[v3,1/2] dt-bindings: pwm: add MediaTek display PWM bindings

Document the device-tree binding of MediatTek display PWM.
The clock "main" and "mm" are used to generate PWM signals.
The PWM has one channel to control the backlight brightness for display.
It supports MT8173 and MT6595.

Change-Id: I194ca88b4e4cd01a28b8701e07e86ea6941e5292
Signed-off-by: YH Huang <yh.huang@mediatek.com>
---
 .../devicetree/bindings/pwm/pwm-mtk-disp.txt       | 24 ++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pwm/pwm-mtk-disp.txt

I am sorry for forgetting to remove Change-Id in [PATCH v3 1/2] and
[PATCH v3 1/2].

Regards,
YH Huang

On Mon, 2015-06-29 at 23:03 +0800, YH Huang wrote:
> Document the device-tree binding of MediatTek display PWM.
> The clock "main" and "mm" are used to generate PWM signals.
> The PWM has one channel to control the backlight brightness for display.
> It supports MT8173 and MT6595.
> 
> Change-Id: I194ca88b4e4cd01a28b8701e07e86ea6941e5292
> Signed-off-by: YH Huang <yh.huang@mediatek.com>
> ---
>  .../devicetree/bindings/pwm/pwm-mtk-disp.txt       | 24 ++++++++++++++++++++++
>  1 file changed, 24 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/pwm/pwm-mtk-disp.txt
> 
> diff --git a/Documentation/devicetree/bindings/pwm/pwm-mtk-disp.txt b/Documentation/devicetree/bindings/pwm/pwm-mtk-disp.txt
> new file mode 100644
> index 0000000..355b755
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pwm/pwm-mtk-disp.txt
> @@ -0,0 +1,24 @@
> +MediaTek display PWM controller
> +
> +Required properties:
> + - compatible: should be "mediatek,<name>-disp-pwm"
> +   - "mediatek,mt8173-disp-pwm": found on mt8173 SoC
> +   - "mediatek,mt6595-disp-pwm": found on mt6595 SoC
> + - reg: physical base address and length of the controller's registers
> + - #pwm-cells: must be 2. See pwm.txt in this directory for a description of
> +   the cell format
> + - clocks: phandle and clock specifier of the PWM reference clock
> + - clock-names: must contain the following
> +   - "main": clock used to generate PWM signals
> +   - "mm": sync signals from the modules of mmsys
> +
> +Example:
> +	pwm0: pwm@1401e000 {
> +		compatible = "mediatek,mt8173-disp-pwm",
> +			     "mediatek,mt6595-disp-pwm";
> +		reg = <0 0x1401e000 0 0x1000>;
> +		#pwm-cells = <2>;
> +		clocks = <&mmsys MM_DISP_PWM026M>,
> +			 <&mmsys MM_DISP_PWM0MM>;
> +		clock-names = "main", "mm";
> +	};


--
To unsubscribe from this list: send the line "unsubscribe linux-pwm" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

On Mon, Jun 29, 2015 at 11:24 PM, YH Huang <yh.huang@mediatek.com> wrote:
> I am sorry for forgetting to remove Change-Id in [PATCH v3 1/2] and
> [PATCH v3 1/2].
>
> Regards,
> YH Huang
>
> On Mon, 2015-06-29 at 23:03 +0800, YH Huang wrote:
>> Document the device-tree binding of MediatTek display PWM.
>> The clock "main" and "mm" are used to generate PWM signals.
>> The PWM has one channel to control the backlight brightness for display.
>> It supports MT8173 and MT6595.
>>
>> Change-Id: I194ca88b4e4cd01a28b8701e07e86ea6941e5292
>> Signed-off-by: YH Huang <yh.huang@mediatek.com>
>> ---
>>  .../devicetree/bindings/pwm/pwm-mtk-disp.txt       | 24 ++++++++++++++++++++++
>>  1 file changed, 24 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/pwm/pwm-mtk-disp.txt
>>
>> diff --git a/Documentation/devicetree/bindings/pwm/pwm-mtk-disp.txt b/Documentation/devicetree/bindings/pwm/pwm-mtk-disp.txt
>> new file mode 100644
>> index 0000000..355b755
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/pwm/pwm-mtk-disp.txt
>> @@ -0,0 +1,24 @@
>> +MediaTek display PWM controller
>> +
>> +Required properties:
>> + - compatible: should be "mediatek,<name>-disp-pwm"
>> +   - "mediatek,mt8173-disp-pwm": found on mt8173 SoC
>> +   - "mediatek,mt6595-disp-pwm": found on mt6595 SoC
>> + - reg: physical base address and length of the controller's registers
>> + - #pwm-cells: must be 2. See pwm.txt in this directory for a description of
>> +   the cell format
>> + - clocks: phandle and clock specifier of the PWM reference clock
>> + - clock-names: must contain the following
>> +   - "main": clock used to generate PWM signals
>> +   - "mm": sync signals from the modules of mmsys
>> +
>> +Example:
>> +     pwm0: pwm@1401e000 {
>> +             compatible = "mediatek,mt8173-disp-pwm",
>> +                          "mediatek,mt6595-disp-pwm";
>> +             reg = <0 0x1401e000 0 0x1000>;
>> +             #pwm-cells = <2>;
>> +             clocks = <&mmsys MM_DISP_PWM026M>,
>> +                      <&mmsys MM_DISP_PWM0MM>;

These should be CLK_MM_DISP...

Thanks!
-Dan

>> +             clock-names = "main", "mm";
>> +     };
>
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/
--
To unsubscribe from this list: send the line "unsubscribe linux-pwm" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html