Hello Ahmad,
Le mar. 30 mars 2021 à 10:38, Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx> a écrit :
>
> Hello Adrien,
>
> On 30.03.21 10:35, Adrien Grassein wrote:
> > Add the description for the USB host port.
> > At this time, the port will not work directly from the
> > kernel because it's connected through a resettable hub
> > that is not handle in the kernel. It should be controlled
> > in the bootloader or in the userspace.
>
> Couldn't you add a gpio-hog that gets the hub out of reset?
>
Let's try, I didn't think about this solution ^^.
> Cheers,
> Ahmad
>
> >
> > In the case of the Boundary's u-boot, this is done on the
> > boot script:
> > "
> > starting USB...
> > Bus usb@38100000: Register 2000140 NbrPorts 2
> > Starting the controller
> > USB XHCI 1.10
> > Bus usb@38200000: Register 2000140 NbrPorts 2
> > Starting the controller
> > USB XHCI 1.10
> > scanning bus usb@38100000 for devices... 1 USB Device(s) found
> > scanning bus usb@38200000 for devices... 3 USB Device(s) found
> > "
> >
> > Signed-off-by: Adrien Grassein <adrien.grassein@xxxxxxxxx>
> > ---
> > .../boot/dts/freescale/imx8mq-nitrogen.dts | 22 +++++++++++++++++++
> > 1 file changed, 22 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/freescale/imx8mq-nitrogen.dts b/arch/arm64/boot/dts/freescale/imx8mq-nitrogen.dts
> > index b46f45a82be1..7a52e247c527 100644
> > --- a/arch/arm64/boot/dts/freescale/imx8mq-nitrogen.dts
> > +++ b/arch/arm64/boot/dts/freescale/imx8mq-nitrogen.dts
> > @@ -213,6 +213,22 @@ &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";
> > + pinctrl-names = "default";
> > + pinctrl-0 = <&pinctrl_usb3_1>;
> > +};
> > +
> > &usdhc1 {
> > assigned-clocks = <&clk IMX8MQ_CLK_USDHC1>;
> > assigned-clock-rates = <400000000>;
> > @@ -388,6 +404,12 @@ 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
> >
>
> --
> Pengutronix e.K. | |
> Steuerwalder Str. 21 | http://www.pengutronix.de/ |
> 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
> Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
Thanks,
Adrien
