Re: [PATCH v2 02/10] dt-bindings: misc: Add bindings for HiSilicon usb hub and data role switch functionality on HiKey960

[Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>]

Hello!

On 18.02.2019 14:23, Yu Chen wrote:

> This patch adds binding documentation to support usb hub and usb
> data role switch of Hisilicon HiKey960 Board.
> 
> Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
> Cc: Rob Herring <robh+dt@kernel.org>
> Cc: Mark Rutland <mark.rutland@arm.com>
> Cc: John Stultz <john.stultz@linaro.org>
> Cc: Binghui Wang <wangbinghui@hisilicon.com>
> Signed-off-by: Yu Chen <chenyu56@huawei.com>
> ---
> v1:
> * Fix some format errors as suggested by Sergei.
> * Modify gpio description to use gpiod API.
> v2:
> * Remove information about Hikey.
> * Fix gpio description.
> * Remove device_type of endpoint.
> ---
> ---
>   .../bindings/misc/hisilicon-hikey-usb.txt          | 35 ++++++++++++++++++++++
>   1 file changed, 35 insertions(+)
>   create mode 100644 Documentation/devicetree/bindings/misc/hisilicon-hikey-usb.txt
> 
> diff --git a/Documentation/devicetree/bindings/misc/hisilicon-hikey-usb.txt b/Documentation/devicetree/bindings/misc/hisilicon-hikey-usb.txt
> new file mode 100644
> index 000000000000..c2b789b515df
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/misc/hisilicon-hikey-usb.txt
> @@ -0,0 +1,35 @@
> +Support usb hub and usb data role switch of Hisilicon HiKey960 Board.
> +
> +-----------------------------
> +
> +Required properties:
> +- compatible: "hisilicon,gpio-hubv1","hisilicon,hikey960-usb"

    Only one of those, looking at your example?
    Need a space after comma, BTW.

> +- typec-vbus-gpios: gpio to control the vbus of typeC port
> +- typec-vbus-enable-val: gpio value that enable the vbus of typeC port

    Hm, I thought that can be inferred from the GPIO specifier above...

> +- otg-switch-gpios: gpio to switch DP & DM between the hub and typeC port
> +- hub-vdd33-en-gpios: gpio to enable the power of hub
> +- pinctrl-0: pinctrl config

    You forgot about "pinctrl-names"...

> +
> +Example
> +-----
> +
> +	hisi_hikey_usb: hisi_hikey_usb {
> +		compatible = "hisilicon,hikey960-usb";
> +		typec-vbus-gpios = <&gpio25 2 0>;
> +		typec-vbus-enable-val = <1>;
> +		otg-switch-gpios = <&gpio25 6 0>;
> +		hub-vdd33-en-gpios = <&gpio5 6 0>;
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&usbhub5734_pmx_func>;
> +
> +		port {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +
> +			hikey_usb_ep: endpoint@0 {
> +				reg = <0>;
> +				remote-endpoint = <&dwc3_role_switch_notify>;
> +			};
> +		};
> +
> +	};

MBR, Sergei