On Thu, Apr 01, 2021 at 01:23:54AM +0200, Adrien Grassein wrote:
> Add the description for the USB host port.
> This port is linked to a resettable USB HUB so handle
> this reset signal with a GPIO hog.
>
> Signed-off-by: Adrien Grassein <adrien.grassein@xxxxxxxxx>
> ---
> .../boot/dts/freescale/imx8mq-nitrogen.dts | 30 +++++++++++++++++++
> 1 file changed, 30 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx8mq-nitrogen.dts b/arch/arm64/boot/dts/freescale/imx8mq-nitrogen.dts
> index b46f45a82be1..04992cbba56e 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mq-nitrogen.dts
> +++ b/arch/arm64/boot/dts/freescale/imx8mq-nitrogen.dts
> @@ -102,6 +102,14 @@ ethphy0: ethernet-phy@4 {
> };
> };
>
> +&gpio1 {
> + usb-host-reset-hog {
> + gpio-hog;
> + gpios = <14 GPIO_ACTIVE_HIGH>;
> + output-high;
> + };
> +};
> +
> &i2c1 {
> clock-frequency = <400000>;
> pinctrl-names = "default";
> @@ -213,6 +221,22 @@ &usb3_phy0 {
> status = "okay";
> };
>
> +&usb_dwc3_1 {
> + dr_mode = "host";
> + status = "okay";
> +};
> +
> +/*
> + * On this board, USB host is connected to a resettable hub.
> + * The reset signal is connected to the GPIO <&gpio1 14 GPIO_ACTIVE_LOW>.
> + * You need to activate it in the bootloader or in the userspace.
> + */
> +&usb3_phy1 {
> + status = "okay";
We usually end property list with 'status'.
Shawn
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_usb3_1>;
> +};
> +
> &usdhc1 {
> assigned-clocks = <&clk IMX8MQ_CLK_USDHC1>;
> assigned-clock-rates = <400000000>;
> @@ -388,6 +412,12 @@ MX8MQ_IOMUXC_GPIO1_IO13_USB1_OTG_OC 0x16
> >;
> };
>
> + pinctrl_usb3_1: usb3-1grp {
> + fsl,pins = <
> + MX8MQ_IOMUXC_GPIO1_IO14_GPIO1_IO14 0x16
> + >;
> + };
> +
> pinctrl_usdhc1: usdhc1grp {
> fsl,pins = <
> MX8MQ_IOMUXC_SD1_CLK_USDHC1_CLK 0x83
> --
> 2.25.1
>
