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ramips: mt7621: use regulators for USB GPIO

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Regulators as implemented by the XHCI driver only accept one GPIO.
However, we can abuse the fact that the XHCI driver accepts two
regulators, one for 5V and the other for 3.3V, for USB 2 and 3 GPIOs.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/16967
Signed-off-by: Robert Marko <robimarko@gmail.com>
This commit is contained in:
Rosen Penev 2024-11-15 15:22:42 -08:00 committed by Robert Marko
parent 9ccabb3f42
commit 079db0ab81
4 changed files with 87 additions and 53 deletions
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35
target/linux/ramips/dts/mt7621_d-team_pbr-m1.dts
View file

@ -60,21 +60,27 @@
};
};
reg_usb_vbus: regulator-usb {
compatible = "regulator-fixed";
regulator-name = "usb_vbus";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
gpios = <&gpio 25 GPIO_ACTIVE_HIGH>;
enable-active-high;
};
reg_3p3v: regulator-3p3v {
compatible = "regulator-fixed";
regulator-name = "fixed-3.3V";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
gpios = <&gpio 22 GPIO_ACTIVE_HIGH>;
enable-active-high;
};
gpio_export {
compatible = "gpio-export";
power_usb2 {
gpio-export,name = "power_usb2";
gpio-export,output = <1>;
gpios = <&gpio 22 GPIO_ACTIVE_HIGH>;
};
power_usb3 {
gpio-export,name = "power_usb3";
gpio-export,output = <1>;
gpios = <&gpio 25 GPIO_ACTIVE_HIGH>;
};
power_sata {
gpio-export,name = "power_sata";
gpio-export,output = <1>;
@ -102,6 +108,11 @@
status = "okay";
};
&xhci {
vusb33-supply = <&reg_3p3v>;
vbus-supply = <&reg_usb_vbus>;
};
&spi0 {
status = "okay";

37
target/linux/ramips/dts/mt7621_dual-q_h721.dts
View file

@ -21,22 +21,6 @@
bootargs = "console=ttyS0,115200";
};
gpio-export {
compatible = "gpio-export";
usb-30-power {
gpio-export,name = "usb-30-power";
gpio-export,output = <0>;
gpios = <&gpio 22 GPIO_ACTIVE_LOW>;
};
usb-20-power {
gpio-export,name = "usb-20-power";
gpio-export,output = <0>;
gpios = <&gpio 23 GPIO_ACTIVE_LOW>;
};
};
keys {
compatible = "gpio-keys";
@ -91,6 +75,27 @@
gpios = <&gpio 27 GPIO_ACTIVE_LOW>;
};
};
reg_usb_vbus: regulator-usb {
compatible = "regulator-fixed";
regulator-name = "usb_vbus";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
gpios = <&gpio 22 GPIO_ACTIVE_LOW>;
};
reg_3p3v: regulator-3p3v {
compatible = "regulator-fixed";
regulator-name = "fixed-3.3V";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
gpios = <&gpio 23 GPIO_ACTIVE_LOW>;
};
};
&xhci {
vusb33-supply = <&reg_3p3v>;
vbus-supply = <&reg_usb_vbus>;
};
&spi0 {

33
target/linux/ramips/dts/mt7621_lenovo_newifi-d1.dts
View file

@ -59,20 +59,22 @@
};
};
gpio_export {
compatible = "gpio-export";
reg_usb_vbus: regulator-usb {
compatible = "regulator-fixed";
regulator-name = "usb_vbus";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
gpios = <&gpio 11 GPIO_ACTIVE_HIGH>;
enable-active-high;
};
usb2power {
gpio-export,name = "usb2power";
gpio-export,output = <1>;
gpios = <&gpio 9 GPIO_ACTIVE_HIGH>;
};
usb3power {
gpio-export,name = "usb3power";
gpio-export,output = <1>;
gpios = <&gpio 11 GPIO_ACTIVE_HIGH>;
};
reg_3p3v: regulator-3p3v {
compatible = "regulator-fixed";
regulator-name = "fixed-3.3V";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
gpios = <&gpio 9 GPIO_ACTIVE_HIGH>;
enable-active-high;
};
};
@ -80,6 +82,11 @@
status = "okay";
};
&xhci {
vusb33-supply = <&reg_3p3v>;
vbus-supply = <&reg_usb_vbus>;
};
&spi0 {
status = "okay";

35
target/linux/ramips/dts/mt7621_xzwifi_creativebox-v1.dts
View file

@ -67,24 +67,35 @@
gpio_export {
compatible = "gpio-export";
power_usb2 {
gpio-export,name = "power_usb2";
gpio-export,output = <1>;
gpios = <&gpio 22 GPIO_ACTIVE_HIGH>;
};
power_usb3 {
gpio-export,name = "power_usb3";
gpio-export,output = <1>;
gpios = <&gpio 25 GPIO_ACTIVE_HIGH>;
};
power_sata {
gpio-export,name = "power_sata";
gpio-export,output = <1>;
gpios = <&gpio 27 GPIO_ACTIVE_HIGH>;
};
};
reg_usb_vbus: regulator-usb {
compatible = "regulator-fixed";
regulator-name = "usb_vbus";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
gpios = <&gpio 25 GPIO_ACTIVE_HIGH>;
enable-active-high;
};
reg_3p3v: regulator-3p3v {
compatible = "regulator-fixed";
regulator-name = "fixed-3.3V";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
gpios = <&gpio 22 GPIO_ACTIVE_HIGH>;
enable-active-high;
};
};
&xhci {
vusb33-supply = <&reg_3p3v>;
vbus-supply = <&reg_usb_vbus>;
};
&spi0 {