linux-kernel - Re: [PATCH 5/6] dt-bindings: add documentation of rk3399 clock controller

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Date:	Thu, 18 Feb 2016 08:36:48 -0600
From:	Rob Herring <robh@...nel.org>
To:	"jianqun.xu" <jay.xu@...k-chips.com>
Cc:	heiko@...ech.de, pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
	jwerner@...omium.org, broonie@...nel.org, catalin.marinas@....com,
	will.deacon@....com, sboyd@...eaurora.org,
	linus.walleij@...aro.org, sjoerd.simons@...labora.co.uk,
	huangtao@...k-chips.com, linux-rockchip@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	devicetree@...r.kernel.org, Xing Zheng <zhengxing@...k-chips.com>
Subject: Re: [PATCH 5/6] dt-bindings: add documentation of rk3399 clock
 controller

On Wed, Feb 17, 2016 at 09:54:49AM +0800, jianqun.xu wrote:
> From: Xing Zheng <zhengxing@...k-chips.com>
> 
> Add the devicetree binding for the cru on the rk3399 which quite
> similar structured as previous clock controllers.
> 
> Signed-off-by: Xing Zheng <zhengxing@...k-chips.com>
> ---
>  .../bindings/clock/rockchip,rk3399-cru.txt         | 82 ++++++++++++++++++++++
>  1 file changed, 82 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/clock/rockchip,rk3399-cru.txt
> 
> diff --git a/Documentation/devicetree/bindings/clock/rockchip,rk3399-cru.txt b/Documentation/devicetree/bindings/clock/rockchip,rk3399-cru.txt
> new file mode 100644
> index 0000000..07bcc6e
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/rockchip,rk3399-cru.txt
> @@ -0,0 +1,82 @@
> +* Rockchip RK3399 Clock and Reset Unit

[...]

> +Example: General Register Files
> +
> +	pmugrf: syscon@...20000 {
> +		compatible = "rockchip,rk3399-pmugrf", "syscon";

Is this documented?

> +		reg = <0x0 0xff320000 0x0 0x1000>;
> +	};
> +
> +	grf: syscon@...70000 {
> +		compatible = "rockchip,rk3399-grf", "syscon";

ditto.

> +		reg = <0x0 0xff770000 0x0 0x10000>;
> +	};
> +
> +Example: Clock controller node:
> +
> +	pmucru: pmu-clock-controller@...50000 {
> +		compatible = "rockchip,rk3399-pmucru";
> +		reg = <0x0 0xff750000 0x0 0x1000>;
> +		#clock-cells = <1>;
> +		#reset-cells = <1>;
> +	};
> +
> +	cru: clock-controller@...60000 {
> +		compatible = "rockchip,rk3399-cru";
> +		reg = <0x0 0xff760000 0x0 0x1000>;
> +		rockchip,grf = <&grf>;
> +		#clock-cells = <1>;
> +		#reset-cells = <1>;
> +	};
> +
> +Example: UART controller node that consumes the clock generated by the clock
> +  controller:
> +
> +	uart0: serial@...a0000 {
> +		compatible = "rockchip,rk3399-uart", "snps,dw-apb-uart";
> +		reg = <0x0 0xff180000 0x0 0x100>;
> +		clocks = <&cru SCLK_UART0>, <&cru PCLK_UART0>;
> +		clock-names = "baudclk", "apb_pclk";
> +		interrupts = <GIC_SPI 99 IRQ_TYPE_LEVEL_HIGH>;
> +		reg-shift = <2>;
> +		reg-io-width = <4>;
> +	};
> -- 
> 1.9.1
> 
>