The USB hub has it's reset as GPIO4_IO17 but can be sub-loaded and
VBUS provided by a VBUS regulator with GPIO4_IO2 as the enable and
GPIO1_IO15 as the active-low over-current.
Enable pull-up for GPIO4_IO17 to keep hub out of reset and move VBUS
enable to GPIO4_IO2. Additionally enable pull-up on GPIO1_IO15 so that
if the hub is loaded it never over-currents.
This allows USB to work in both configurations without a device-tree
change.
Signed-off-by: Tim Harvey <tharvey@xxxxxxxxxxxxx>
---
arch/arm64/boot/dts/freescale/imx8mm-venice-gw7901.dts | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw7901.dts b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw7901.dts
index 5a1e9df39bec..db43ee28bdb6 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw7901.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw7901.dts
@@ -216,7 +216,7 @@
pinctrl-0 = <&pinctrl_reg_usb2>;
compatible = "regulator-fixed";
regulator-name = "usb_usb2_vbus";
- gpio = <&gpio4 17 GPIO_ACTIVE_HIGH>;
+ gpio = <&gpio4 2 GPIO_ACTIVE_HIGH>;
enable-active-high;
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
@@ -824,8 +824,9 @@
pinctrl_reg_usb2: regusb1grp {
fsl,pins = <
- MX8MM_IOMUXC_SAI1_TXD5_GPIO4_IO17 0x41
- MX8MM_IOMUXC_GPIO1_IO15_USB2_OTG_OC 0x41
+ MX8MM_IOMUXC_SAI1_RXD0_GPIO4_IO2 0x41
+ MX8MM_IOMUXC_SAI1_TXD5_GPIO4_IO17 0x140
+ MX8MM_IOMUXC_GPIO1_IO15_USB2_OTG_OC 0x140
>;
};
--
2.17.1
