi0 {
status = "okay";
/* qcom,ath10k-calibration-variant = "MERAKI-MR33"; */
};
&wifi1 {
status = "okay";
/* qcom,ath10k-calibration-variant = "MERAKI-MR33"; */
};
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