linux-kernel - Re: [PATCH v3 2/7] clk: hisilicon: add dt-binding document for Hi3519 CRG

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Message-ID: <20151211151909.GA21272@rob-hp-laptop>
Date:	Fri, 11 Dec 2015 09:19:09 -0600
From:	Rob Herring <robh@...nel.org>
To:	Jiancheng Xue <xuejiancheng@...wei.com>
Cc:	mturquette@...libre.com, sboyd@...eaurora.org, pawel.moll@....com,
	mark.rutland@....com, ijc+devicetree@...lion.org.uk,
	galak@...eaurora.org, linux@....linux.org.uk, khilman@...aro.org,
	arnd@...db.de, olof@...om.net, xuwei5@...ilicon.com,
	haojian.zhuang@...aro.org, zhangfei.gao@...aro.org,
	bintian.wang@...wei.com, linux-kernel@...r.kernel.org,
	linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, yanhaifeng@...ilicon.com,
	yanghongwei@...ilicon.com, suwenping@...ilicon.com,
	ml.yang@...ilicon.com, gaofei@...ilicon.com,
	zhangzhenxing@...ilicon.com, xuejiancheng@...ilicon.com
Subject: Re: [PATCH v3 2/7] clk: hisilicon: add dt-binding document for
 Hi3519 CRG

On Fri, Dec 11, 2015 at 03:45:16PM +0800, Jiancheng Xue wrote:
> add dt-binding document for Hi3519 CRG block
> 
> Signed-off-by: Jiancheng Xue <xuejiancheng@...wei.com>
> ---
>  .../devicetree/bindings/clock/hi3519-crg.txt       | 46 ++++++++++++++++++++++
>  1 file changed, 46 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/clock/hi3519-crg.txt
> 
> diff --git a/Documentation/devicetree/bindings/clock/hi3519-crg.txt b/Documentation/devicetree/bindings/clock/hi3519-crg.txt
> new file mode 100644
> index 0000000..e0d30a4
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/hi3519-crg.txt
> @@ -0,0 +1,46 @@
> +* Hisilicon Hi3519 Clock and Reset Generator(CRG)
> +
> +The Hi3519 CRG module provides clock and reset signals to various
> +controllers within the SoC.
> +
> +This binding uses the following bindings:
> +    Documentation/devicetree/bindings/clock/clock-bindings.txt
> +    Documentation/devicetree/bindings/reset/reset.txt
> +
> +Required Properties:
> +
> +- compatible: should be one of the following.
> +  - "hisilicon,hi3519-crg" - controller compatible with Hi3519 SoC.
> +
> +- reg: physical base address of the controller and length of memory mapped
> +  region.
> +
> +- #clock-cells: should be 1.
> +
> +Each clock is assigned an identifier and client nodes use this identifier
> +to specify the clock which they consume.
> +
> +All these identifier could be found in <dt-bindings/clock/hi3519-clock.h>.

This header should be part of this patch.

> +
> +- #reset-cells: should be 2.
> +
> +A reset signal can be controlled by writing a bit register in the CRG module.
> +The reset specifier consists of two cells. The first cell represents the
> +register offset relative to the base address. The second cell represents the
> +bit index in the register.
> +
> +Example: CRG nodes
> +CRG: clock-reset-controller {

clock-reset-controller@...10000

> +	compatible = "hisilicon,hi3519-crg";
> +        reg = <0x12010000 0x10000>;
> +        #clock-cells = <1>;
> +        #reset-cells = <2>;
> +};
> +
> +Example: consumer nodes
> +i2c0: i2c@...2110000 {

Drop '0x'

> +	compatible = "hisilicon,hi3519-i2c";
> +        reg = <0x12110000 0x1000>;
> +        clocks = <&CRG HI3519_I2C0_RST>;*/
> +        resets = <&CRG 0xE4 0>;

lowercase hex please

> +};
> -- 
> 1.9.1
> 
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