[V1,1/2] media: dt-bindings: media: i2c: Add bindings for ov8856
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Message ID 20190808092215.5608-2-dongchun.zhu@mediatek.com
State Changes Requested
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Series
  • media: ov8856: DT bindings and sensor mode improvements
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Commit Message

Dongchun Zhu Aug. 8, 2019, 9:22 a.m. UTC
From: Dongchun Zhu <dongchun.zhu@mediatek.com>

Add device tree binding documentation for the ov8856 camera sensor.

Signed-off-by: Dongchun Zhu <dongchun.zhu@mediatek.com>
---
 .../devicetree/bindings/media/i2c/ov8856.txt       | 41 ++++++++++++++++++++++
 MAINTAINERS                                        |  1 +
 2 files changed, 42 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/i2c/ov8856.txt

Comments

Sakari Ailus Aug. 8, 2019, 4:54 p.m. UTC | #1
Hi Dongchun,

(Cc'ing Ben, too.)

On Thu, Aug 08, 2019 at 05:22:14PM +0800, dongchun.zhu@mediatek.com wrote:
> From: Dongchun Zhu <dongchun.zhu@mediatek.com>
> 
> Add device tree binding documentation for the ov8856 camera sensor.
> 
> Signed-off-by: Dongchun Zhu <dongchun.zhu@mediatek.com>
> ---
>  .../devicetree/bindings/media/i2c/ov8856.txt       | 41 ++++++++++++++++++++++
>  MAINTAINERS                                        |  1 +
>  2 files changed, 42 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/media/i2c/ov8856.txt
> 
> diff --git a/Documentation/devicetree/bindings/media/i2c/ov8856.txt b/Documentation/devicetree/bindings/media/i2c/ov8856.txt
> new file mode 100644
> index 0000000..96b10e0
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/i2c/ov8856.txt
> @@ -0,0 +1,41 @@
> +* Omnivision OV8856 MIPI CSI-2 sensor
> +
> +Required Properties:
> +- compatible: shall be "ovti,ov8856"
> +- clocks: reference to the xvclk input clock
> +- clock-names: shall be "xvclk"

Could you add "clock-frequency" property here, please, and specify the
upper and lower limits?

> +- avdd-supply: Analog voltage supply, 2.8 volts
> +- dovdd-supply: Digital I/O voltage supply, 1.8 volts
> +- dvdd-supply: Digital core voltage supply, 1.2 volts
> +- reset-gpios: Low active reset gpio
> +
> +The device node shall contain one 'port' child node with an
> +'endpoint' subnode for its digital output video port,
> +in accordance with the video interface bindings defined in
> +Documentation/devicetree/bindings/media/video-interfaces.txt.
> +The endpoint optional property 'data-lanes' shall be "<0 1 3 4>".

If you don't support lane reordering, then monotonically incrementing lane
numbers from 1 onwards are recommended.

Please also make the property mandatory.

