linux-kernel - Re: [RESEND PATCH 2/6] Documentation: bindings: add dt doc for Rockchip USB Type-C PHY

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Date:	Wed, 1 Jun 2016 09:54:04 -0500
From:	Rob Herring <robh@...nel.org>
To:	Chris Zhong <zyw@...k-chips.com>
Cc:	dianders@...omium.org, tfiga@...omium.org, heiko@...ech.de,
	yzq@...k-chips.com, linux-rockchip@...ts.infradead.org,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [RESEND PATCH 2/6] Documentation: bindings: add dt doc for
 Rockchip USB Type-C PHY

On Fri, May 27, 2016 at 06:45:38PM +0800, Chris Zhong wrote:
> This patch adds a binding that describes the Rockchip USB Type-C PHY
> for rk3399.
> 
> Signed-off-by: Chris Zhong <zyw@...k-chips.com>
> ---
> 
>  .../devicetree/bindings/phy/phy-rockchip-typec.txt | 55 ++++++++++++++++++++++
>  1 file changed, 55 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt
> 
> diff --git a/Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt b/Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt
> new file mode 100644
> index 0000000..402f667
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt
> @@ -0,0 +1,55 @@
> +ROCKCHIP type-c PHY
> +
> +Required properties:
> + - compatible: should be "rockchip,rk3399-typec-phy"
> + - reg : Address and length of the usb phy control register set
> + - rockchip,grf : phandle to the syscon managing the "general
> +   register files"
> + - clocks : phandle + clock specifier for the phy clocks
> + - clock-names: string, clock name, must be "tcpdcore", "tcpdphy_ref";
> + - resets : a list of phandle + reset specifier pairs
> + - reset-names : string reset name, must be:
> +		 "tcphy_rst", "tcphy_pipe_rst", "uphy_tcphy_rst"
> + - #phy-cells: Must be 0.  See ./phy-bindings.txt for details.
> + - rockchip,usb3phy*: phy registers embed in grf

You need to document each one and state the number of cells and what the 
contain. Also, don't use '_' in the names.

> +
> +Example:
> +	tcphy0: phy@...c0000 {
> +		compatible = "rockchip,rk3399-typec-phy";
> +		reg = <0x0 0xff7c0000 0x0 0x40000>;
> +		#phy-cells = <0>;
> +		rockchip,grf = <&grf>;
> +		clocks = <&cru SCLK_UPHY0_TCPDCORE>,
> +			 <&cru SCLK_UPHY0_TCPDPHY_REF>;
> +		clock-names = "tcpdcore", "tcpdphy_ref";
> +		resets = <&cru SRST_UPHY0>,
> +			 <&cru SRST_UPHY0_PIPE_L00>,
> +			 <&cru SRST_P_UPHY0_TCPHY>;
> +		reset-names = "tcphy_rst", "tcphy_pipe_rst", "uphy_tcphy_rst";
> +		rockchip,usb3phy_con0 = <0x0e580 0 16>;
> +		rockchip,usb3phy_con1 = <0x0e584 0 16>;
> +		rockchip,usb3phy_con2 = <0x0e588 0 16>;
> +		rockchip,usb3phy_status0 = <0x0e5c0 0 13>;
> +		rockchip,usb3phy_status1 = <0x0e5c4 0 12>;
> +		status = "disabled";
> +	};
> +
> +	tcphy1: phy@...00000 {
> +		compatible = "rockchip,rk3399-typec-phy";
> +		reg = <0x0 0xff800000 0x0 0x40000>;
> +		#phy-cells = <0>;
> +		rockchip,grf = <&grf>;
> +		clocks = <&cru SCLK_UPHY1_TCPDCORE>,
> +			 <&cru SCLK_UPHY1_TCPDPHY_REF>;
> +		clock-names = "tcpdcore", "tcpdphy_ref";
> +		resets = <&cru SRST_UPHY1>,
> +		         <&cru SRST_UPHY1_PIPE_L00>,
> +			 <&cru SRST_P_UPHY1_TCPHY>;
> +		reset-names = "tcphy_rst", "tcphy_pipe_rst", "uphy_tcphy_rst";
> +		rockchip,usb3phy_con0 = <0x0e58c 0 16>;
> +		rockchip,usb3phy_con1 = <0x0e590 0 16>;
> +		rockchip,usb3phy_con2 = <0x0e594 0 16>;
> +		rockchip,usb3phy_status0 = <0x0e5c0 16 13>;
> +		rockchip,usb3phy_status1 = <0x0e5c4 16 12>;
> +		status = "disabled";
> +	};
> -- 
> 2.6.3
>