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openwrt/target/linux/ramips/dts/mt7628an_hiwifi_hc5x61a.dtsi
Shiji Yang 73eeac49be ramips: limit max spi clock frequency to 50 MHz
In the past few years, we have received several reports about SPI
Flash not working properly. This is caused by excessively fast
clock frequency. It's really annoying to fix them one by one. Let's
reduce these aggressive frequencies to 50 MHz. This is a safe and
suggested value in the vendor SDK.

Signed-off-by: Shiji Yang <yangshiji66@qq.com>
2024-07-10 12:20:35 +02:00

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// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
#include "mt7628an.dtsi"
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
/ {
compatible = "hiwifi,hc5x61a", "mediatek,mt7628an-soc";
aliases {
led-boot = &led_system;
led-failsafe = &led_system;
led-running = &led_system;
led-upgrade = &led_system;
};
chosen {
bootargs = "console=ttyS0,115200";
};
keys {
compatible = "gpio-keys";
reset {
label = "reset";
gpios = <&gpio 38 GPIO_ACTIVE_LOW>;
linux,code = <KEY_RESTART>;
};
};
};
&spi0 {
status = "okay";
flash@0 {
compatible = "jedec,spi-nor";
reg = <0>;
spi-max-frequency = <50000000>;
m25p,fast-read;
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;
partition@0 {
label = "u-boot";
reg = <0x0 0x30000>;
read-only;
};
partition@30000 {
label = "hw_panic";
reg = <0x30000 0x10000>;
read-only;
};
partition@40000 {
label = "factory";
reg = <0x40000 0x10000>;
read-only;
nvmem-layout {
compatible = "fixed-layout";
#address-cells = <1>;
#size-cells = <1>;
eeprom_factory_0: eeprom@0 {
reg = <0x0 0x400>;
};
eeprom_factory_8000: eeprom@8000 {
reg = <0x8000 0x200>;
};
macaddr_factory_4: macaddr@4 {
reg = <0x4 0x6>;
};
macaddr_factory_2e: macaddr@2e {
reg = <0x2e 0x6>;
};
};
};
partition@50000 {
compatible = "denx,uimage";
label = "firmware";
reg = <0x50000 0xf70000>;
};
partition@fc0000 {
label = "oem";
reg = <0xfc0000 0x20000>;
read-only;
};
partition@fe0000 {
label = "bdinfo";
reg = <0xfe0000 0x10000>;
read-only;
};
partition@ff0000 {
label = "backup";
reg = <0xff0000 0x10000>;
read-only;
};
};
};
};
&ethernet {
nvmem-cells = <&macaddr_factory_4>;
nvmem-cell-names = "mac-address";
};
&wmac {
status = "okay";
nvmem-cells = <&eeprom_factory_0>;
nvmem-cell-names = "eeprom";
};