linux-kernel - Re: [PATCH V5 7/7] dt-bindings: add document for dw-hdmi

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Date:	Mon, 10 Nov 2014 17:59:01 +0800
From:	Andy Yan <andy.yan@...k-chips.com>
To:	Zubair Lutfullah Kakakhel <Zubair.Kakakhel@...tec.com>,
	airlied@...ux.ie, heiko@...ech.de, fabio.estevam@...escale.com,
	rmk+kernel@....linux.org.uk
CC:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Shawn Guo <shawn.guo@...aro.org>,
	Josh Boyer <jwboyer@...hat.com>,
	Sean Paul <seanpaul@...omium.org>,
	Inki Dae <inki.dae@...sung.com>,
	Dave Airlie <airlied@...hat.com>,
	Arnd Bergmann <arnd@...db.de>,
	Lucas Stach <l.stach@...gutronix.de>, djkurtz@...gle.com,
	ykk@...k-chips.com, linux-kernel@...r.kernel.org,
	dri-devel@...ts.freedesktop.org, devel@...verdev.osuosl.org,
	devicetree@...r.kernel.org, linux-rockchip@...ts.infradead.org,
	jay.xu@...k-chips.com
Subject: Re: [PATCH V5 7/7] dt-bindings: add document for dw-hdmi


On 2014年11月10日 17:53, Zubair Lutfullah Kakakhel wrote:
>
> On 10/11/14 09:44, Andy Yan wrote:
>> Hi ZubairLK
>> On 2014年11月10日 17:17, Zubair Lutfullah Kakakhel wrote:
>>> Nice work.
>>>
>>> This patch should move the binding from
>>>
>>> Documentation/devicetree/bindings/staging/imx-drm/hdmi.txt
>>> to the location instead of making a new file and leaving the old
>>> one in place.
>>>
>>> And use git format-patch -M to highlight any changes.
>>>
>>> Regards
>>> ZubairLK
>>     I add these bindings for dw-hdmi core, because
>>    properities like reg, interrupts, ddc-i2c-bus, reg-io-width are used
>>    by dw-hdmi core, but properities like compatible, gpr,clk, are platform
>>    specific , they are handled by the platform code like dw_hdmi-imx.c
>>    and described in platform specific dt binds like /imx-drm/hdmi.txt
> I understand.
>
> Are there any changes to imx-drm/hdmi.txt?
>
> Some properties for imx-drm/hdmi.txt would become optional/inherited from the parent hdmi drm binding?
>
> The changes should be highlighted in the commit message. Or we'll
> be confused which is which..
>
> ZubairLK
>
   to keep   compatible for imx, no changes for imx-drm/hdmi.txt
   the only added properties  is reg-io-width, and it is optional
>>> On 08/11/14 05:32, Andy Yan wrote:
>>>> Signed-off-by: Andy Yan <andy.yan@...k-chips.com>
>>>> ---
>>>>    .../devicetree/bindings/drm/bridge/dw-hdmi.txt     | 38 ++++++++++++++++++++++
>>>>    1 file changed, 38 insertions(+)
>>>>    create mode 100644 Documentation/devicetree/bindings/drm/bridge/dw-hdmi.txt
>>>>
>>>> diff --git a/Documentation/devicetree/bindings/drm/bridge/dw-hdmi.txt b/Documentation/devicetree/bindings/drm/bridge/dw-hdmi.txt
>>>> new file mode 100644
>>>> index 0000000..aa7ed17
>>>> --- /dev/null
>>>> +++ b/Documentation/devicetree/bindings/drm/bridge/dw-hdmi.txt
>>>> @@ -0,0 +1,38 @@
>>>> +DesignWare HDMI bridge bindings
>>>> +
>>>> +Required properities:
>>>> +- compatibel: platform specific such as "fsl,imx6q-hdmi","fsl,imx6dl-hdmi"
> spellcheck. compatible
>
>>>> +          "rockchip,rk3288-dw-hdmi"
>>>> +- reg: physical base address of the controller and length
>>>> +- ddc-i2c-bus: the ddc i2c bus
>>>> +- interrupts: The interrupt number to the cpu
>>>> +
>>>> +Optional properties
>>>> +- reg-io-width: the width of the reg:1,4, default set to 1 if not present
>>>> +
>>>> +Example:
>>>> +    hdmi: hdmi@...0000 {
>>>> +        compatible = "fsl,imx6q-hdmi";
>>>> +        reg = <0x00120000 0x9000>;
>>>> +        interrupts = <0 115 0x04>;
>>>> +        gpr = <&gpr>;
>>>> +        clocks = <&clks 123>, <&clks 124>;
>>>> +        clock-names = "iahb", "isfr";
>>>> +        ddc-i2c-bus = <&i2c2>;
>>>> +
>>>> +        port@0 {
>>>> +            reg = <0>;
>>>> +
>>>> +            hdmi_mux_0: endpoint {
>>>> +                remote-endpoint = <&ipu1_di0_hdmi>;
>>>> +            };
>>>> +        };
>>>> +
>>>> +        port@1 {
>>>> +            reg = <1>;
>>>> +
>>>> +            hdmi_mux_1: endpoint {
>>>> +                remote-endpoint = <&ipu1_di1_hdmi>;
>>>> +            };
>>>> +        };
>>>> +    };
>>>>
>>>
>>
>
>


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