Re: [PATCH v5 5/5] media: dt-bindings: media: i2c: convert ov5645 bindings to json-schema

Lad, Prabhakar
2020-04-07T07:46:38Z

Hi Laurent,

Thank you for the review.

On Mon, Apr 6, 2020 at 6:43 PM Laurent Pinchart
<laurent.pinchart@ideasonboard.com> wrote:
>
> Hi Prabhakar,
>
> Thank you for the patch.
>
> On Mon, Apr 06, 2020 at 05:42:41PM +0100, Lad Prabhakar wrote:
> > Convert ov5645 bindings to json-schema.
> >
> > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
> > ---
> > .../devicetree/bindings/media/i2c/ov5645.txt | 52 --------
> > .../devicetree/bindings/media/i2c/ov5645.yaml | 126 ++++++++++++++++++
> > 2 files changed, 126 insertions(+), 52 deletions(-)
> > delete mode 100644 Documentation/devicetree/bindings/media/i2c/ov5645.txt
> > create mode 100644 Documentation/devicetree/bindings/media/i2c/ov5645.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/media/i2c/ov5645.txt b/Documentation/devicetree/bindings/media/i2c/ov5645.txt
> > deleted file mode 100644
> > index a55bb728ea48..000000000000
> > --- a/Documentation/devicetree/bindings/media/i2c/ov5645.txt
> > +++ /dev/null
> > @@ -1,52 +0,0 @@
> > -* Omnivision 1/4-Inch 5Mp CMOS Digital Image Sensor
> > -
> > -The Omnivision OV5645 is a 1/4-Inch CMOS active pixel digital image sensor with
> > -an active array size of 2592H x 1944V. It is programmable through a serial I2C
> > -interface.
> > -
> > -Required Properties:
> > -- compatible: Value should be "ovti,ov5645".
> > -- clocks: Reference to the xclk clock.
> > -- clock-names: Should be "xclk".
> > -- enable-gpios: Chip enable GPIO. Polarity is GPIO_ACTIVE_HIGH. This corresponds
> > - to the hardware pin PWDNB which is physically active low.
> > -- reset-gpios: Chip reset GPIO. Polarity is GPIO_ACTIVE_LOW. This corresponds to
> > - the hardware pin RESETB.
> > -- vdddo-supply: Chip digital IO regulator.
> > -- vdda-supply: Chip analog regulator.
> > -- vddd-supply: Chip digital core regulator.
> > -
> > -The device node must contain one 'port' child node for its digital output
> > -video port, in accordance with the video interface bindings defined in
> > -Documentation/devicetree/bindings/media/video-interfaces.txt.
> > -
> > -Example:
> > -
> > - &i2c1 {
> > - ...
> > -
> > - ov5645: ov5645@3c {
> > - compatible = "ovti,ov5645";
> > - reg = <0x3c>;
> > -
> > - enable-gpios = <&gpio1 6 GPIO_ACTIVE_HIGH>;
> > - reset-gpios = <&gpio5 20 GPIO_ACTIVE_LOW>;
> > - pinctrl-names = "default";
> > - pinctrl-0 = <&camera_rear_default>;
> > -
> > - clocks = <&clks 200>;
> > - clock-names = "xclk";
> > -
> > - vdddo-supply = <&camera_dovdd_1v8>;
> > - vdda-supply = <&camera_avdd_2v8>;
> > - vddd-supply = <&camera_dvdd_1v2>;
> > -
> > - port {
> > - ov5645_ep: endpoint {
> > - clock-lanes = <1>;
> > - data-lanes = <0 2>;
> > - remote-endpoint = <&csi0_ep>;
> > - };
> > - };
> > - };
> > - };
> > diff --git a/Documentation/devicetree/bindings/media/i2c/ov5645.yaml b/Documentation/devicetree/bindings/media/i2c/ov5645.yaml
> > new file mode 100644
> > index 000000000000..d5cdcf9a1c76
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/media/i2c/ov5645.yaml
> > @@ -0,0 +1,126 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/media/i2c/ov5645.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Omnivision 1/4-Inch 5MP CMOS Digital Image Sensor
> > +
> > +maintainers:
> > + - Sakari Ailus <sakari.ailus@linux.intel.com>
> > + - Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
> > +
> > +description: |-
> > + The Omnivision OV5645 is a 1/4-Inch CMOS active pixel digital image sensor with
> > + an active array size of 2592H x 1944V. It is programmable through a serial I2C
> > + interface.
> > +
> > +properties:
> > + compatible:
> > + const: ovti,ov5645
> > +
> > + reg:
> > + description: I2C device address
> > + maxItems: 1
> > +
> > + clocks:
> > + description: External clock frequency should range between 6MHz to 27MHz.
> > + maxItems: 1
> > +
> > + clock-names:
> > + items:
> > + - const: xclk
> > +
> > + enable-gpios:
> > + description: |-
> > + Chip enable GPIO. This corresponds to the hardware pin PWDNB which is
> > + physically active low.
> > +
> > + reset-gpios:
> > + description: Chip reset GPIO. This corresponds to the hardware pin RESETB.
> > +
> > + vdddo-supply:
> > + description: Chip digital IO regulator.
> > +
> > + vdda-supply:
> > + description: Chip analog regulator.
> > +
> > + vddd-supply:
> > + description: Chip digital core regulator.
> > +
> > + # See ../video-interfaces.txt for more details
> > + port:
> > + type: object
> > + properties:
> > + endpoint:
> > + type: object
> > +
> > + properties:
> > + data-lanes:
>
> Don't you need
>
> minItems: 1
> maxItems: 2
>
> here ?
>
Agreed will add that.

