Re: [PATCH v5 5/8] arm64: dts: ti: k3-j721s2-common-proc-board: Add USB support

[Ravi Gunasekaran <r-gunasekaran@ti.com>]

On 03/11/22 10:11 am, Matt Ranostay wrote:
> From: Aswath Govindraju <a-govindraju@ti.com>
> 
> The board uses lane 1 of SERDES for USB. Set the mux
> accordingly.
> 
> The USB controller and EVM supports super-speed for USB0
> on the Type-C port. However, the SERDES has a limitation
> that upto 2 protocols can be used at a time. The SERDES is
> wired for PCIe, eDP and USB super-speed. It has been
> chosen to use PCIe and eDP as default. So restrict
> USB0 to high-speed mode.
> 
> Cc: Vignesh Raghavendra <vigneshr@ti.com>
> Cc: Nishanth Menon <nm@ti.com>
> Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>
> Signed-off-by: Matt Ranostay <mranostay@ti.com>
> ---
>  .../dts/ti/k3-j721s2-common-proc-board.dts    | 22 +++++++++++++++++++
>  1 file changed, 22 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts b/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts
> index c3a397484c70..c787d46f89de 100644
> --- a/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts
> +++ b/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts
> @@ -147,6 +147,12 @@ vdd_sd_dv_pins_default: vdd-sd-dv-pins-default {
>  			J721S2_IOPAD(0x020, PIN_INPUT, 7) /* (AA23) MCAN15_RX.GPIO0_8 */
>  		>;
>  	};
> +
> +	main_usbss0_pins_default: main-usbss0-pins-default {
> +		pinctrl-single,pins = <
> +			J721S2_IOPAD(0x0ec, PIN_OUTPUT, 6) /* (AG25) TIMER_IO1.USB0_DRVVBUS */
> +		>;
> +	};
>  };
>  
>  &wkup_pmx0 {
> @@ -318,6 +324,22 @@ serdes0_pcie_link: phy@0 {
>  	};
>  };
>  
> +&usb_serdes_mux {
> +	idle-states = <1>; /* USB0 to SERDES lane 1 */
> +};
> +
> +&usbss0 {
> +	pinctrl-0 = <&main_usbss0_pins_default>;
> +	pinctrl-names = "default";
> +	ti,vbus-divider;
> +	ti,usb2-only;
> +};
> +
> +&usb0 {
> +	dr_mode = "otg";
> +	maximum-speed = "high-speed";
> +};
> +
>  &mcu_mcan0 {
>  	status = "okay";
>  	pinctrl-names = "default";

Reviewed-by: Ravi Gunasekaran <r-gunasekaran@ti.com>

-- 
Regards,
Ravi