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SubjectRe: [PATCH v2 6/6] arm64: dts: ti: k3-j7200-common-proc-board: Add USB support
On 17:52-20200907, Roger Quadros wrote:
> Enable USB0 port in high-speed (2.0) mode.


Am I right that this is a choice forced by serdes mux configuration
selection? Might be good to document it (default speed is super-speed).

>
> The board uses lane 3 of SERDES for USB. Set the mux
> accordingly.
>
> Signed-off-by: Roger Quadros <rogerq@ti.com>
> ---
> .../dts/ti/k3-j7200-common-proc-board.dts | 22 +++++++++++++++++++
> 1 file changed, 22 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts b/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts
> index 0ecaba600704..5ce3fddbd617 100644
> --- a/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts
> +++ b/arch/arm64/boot/dts/ti/k3-j7200-common-proc-board.dts
> @@ -42,6 +42,12 @@
> J721E_IOPAD(0xe4, PIN_INPUT, 8) /* (V1) TIMER_IO0.MMC1_SDCD */
> >;
> };
> +
> + main_usbss0_pins_default: main-usbss0-pins-default {
> + pinctrl-single,pins = <
> + J721E_IOPAD(0x120, PIN_OUTPUT, 0) /* (T4) USB0_DRVVBUS */
> + >;
> + };
> };
>
> &wkup_uart0 {
> @@ -145,3 +151,19 @@
> idle-states = <SERDES0_LANE0_PCIE1_LANE0>, <SERDES0_LANE1_PCIE1_LANE1>,
> <SERDES0_LANE2_QSGMII_LANE1>, <SERDES0_LANE3_IP4_UNUSED>;
> };
> +
> +&usb_serdes_mux {
> + idle-states = <1>; /* USB0 to SERDES lane 3 */
> +};
> +
> +&usbss0 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&main_usbss0_pins_default>;
> + ti,vbus-divider;
> + ti,usb2-only;
> +};
> +
> +&usb0 {
> + dr_mode = "otg";
> + maximum-speed = "high-speed";
> +};
> --
> Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
> Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
>

--
Regards,
Nishanth Menon
Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3 1A34 DDB5 849D 1736 249D

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