linux-kernel - [PATCH AUTOSEL 5.14 155/252] arm64: dts: imx8mm-venice-gw71xx: fix USB OTG VBUS

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Date:   Thu,  9 Sep 2021 07:39:29 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Tim Harvey <tharvey@...eworks.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sasha Levin <sashal@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH AUTOSEL 5.14 155/252] arm64: dts: imx8mm-venice-gw71xx: fix USB OTG VBUS

From: Tim Harvey <tharvey@...eworks.com>

[ Upstream commit bd306fdb4e60bcb1d7ea5431a74092803d3784a6 ]

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@...eworks.com>
Signed-off-by: Shawn Guo <shawnguo@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/arm64/boot/dts/freescale/imx8mm-venice-gw71xx.dtsi | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw71xx.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw71xx.dtsi
index 905b68a3daa5..8e4a0ce99790 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw71xx.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw71xx.dtsi
@@ -46,7 +46,7 @@ reg_usb_otg1_vbus: regulator-usb-otg1 {
 		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 @@ MX8MM_IOMUXC_GPIO1_IO15_GPIO1_IO15	0x41
 
 	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
 		>;
 	};
-- 
2.30.2