Commit bd306fdb authored by Tim Harvey's avatar Tim Harvey Committed by Shawn Guo
Browse files

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: default avatarTim Harvey <tharvey@gateworks.com>
Signed-off-by: default avatarShawn Guo <shawnguo@kernel.org>
parent 500659f3

arch/arm64/boot/dts/freescale/imx8mm-venice-gw71xx.dtsi

+3 −2
Original line number Diff line number Diff line
@@ -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

		>;

	};