Openwrt/target/linux/apm821xx/dts/meraki-mx60.dts
Christian Lamparter 971f31bedc apm821xx: fix bogus key-presses on boot
"There are often transient line events when
the system is powered up and initialized and it
is often necessary for the gpio_chip driver to
clear any interrupt flags in hardware before
setting up the gpio chip, especially the
irqchip portions of it."
<http://lists.infradead.org/pipermail/openwrt-devel/2019-June/017630.html>

This patch adds a fix for the APM821XX's interrupt
controller to clear any bogus pending toggled
interrupts that happens on various APM821XX boards
on boot.

The patch also changes the debouce-interval from the
default 5ms debounce interval to 60ms all around.
The default setting caused on occasions that the button
state became stuck in a pressed state, even though the
button was released.

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
2019-06-20 19:58:27 +02:00

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/*
* Device Tree Source for Meraki MX60/MX60W (Buckminster)
*
* Copyright (C) 2016 Chris Blake <chrisrblake93@gmail.com>
*
* Based on Cisco Meraki DTS extracted from release wired-12-217818
*
* 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.
*/
/dts-v1/;
#include "apm82181.dtsi"
/ {
model = "Meraki MX60/MX60W Security Appliance";
compatible = "meraki,mx60", "meraki,buckminster", "apm,bluestone";
aliases {
serial0 = &UART1;
led-boot = &status;
led-failsafe = &failsafe;
led-running = &status;
led-upgrade = &status;
};
chosen {
stdout-path = "/plb/opb/serial@ef600400";
};
};
&CRYPTO {
status = "okay";
};
&PKA {
status = "okay";
};
&TRNG {
status = "okay";
};
&USBOTG0 {
status = "okay";
dr_mode = "host";
};
&EBC0 {
/* Buckminster has 1GiB of NAND */
ndfc@1,0 {
status = "okay";
nand {
partition@0 {
label = "u-boot";
reg = <0x00000000 0x00100000>;
read-only;
};
partition@100000 {
label = "u-boot-env";
reg = <0x00100000 0x00100000>;
read-only;
};
partition@200000 {
label = "oops";
reg = <0x00200000 0x00040000>;
};
partition@240000 {
label = "ubi";
reg = <0x00240000 0x3fdc0000>;
};
};
};
};
&UART1 {
status = "okay";
};
&GPIO0 {
status = "okay";
};
&IIC0 {
status = "okay";
};
&EMAC0 {
status = "okay";
phy-handle = <&phy0>;
mdio {
#address-cells = <1>;
#size-cells = <0>;
phy0: ethernet-phy@0 {
compatible = "ethernet-phy-id004d.d034";
reg = <0>;
qca,mib-poll-interval = <500>;
qca,ar8327-initvals = <
0x0010 0x40000000
0x0624 0x007f7f7f
0x0004 0x07a00000 /* PAD0_MODE */
0x000c 0x01000000 /* PAD6_MODE */
0x007c 0x0000007e /* PORT0_STATUS */
>;
};
};
};
&POB0 {
leds {
compatible = "gpio-leds";
status: power-green {
label = "mx60:green:power";
gpios = <&GPIO0 18 GPIO_ACTIVE_LOW>;
};
failsafe: power-orange {
label = "mx60:orange:power";
gpios = <&GPIO0 19 GPIO_ACTIVE_LOW>;
};
wan-green {
label = "mx60:green:wan";
gpios = <&GPIO0 17 GPIO_ACTIVE_LOW>;
};
wan-orange {
label = "mx60:orange:wan";
gpios = <&GPIO0 15 GPIO_ACTIVE_LOW>;
};
lan1 {
label = "mx60:green:lan1";
gpios = <&GPIO0 20 GPIO_ACTIVE_LOW>;
};
lan2 {
label = "mx60:green:lan2";
gpios = <&GPIO0 21 GPIO_ACTIVE_LOW>;
};
lan3 {
label = "mx60:green:lan3";
gpios = <&GPIO0 22 GPIO_ACTIVE_LOW>;
};
lan4 {
label = "mx60:green:lan4";
gpios = <&GPIO0 23 GPIO_ACTIVE_LOW>;
};
};
keys {
compatible = "gpio-keys";
reset {
label = "Reset button";
linux,code = <KEY_RESTART>;
gpios = <&GPIO0 16 GPIO_ACTIVE_LOW>;
interrupt-parent = <&UIC1>;
interrupts = <0x15 IRQ_TYPE_EDGE_FALLING>;
debounce-interval = <60>;
};
};
};
&PCIE0 {
/* Leave this enabled as u-boot on the MX60 will disable it for us */
status = "okay";
};
&MSI {
status = "okay";
};