mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-25 00:11:13 +00:00
ebc090e420
The introduction ofebf0d8dade("ath79: add new ar934x spi driver") made the SPI memory unusable on devices with very high spi-max-frequency (104 MHz). Here's how the actual clock is calculated: (AHB_CLK/((CLOCK_DIVIDER+1)*2)) where AHB_CLK is a fixed clock (e.g. 200MHz on AR9331) and CLOCK_DIVIDER is the parameter we can set. Highest clock according to this formula is AHB_CLK/2 (100MHz, but that didn't work in device tests). The next possible value is AHB_CLK/4 (50MHz). Speeds between 50 MHz and 100 MHz will be rounded down, so using values higher than 50 MHz does not provide any benefit. Consequently, this patch reduces spi-max-frequency for all devices with values higher than 50 MHz to 50 MHz (effectively, this only affects devices with 104 MHz before this patch). Tested on GL.inet GL-AR150: Boot fails with 104 MHz but is successful with both 50 MHz and 80 MHz (fast-read), where the latter two yield identical read speeds. Fixes:ebf0d8dade("ath79: add new ar934x spi driver") Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
149 lines
2.2 KiB
Plaintext
149 lines
2.2 KiB
Plaintext
// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
|
|
/dts-v1/;
|
|
|
|
#include <dt-bindings/gpio/gpio.h>
|
|
#include <dt-bindings/input/input.h>
|
|
|
|
#include "ar9330.dtsi"
|
|
|
|
/ {
|
|
model = "PQI Air-Pen";
|
|
compatible = "pqi,air-pen", "qca,ar9330";
|
|
|
|
aliases {
|
|
serial0 = &uart;
|
|
led-boot = &led_wlan;
|
|
led-failsafe = &led_wlan;
|
|
led-upgrade = &led_wlan;
|
|
};
|
|
|
|
leds {
|
|
compatible = "gpio-leds";
|
|
|
|
led_wlan: wlan {
|
|
label = "air-pen:blue:wlan";
|
|
gpios = <&gpio 0 GPIO_ACTIVE_HIGH>;
|
|
linux,default-trigger = "phy0tpt";
|
|
};
|
|
|
|
wps {
|
|
label = "air-pen:blue:wps";
|
|
gpios = <&gpio 23 GPIO_ACTIVE_HIGH>;
|
|
};
|
|
};
|
|
|
|
keys {
|
|
compatible = "gpio-keys";
|
|
|
|
wps {
|
|
label = "wps";
|
|
linux,code = <KEY_WPS_BUTTON>;
|
|
gpios = <&gpio 22 GPIO_ACTIVE_HIGH>;
|
|
debounce-interval = <60>;
|
|
};
|
|
|
|
reset {
|
|
label = "reset";
|
|
linux,code = <KEY_RESTART>;
|
|
gpios = <&gpio 12 GPIO_ACTIVE_HIGH>;
|
|
debounce-interval = <60>;
|
|
};
|
|
};
|
|
};
|
|
|
|
&uart {
|
|
status = "okay";
|
|
};
|
|
|
|
&gpio {
|
|
status = "okay";
|
|
};
|
|
|
|
&usb {
|
|
dr_mode = "host";
|
|
status = "okay";
|
|
};
|
|
|
|
&usb_phy {
|
|
status = "okay";
|
|
};
|
|
|
|
&spi {
|
|
status = "okay";
|
|
|
|
num-cs = <1>;
|
|
|
|
flash@0 {
|
|
compatible = "jedec,spi-nor";
|
|
spi-max-frequency = <50000000>;
|
|
reg = <0>;
|
|
|
|
partitions {
|
|
compatible = "fixed-partitions";
|
|
#address-cells = <1>;
|
|
#size-cells = <1>;
|
|
|
|
partition@0 {
|
|
label = "u-boot";
|
|
reg = <0x000000 0x040000>;
|
|
read-only;
|
|
};
|
|
|
|
partition@40000 {
|
|
label = "u-boot-env";
|
|
reg = <0x040000 0x010000>;
|
|
};
|
|
|
|
art: partition@50000 {
|
|
label = "art";
|
|
reg = <0x050000 0x010000>;
|
|
read-only;
|
|
};
|
|
|
|
partition@60000 {
|
|
label = "NVRAM";
|
|
reg = <0x060000 0x010000>;
|
|
read-only;
|
|
};
|
|
|
|
partition@70000 {
|
|
compatible = "denx,uimage";
|
|
label = "firmware";
|
|
reg = <0x070000 0x780000>;
|
|
};
|
|
|
|
partition@7f0000 {
|
|
label = "CONF";
|
|
reg = <0x7f0000 0x010000>;
|
|
read-only;
|
|
};
|
|
};
|
|
};
|
|
};
|
|
|
|
ð0 {
|
|
status = "okay";
|
|
|
|
mtd-mac-address = <&art 0x1002>;
|
|
|
|
gmac-config {
|
|
device = <&gmac>;
|
|
|
|
switch-phy-addr-swap = <0>;
|
|
switch-phy-swap = <0>;
|
|
};
|
|
};
|
|
|
|
ð1 {
|
|
status = "okay";
|
|
|
|
compatible = "syscon", "simple-mfd";
|
|
};
|
|
|
|
&wmac {
|
|
status = "okay";
|
|
|
|
mtd-cal-data = <&art 0x1000>;
|
|
mtd-mac-address = <&art 0x2>;
|
|
};
|