Re: [PATCH v3 5/5] dts: usb: add StarFive JH7110 USB dts configuration.

[Krzysztof Kozlowski]

On 15/03/2023 11:44, Minda Chen wrote:
> USB Glue layer and Cadence USB subnode configuration,
> also includes USB and PCIe phy dts configuration.
> 
> Signed-off-by: Minda Chen <minda.chen@xxxxxxxxxxxxxxxx>

Use subject prefixes matching the subsystem (which you can get for
example with `git log --oneline -- DIRECTORY_OR_FILE` on the directory
your patch is touching).

> ---
>  .../jh7110-starfive-visionfive-2.dtsi         |  7 +++
>  arch/riscv/boot/dts/starfive/jh7110.dtsi      | 54 +++++++++++++++++++
>  2 files changed, 61 insertions(+)
> 
> diff --git a/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi b/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
> index a132debb9b53..c64476aebc1a 100644
> --- a/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
> +++ b/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
> @@ -236,3 +236,10 @@
>  	pinctrl-0 = <&uart0_pins>;
>  	status = "okay";
>  };
> +
> +&usb0 {
> +	status = "okay";
> +	usbdrd_cdns3: usb@0 {

You should rather override by phandle this as well.

> +		dr_mode = "peripheral";
> +	};
> +};
> diff --git a/arch/riscv/boot/dts/starfive/jh7110.dtsi b/arch/riscv/boot/dts/starfive/jh7110.dtsi
> index f70a4ed47eb4..17722fd1be62 100644
> --- a/arch/riscv/boot/dts/starfive/jh7110.dtsi
> +++ b/arch/riscv/boot/dts/starfive/jh7110.dtsi
> @@ -362,6 +362,60 @@
>  			status = "disabled";
>  		};
>  
> +		usb0: usb@10100000 {
> +			compatible = "starfive,jh7110-usb";
> +			clocks = <&stgcrg JH7110_STGCLK_USB0_LPM>,
> +				 <&stgcrg JH7110_STGCLK_USB0_STB>,
> +				 <&stgcrg JH7110_STGCLK_USB0_APB>,
> +				 <&stgcrg JH7110_STGCLK_USB0_AXI>,
> +				 <&stgcrg JH7110_STGCLK_USB0_UTMI_APB>;
> +			clock-names = "lpm", "stb", "apb", "axi", "utmi_apb";
> +			resets = <&stgcrg JH7110_STGRST_USB0_PWRUP>,
> +				 <&stgcrg JH7110_STGRST_USB0_APB>,
> +				 <&stgcrg JH7110_STGRST_USB0_AXI>,
> +				 <&stgcrg JH7110_STGRST_USB0_UTMI_APB>;
> +			starfive,stg-syscon = <&stg_syscon 0x4 0xc4 0x148 0x1f4>;
> +			starfive,sys-syscon = <&sys_syscon 0x18>;
> +			status = "disabled";
> +			#address-cells = <1>;
> +			#size-cells = <1>;
> +			ranges = <0x0 0x0 0x10100000 0x100000>;

reg and ranges should be second property. This also applies to your
binding example.


Best regards,
Krzysztof