openwrt/target/linux/ath79/dts/ar7100_mikrotik_routerboard-4xx.dtsi
Christopher Hill b7a8a54542 ath79: add support for MikroTik RouterBOARD 493G (rb4xx series)
This patch adds support for the MikroTik RouterBOARD RB493G, ported
from the ar71xx target.

See https://routerboard.com/RB493G for details

Specification:
- SoC Qualcomm Atheros AR7161
- RAM: 256 MiB
- Storage: 128MiB NAND
- Ethernet: 9x 1000/100/10 Mbps
- USB 1x 2.0 / 1.0 type A
- PCIe: 3x Mini slot
- MicroSD slot

Working:
- Board/system detection
- Ethernet
- SPI
- NAND
- LEDs
- USB
- Sysupgrade

Enabled (but untested due to lack of hardware):
- PCIe - ath79_pci_irq struct has the slot/pin/IRQ mappings if needed

Installation methods:
- tftp boot initramfs image, scp then flash via "sysupgrade -n"
- nand boot existing OpenWrt, scp then flash via "sysupgrade -n"

Notes:
- initramfs image will not work if uncompressed image size over ~8.5Mb
- The "rb4xx" drivers have been enabled

Signed-off-by: Christopher Hill <ch6574@gmail.com>
2020-06-15 21:16:18 +02:00

181 lines
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// SPDX-License-Identifier: GPL-1.0-or-later OR MIT
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
#include "ar7100.dtsi"
/ {
aliases {
led-boot = &led_user;
led-failsafe = &led_user;
led-running = &led_user;
};
chosen {
bootargs = "console=ttyS0,115200";
};
leds {
compatible = "gpio-leds";
led_user: user {
label = "mikrotik:yellow:user";
gpios = <&gpio 4 GPIO_ACTIVE_HIGH>;
default-state = "on";
};
led1 {
label = "mikrotik:green:led1";
gpios = <&cpld_gpio 0 GPIO_ACTIVE_LOW>;
};
led2 {
label = "mikrotik:green:led2";
gpios = <&cpld_gpio 2 GPIO_ACTIVE_LOW>;
};
led3 {
label = "mikrotik:green:led3";
gpios = <&cpld_gpio 1 GPIO_ACTIVE_LOW>;
};
led4 {
label = "mikrotik:green:led4";
gpios = <&cpld_gpio 3 GPIO_ACTIVE_LOW>;
};
led5 {
label = "mikrotik:green:led5";
gpios = <&cpld_gpio 8 GPIO_ACTIVE_LOW>;
};
};
};
&uart {
status = "okay";
};
&gpio {
ngpios = <31>;
gpio-line-names =
"", "", "", "", "LED", "RDY", "", "MDC",
"MDIO", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "";
};
&pcie0 {
status = "okay";
};
&spi {
status = "okay";
compatible = "mikrotik,rb4xx-spi";
flash@0 {
compatible = "pm25lv512", "jedec,spi-nor";
reg = <0>;
spi-max-frequency = <25000000>;
partitions {
compatible = "mikrotik,routerboot-partitions";
#address-cells = <1>;
#size-cells = <1>;
partition@0 {
label = "routerboot1";
reg = <0x0 0x0>;
read-only;
};
hard_config {
label = "hard_config";
read-only;
};
bios {
label = "bios";
size = <0x1000>;
read-only;
};
routerboot2 {
label = "routerboot2";
read-only;
};
soft_config {
label = "soft_config";
};
};
};
cpld@1 {
compatible = "mikrotik,rb4xx-cpld";
reg = <1>;
spi-max-frequency = <25000000>;
cpld_gpio: gpio {
compatible = "mikrotik,rb4xx-gpio";
base = <32>;
gpio-controller;
#gpio-cells = <2>;
gpio-line-names =
"LED1", "LED2", "LED3", "LED4",
"FAN", "ALE", "CLE", "nCE",
"LED5";
};
nand {
compatible = "mikrotik,rb4xx-nand";
gpios = <&cpld_gpio 5 GPIO_ACTIVE_HIGH>, // ALE
<&cpld_gpio 6 GPIO_ACTIVE_HIGH>, // CLE
<&cpld_gpio 7 GPIO_ACTIVE_HIGH>, // nCE
<&gpio 5 GPIO_ACTIVE_HIGH>; // RDY
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;
partition@0 {
label = "booter";
reg = <0x0000000 0x0040000>;
read-only;
};
partition@40000 {
label = "kernel";
reg = <0x0040000 0x0800000>;
};
partition@840000 {
label = "ubi";
reg = <0x0840000 0x77c0000>;
};
};
};
};
};
&eth0 {
status = "okay";
phy-handle = <&phy0>;
};
&mdio0 {
status = "okay";
phy0: ethernet-phy@0 {
reg = <0>;
};
};