openwrt/target/linux/ramips/dts/mt7620a_iptime.dtsi
Sungbo Eo 13a185bf8a ramips: increase spi-max-frequency for ipTIME mt7620 devices
This commit increases the hardware SPI frequency from 24.2MHz to 48.3MHz.

[    5.314163] m25p80 spi0.0: speed: 24166666/40000000, rate: 8, prescal: 2, loops: 226
[    5.076323] m25p80 spi0.0: speed: 48333333/50000000, rate: 4, prescal: 1, loops: 162

`time cat /dev/mtd2 >/dev/null` is reduced from 5.64s to 4.36s on A104ns,
and from 11.39s to 8.81s on A1004ns.

Signed-off-by: Sungbo Eo <mans0n@gorani.run>
2020-04-18 12:35:54 +08:00

87 lines
1.2 KiB
Plaintext

// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
#include "mt7620a.dtsi"
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
/ {
aliases {
label-mac-device = &ethernet;
};
};
&gpio1 {
status = "okay";
};
&spi0 {
status = "okay";
flash@0 {
compatible = "jedec,spi-nor";
reg = <0>;
spi-max-frequency = <50000000>;
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;
uboot: partition@0 {
label = "u-boot";
reg = <0x0 0x20000>;
read-only;
};
partition@20000 {
label = "config";
reg = <0x20000 0x10000>;
read-only;
};
firmware: partition@30000 {
compatible = "denx,uimage";
label = "firmware";
};
};
};
};
&ethernet {
mtd-mac-address = <&uboot 0x1fc20>;
};
&ehci {
status = "okay";
};
&ohci {
status = "okay";
};
&pcie {
status = "okay";
};
&pcie0 {
wifi@0,0 {
compatible = "mediatek,mt76";
reg = <0x0000 0 0 0 0>;
mediatek,mtd-eeprom = <&uboot 0x1f800>;
ieee80211-freq-limit = <5000000 6000000>;
led {
led-sources = <0>;
led-active-low;
};
};
};
&wmac {
pinctrl-names = "default";
pinctrl-0 = <&wled_pins>;
ralink,mtd-eeprom = <&uboot 0x1f400>;
};