> > + description: |-
> > + The sensor supports either one-lane, or two-lane operation.
> > + For one-lane operation the property must be set to <1> and
> > + for two-lane operation the property must be set to <1 2>.
> > + items:
> > + - const: 1
> > + - const: 2
> > +
> > + clock-lanes:
>
> Same here,
>
> maxItems: 1
>
> ?
>
As above.

> > + description:
> > + should be set to <0> (clock lane on hardware lane 0).
>
> I think you can drop the description, with the items below it's clear
> that the value has to be <0>.
>
OK

> > + items:
> > + - const: 0
> > +
> > + remote-endpoint: true
>
> Should this be
>
> remote-endpoint:
> $ref: /schemas/types.yaml#/definitions/phandle
>
OK shall replace it.

Cheers,
--Prabhakar

> > +
> > + required:
> > + - data-lanes
> > + - clock-lanes
> > + - remote-endpoint
> > +
> > + additionalProperties: false
> > +
> > + additionalProperties: false
> > +
> > +required:
> > + - compatible
> > + - reg
> > + - clocks
> > + - clock-names
> > + - enable-gpios
> > + - reset-gpios
> > + - vdddo-supply
> > + - vdda-supply
> > + - vddd-supply
> > + - port
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > + - |
> > + i2c {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > +
> > + ov5645: sensor@3c {
> > + compatible = "ovti,ov5645";
> > + reg = <0x3c>;
> > + clocks = <&ov5645_cl>;
> > + clock-names = "xclk";
> > + enable-gpios = <&gpio1 6 /* GPIO_ACTIVE_HIGH */>;
> > + reset-gpios = <&gpio5 20 /* GPIO_ACTIVE_LOW */>;
> > + vdddo-supply = <&camera_dovdd_1v8>;
> > + vdda-supply = <&camera_avdd_2v8>;
> > + vddd-supply = <&camera_dvdd_1v2>;
> > +
> > + port {
> > + ov5645_0: endpoint {
> > + remote-endpoint = <&csi1_ep>;
> > + clock-lanes = <0>;
> > + data-lanes = <1 2>;
> > + };
> > + };
> > + };
> > + };
> > +
> > +...
>
> --
> Regards,
>
> Laurent Pinchart