linux-kernel - Re: [PATCH 1/2] media: dt-bindings: media: i2c: document OV4689 DT bindings

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Date:   Fri, 15 Jul 2022 00:43:04 +0300
From:   Mikhail Rudenko <mike.rudenko@...il.com>
To:     Sakari Ailus <sakari.ailus@....fi>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] media: dt-bindings: media: i2c: document OV4689 DT
 bindings


On 2022-07-15 at 00:11 +03, Sakari Ailus <sakari.ailus@....fi> wrote:

> Hi Mikhail,
>
> Thanks for the patch.
>
> On Tue, Jul 12, 2022 at 05:19:09PM +0300, Mikhail Rudenko wrote:
>> Add device-tree binding documentation for OV4689 image sensor driver,
>> and the relevant MAINTAINERS entries.
>>
>> Signed-off-by: Mikhail Rudenko <mike.rudenko@...il.com>
>> ---
>>  .../bindings/media/i2c/ovti,ov4689.yaml       | 122 ++++++++++++++++++
>>  MAINTAINERS                                   |   7 +
>>  2 files changed, 129 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/media/i2c/ovti,ov4689.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/media/i2c/ovti,ov4689.yaml b/Documentation/devicetree/bindings/media/i2c/ovti,ov4689.yaml
>> new file mode 100644
>> index 000000000000..6bdebe5862b4
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/media/i2c/ovti,ov4689.yaml
>> @@ -0,0 +1,122 @@
>> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/media/i2c/ovti,ov4689.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Omnivision OV4689 CMOS Sensor Device Tree Bindings
>> +
>> +maintainers:
>> +  - Mikhail Rudenko <mike.rudenko@...il.com>
>> +
>> +description: |-
>> +  The Omnivision OV4689 is a high performance, 1/3-inch, 4 megapixel
>> +  image sensor. Ihis chip supports high frame rate speeds up to 90 fps
>> +  at 2688x1520 resolution. It is programmable through an I2C
>> +  interface, and sensor output is sent via 1/2/4 lane MIPI CSI-2
>> +  connection.
>> +
>> +allOf:
>> +  - $ref: /schemas/media/video-interface-devices.yaml#
>> +
>> +properties:
>> +  compatible:
>> +    const: ovti,ov4689
>> +
>> +  reg:
>> +    maxItems: 1
>> +
>> +  clocks:
>> +    maxItems: 1
>> +
>> +  clock-names:
>> +    description:
>> +      External clock for the sensor.
>> +    items:
>> +      - const: xclk
>> +
>> +  dovdd-supply:
>> +    description:
>> +      Definition of the regulator used as Digital I/O voltage supply.
>> +
>> +  avdd-supply:
>> +    description:
>> +      Definition of the regulator used as Analog voltage supply.
>> +
>> +  dvdd-supply:
>> +    description:
>> +      Definition of the regulator used as Digital core voltage supply.
>> +
>> +  powerdown-gpios:
>> +    maxItems: 1
>> +    description:
>> +      Reference to the GPIO connected to the powerdown pin (active low).
>> +
>> +  reset-gpios:
>> +    maxItems: 1
>> +    description:
>> +      Reference to the GPIO connected to the reset pin (active low).
>> +
>> +  orientation: true
>> +
>> +  rotation: true
>> +
>> +  port:
>> +    $ref: /schemas/graph.yaml#/$defs/port-base
>> +    additionalProperties: false
>> +    description:
>> +      Output port node, single endpoint describing the CSI-2 transmitter.
>> +
>> +    properties:
>> +      endpoint:
>> +        $ref: /schemas/media/video-interfaces.yaml#
>> +        unevaluatedProperties: false
>
> The number of lanes is needed, please require data-lanes property here (as
> well as add it to the example).

Thanks for review, will fix in v2

>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - clocks
>> +  - clock-names
>> +  - dovdd-supply
>> +  - avdd-supply
>> +  - dvdd-supply
>> +  - powerdown-gpios
>> +  - reset-gpios
>> +  - port
>> +
>> +additionalProperties: false
>> +
>> +examples:
>> +  - |
>> +    #include <dt-bindings/gpio/gpio.h>
>> +
>> +    i2c {
>> +        #address-cells = <1>;
>> +        #size-cells = <0>;
>> +
>> +        ov4689: camera@36 {
>> +            compatible = "ovti,ov4689";
>> +            reg = <0x36>;
>> +
>> +            clocks = <&ov4689_clk>;
>> +            clock-names = "xclk";
>> +
>> +            avdd-supply = <&ov4689_avdd>;
>> +            dovdd-supply = <&ov4689_dovdd>;
>> +            dvdd-supply = <&ov4689_dvdd>;
>> +
>> +            powerdown-gpios = <&pio 107 GPIO_ACTIVE_LOW>;
>> +            reset-gpios = <&pio 109 GPIO_ACTIVE_LOW>;
>> +
>> +            orientation = <2>;
>> +            rotation = <0>;
>> +
>> +            port {
>> +                wcam_out: endpoint {
>> +                    remote-endpoint = <&mipi_in_wcam>;
>> +                };
>> +            };
>> +        };
>> +    };
>> +
>> +...
>> diff --git a/MAINTAINERS b/MAINTAINERS
>> index f468864fd268..63c4844f26e6 100644
>> --- a/MAINTAINERS
>> +++ b/MAINTAINERS
>> @@ -14523,6 +14523,13 @@ S:	Maintained
>>  T:	git git://linuxtv.org/media_tree.git
>>  F:	drivers/media/i2c/ov2740.c
>>
>> +OMNIVISION OV4689 SENSOR DRIVER
>> +M:	Mikhail Rudenko <mike.rudenko@...il.com>
>> +L:	linux-media@...r.kernel.org
>> +S:	Maintained
>> +T:	git git://linuxtv.org/media_tree.git
>> +F:	Documentation/devicetree/bindings/media/i2c/ovti,ov4689.yaml
>> +
>>  OMNIVISION OV5640 SENSOR DRIVER
>>  M:	Steve Longerbeam <slongerbeam@...il.com>
>>  L:	linux-media@...r.kernel.org


--
Best regards,
Mikhail Rudenko