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

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 <tharvey@gateworks.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw71xx.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw71xx.dtsi
index 905b68a..8e4a0ce 100644 (file)
--- a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw71xx.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw71xx.dtsi
@@ -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
                >;
        };