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

Laurent Pinchart
2020-04-06T17:43:59Z

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 ?

> + 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

?

> + 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>.

> + items:
> + - const: 0
> +
> + remote-endpoint: true

Should this be

remote-endpoint:
$ref: /schemas/types.yaml#/definitions/phandle

> +
> + 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