Re: [PATCH v3 1/2] Documentation: bindings: add DT documentation for Rockchip USB2PHY

[Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>]

On Mon, Jun 06, 2016 at 05:20:03PM +0800, Frank Wang wrote:
> Signed-off-by: Frank Wang <frank.wang-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
> ---
> 
> Changes in v3:
>  - Added 'clocks' and 'clock-names' optional properties.
>  - Specified 'otg-port' and 'host-port' as the sub-node name.
> 
> Changes in v2:
>  - Changed vbus_host optional property from gpio to regulator.
>  - Specified vbus_otg-supply optional property.
>  - Specified otg_id and otg_bvalid property.
> 
>  .../bindings/phy/phy-rockchip-inno-usb2.txt        |   60 ++++++++++++++++++++
>  1 file changed, 60 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.txt
> 
> diff --git a/Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.txt b/Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.txt
> new file mode 100644
> index 0000000..0b4bbbb
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.txt
> @@ -0,0 +1,60 @@
> +ROCKCHIP USB2.0 PHY WITH INNO IP BLOCK
> +
> +Required properties (phy (parent) node):
> + - compatible : should be one of the listed compatibles:
> +	* "rockchip,rk3366-usb2phy"
> +	* "rockchip,rk3399-usb2phy"
> + - #clock-cells : should be 0.
> + - clock-output-names : specify the 480m output clock name.
> +
> +Optional properties:
> + - clocks : phandle + phy specifier pair, for the input clock of phy.
> + - clock-names : input clock name of phy, must be "phyclk".
> + - vbus_host-supply : phandle to a regulator that supplies host vbus.
> + - vbus_otg-supply : phandle to a regulator that supplies otg vbus.

Nit: s/_/-/ here.

Otherwise the rest of this looks generally fine, though I'm confused as
to how you address the programming interface(s), given none are
described.

Thanks,
Mark.

> +
> +Required nodes : a sub-node is required for each port the phy provides.
> +		 The sub-node name is used to identify host or otg port,
> +		 and shall be the following entries:
> +	* "otg-port" : the name of otg port.
> +	* "host-port" : the name of host port.
> +
> +Required properties (port (child) node):
> + - #phy-cells : must be 0. See ./phy-bindings.txt for details.
> + - interrupts : specify an interrupt for each entry in interrupt-names.
> + - interrupt-names : a list which shall be the following entries:
> +	* "otg_id" : for the otg id interrupt.
> +	* "otg_bvalid" : for the otg vbus interrupt.
> +	* "linestate" : for the host/otg linestate interrupt.
> +
> +Example:
> +
> +grf: syscon@ff770000 {
> +	compatible = "rockchip,rk3366-grf", "syscon", "simple-mfd";
> +	#address-cells = <1>;
> +	#size-cells = <1>;
> +
> +...
> +
> +	u2phy: usb2-phy {
> +		compatible = "rockchip,rk3366-usb2phy";
> +		#clock-cells = <0>;
> +		clock-output-names = "sclk_otgphy0_480m";
> +
> +		u2phy_otg: otg-port {
> +			#phy-cells = <0>;
> +			interrupts = <GIC_SPI 93 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>;
> +			interrupt-names = "otg_id", "otg_bvalid", "linestate";
> +			status = "okay";
> +		};
> +
> +		u2phy_host: host-port {
> +			#phy-cells = <0>;
> +			interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>;
> +			interrupt-names = "linestate";
> +			status = "okay";
> +		};
> +	};
> +};
> -- 
> 1.7.9.5
> 
> 
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