Re: [PATCH 7/8] arm64: dts: exynos: Enable USB in Exynos850

[Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>]

On 19/08/2023 05:17, Sam Protsenko wrote:
> Add USB controller and USB PHY controller nodes for Exynos850 SoC.
> 
> The USB controller has next features:
>   - Dual Role Device (DRD) controller
>   - DWC3 compatible
>   - Supports USB 2.0 host and USB 2.0 device interfaces
>   - Supports  full-speed (12 Mbps) and high-speed (480 Mbps) modes with
>     USB device 2.0 interface
>   - Supports on-chip USB PHY transceiver
>   - Supports up to 16 bi-directional endpoints (that includes control
>     endpoint 0)
>   - Complies with xHCI 1.00 specification
> 
> Only USB 2.0 is supported in Exynos850, so only UTMI+ PHY interface is
> specified in "phys" property (index 0) and PIPE3 is omitted (index 1).
> 
> Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
> ---
>  arch/arm64/boot/dts/exynos/exynos850.dtsi | 30 +++++++++++++++++++++++
>  1 file changed, 30 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/exynos/exynos850.dtsi b/arch/arm64/boot/dts/exynos/exynos850.dtsi
> index aa077008b3be..198d1dfcc672 100644
> --- a/arch/arm64/boot/dts/exynos/exynos850.dtsi
> +++ b/arch/arm64/boot/dts/exynos/exynos850.dtsi
> @@ -570,6 +570,36 @@ sysreg_cmgp: syscon@11c20000 {
>  			clocks = <&cmu_cmgp CLK_GOUT_SYSREG_CMGP_PCLK>;
>  		};
>  
> +		usbdrd: usb@13600000 {
> +			compatible = "samsung,exynos850-dwusb3";
> +			clocks = <&cmu_hsi CLK_GOUT_USB_BUS_EARLY_CLK>,
> +				 <&cmu_hsi CLK_GOUT_USB_REF_CLK>;
> +			clock-names = "bus_early", "ref";
> +			#address-cells = <1>;
> +			#size-cells = <1>;
> +			ranges = <0x0 0x13600000 0x10000>;

Please put ranges after compatible. I know that existing code does not
follow this convention, though.

> +			status = "disabled";
> +


Best regards,
Krzysztof