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arm64: dts: imx8mm-venice-gw71xx: fix USB OTG VBUS

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The GW71xx has a USB Type-C connector with USB 2.0 signaling. GPIO1_12
is the power-enable to the TPS25821 Source controller and power switch
responsible for monitoring the CC pins and enabling VBUS. Therefore
GPIO1_12 must always be enabled and the vbus output enable from the
IMX8MM can be ignored.

To fix USB OTG VBUS enable a pull-up on GPIO1_12 to always power the
TPS25821 and change the regulator output to GPIO1_10 which is
unconnected.

Signed-off-by: Tim Harvey <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
This commit is contained in:
Tim Harvey authored and Shawn Guo committed 2021-08-14 12:39:27 +08:00
1 parent 500659f3b4
commit bd306fdb4e
1 file changed
+3 -2
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arch/arm64/boot/dts/freescale/imx8mm-venice-gw71xx.dtsi
+3 -2
View File
@@ -46,7 +46,7 @@
pinctrl-0 = <&pinctrl_reg_usb1_en>;
compatible = "regulator-fixed";
regulator-name = "usb_otg1_vbus";
gpio = <&gpio1 12 GPIO_ACTIVE_HIGH>;
gpio = <&gpio1 10 GPIO_ACTIVE_HIGH>;
enable-active-high;
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
@@ -156,7 +156,8 @@
pinctrl_reg_usb1_en: regusb1grp {
fsl,pins = <
MX8MM_IOMUXC_GPIO1_IO12_GPIO1_IO12 0x41
MX8MM_IOMUXC_GPIO1_IO10_GPIO1_IO10 0x41
MX8MM_IOMUXC_GPIO1_IO12_GPIO1_IO12 0x141
MX8MM_IOMUXC_GPIO1_IO13_USB1_OTG_OC 0x41
>;
};