> +
> +Example:
> +&i2c7 {
> +	ov8856: camera-sensor@10 {
> +		compatible = "ovti,ov8856";
> +		reg = <0x10>;
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&clk_24m_cam>;
> +
> +		clocks = <&cru SCLK_TESTCLKOUT1>;
> +		clock-names = "xvclk";
> +
> +		avdd-supply = <&mt6358_vcama2_reg>;
> +		dvdd-supply = <&mt6358_vcamd_reg>;
> +		dovdd-supply = <&mt6358_vcamio_reg>;
> +		reset-gpios = <&gpio2 3 GPIO_ACTIVE_LOW>;
> +
> +		port {
> +			wcam_out: endpoint {
> +				remote-endpoint = <&mipi_in_wcam>;
> +				data-lanes = <0 1 3 4>;
> +			};
> +		};
> +	};
> +};
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 783569e..7746c6b 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -11889,6 +11889,7 @@ L:	linux-media@vger.kernel.org
>  T:	git git://linuxtv.org/media_tree.git
>  S:	Maintained
>  F:	drivers/media/i2c/ov8856.c
> +F:	Documentation/devicetree/bindings/media/i2c/ov8856.txt
>  
>  OMNIVISION OV9650 SENSOR DRIVER
>  M:	Sakari Ailus <sakari.ailus@linux.intel.com>
Sakari Ailus Aug. 13, 2019, 11:55 a.m. UTC | #2
On Thu, Aug 08, 2019 at 07:54:16PM +0300, Sakari Ailus wrote:
> Hi Dongchun,
> 
> (Cc'ing Ben, too.)
> 
> On Thu, Aug 08, 2019 at 05:22:14PM +0800, dongchun.zhu@mediatek.com wrote:
> > From: Dongchun Zhu <dongchun.zhu@mediatek.com>
> > 
> > Add device tree binding documentation for the ov8856 camera sensor.
> > 
> > Signed-off-by: Dongchun Zhu <dongchun.zhu@mediatek.com>
> > ---
> >  .../devicetree/bindings/media/i2c/ov8856.txt       | 41 ++++++++++++++++++++++
> >  MAINTAINERS                                        |  1 +
> >  2 files changed, 42 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/media/i2c/ov8856.txt
> > 
> > diff --git a/Documentation/devicetree/bindings/media/i2c/ov8856.txt b/Documentation/devicetree/bindings/media/i2c/ov8856.txt
> > new file mode 100644
> > index 0000000..96b10e0
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/media/i2c/ov8856.txt
> > @@ -0,0 +1,41 @@
> > +* Omnivision OV8856 MIPI CSI-2 sensor
> > +
> > +Required Properties:
> > +- compatible: shall be "ovti,ov8856"
> > +- clocks: reference to the xvclk input clock
> > +- clock-names: shall be "xvclk"
> 
> Could you add "clock-frequency" property here, please, and specify the
> upper and lower limits?

Can you also add the link-frequencies property, please?

Patch
diff mbox series

diff --git a/Documentation/devicetree/bindings/media/i2c/ov8856.txt b/Documentation/devicetree/bindings/media/i2c/ov8856.txt
new file mode 100644
index 0000000..96b10e0
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/ov8856.txt
@@ -0,0 +1,41 @@ 
+* Omnivision OV8856 MIPI CSI-2 sensor
+
+Required Properties:
+- compatible: shall be "ovti,ov8856"
+- clocks: reference to the xvclk input clock
+- clock-names: shall be "xvclk"
+- avdd-supply: Analog voltage supply, 2.8 volts
+- dovdd-supply: Digital I/O voltage supply, 1.8 volts
+- dvdd-supply: Digital core voltage supply, 1.2 volts
+- reset-gpios: Low active reset gpio
+
+The device node shall contain one 'port' child node with an
+'endpoint' subnode for its digital output video port,
+in accordance with the video interface bindings defined in
+Documentation/devicetree/bindings/media/video-interfaces.txt.
+The endpoint optional property 'data-lanes' shall be "<0 1 3 4>".
+
+Example:
+&i2c7 {
+	ov8856: camera-sensor@10 {
+		compatible = "ovti,ov8856";
+		reg = <0x10>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&clk_24m_cam>;
+
+		clocks = <&cru SCLK_TESTCLKOUT1>;
+		clock-names = "xvclk";
+
+		avdd-supply = <&mt6358_vcama2_reg>;
+		dvdd-supply = <&mt6358_vcamd_reg>;
+		dovdd-supply = <&mt6358_vcamio_reg>;
+		reset-gpios = <&gpio2 3 GPIO_ACTIVE_LOW>;
+
+		port {
+			wcam_out: endpoint {
+				remote-endpoint = <&mipi_in_wcam>;
+				data-lanes = <0 1 3 4>;
+			};
+		};
+	};
+};
diff --git a/MAINTAINERS b/MAINTAINERS
index 783569e..7746c6b 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -11889,6 +11889,7 @@  L:	linux-media@vger.kernel.org
 T:	git git://linuxtv.org/media_tree.git
 S:	Maintained
 F:	drivers/media/i2c/ov8856.c
+F:	Documentation/devicetree/bindings/media/i2c/ov8856.txt
 
 OMNIVISION OV9650 SENSOR DRIVER
 M:	Sakari Ailus <sakari.ailus@linux.intel.com>