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

From: Heiko Stuebner <heiko@sntech.de>
To: Chris Zhong <zyw@rock-chips.com>
Cc: dianders@chromium.org, tfiga@chromium.org, yzq@rock-chips.com,
	linux-rockchip@lists.infradead.org, devicetree@vger.kernel.org,
	Kumar Gala <galak@codeaurora.org>,
	linux-kernel@vger.kernel.org,
	Ian Campbell <ijc+devicetree@hellion.org.uk>,
	Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>,
	Mark Rutland <mark.rutland@arm.com>,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 2/6] Documentation: bindings: add dt doc for Rockchip USB Type-C PHY
Date: Fri, 27 May 2016 10:29:57 +0200	[thread overview]
Message-ID: <2812026.ptEv4ktvbn@phil> (raw)
In-Reply-To: <1464328939-8073-3-git-send-email-zyw@rock-chips.com>

Hi Chris,

Am Freitag, 27. Mai 2016, 14:02:15 schrieb Chris Zhong:
> This patch adds a binding that describes the Rockchip USB Type-C PHY
> for rk3399.
> 
> Signed-off-by: Chris Zhong <zyw@rock-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
> +
> +Example:
> +	tcphy0: phy@ff7c0000 {
> +		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>;

please embedded this register data in the driver instead (not in the 
devicetree), matched against the compatible value.
See Frank's usb2phy driver for reference if needed.

Thanks
Heiko