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Message-ID: <9AF47749-12CB-40D5-A300-170A35390CFD@z3ntu.xyz>
Date: Fri, 31 Mar 2023 11:18:29 +0200
From: Luca Weiss <luca@...tu.xyz>
To: Sakari Ailus <sakari.ailus@....fi>
CC: ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Shunqian Zheng <zhengsq@...k-chips.com>,
Jacopo Mondi <jacopo.mondi@...asonboard.com>,
linux-media@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org,
Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: Re: [PATCH v4 2/3] media: dt-bindings: ov2685: convert to dtschema
Hi Sakari,
Sakari Ailus <sakari.ailus@....fi> schreef op 31 maart 2023 10:39:16 CEST:
>Hi Luca,
>
>Thanks for the patch.
>
>On Thu, Mar 23, 2023 at 06:57:50PM +0100, Luca Weiss wrote:
>> Convert the text-based dt-bindings to yaml.
>>
>> Changes from original txt:
>> * Take wording for various properties from other yaml bindings, this
>> removes e.g. volt amount from schema since it isn't really relevant
>> and the datasheet is a better source.
>> * Don't make reset-gpios a required property since it can be tied to
>> DOVDD instead.
>>
>> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
>> Signed-off-by: Luca Weiss <luca@...tu.xyz>
>> ---
>> .../devicetree/bindings/media/i2c/ov2685.txt | 41 ---------
>> .../devicetree/bindings/media/i2c/ovti,ov2685.yaml | 101 +++++++++++++++++++++
>> MAINTAINERS | 1 +
>> 3 files changed, 102 insertions(+), 41 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/media/i2c/ov2685.txt b/Documentation/devicetree/bindings/media/i2c/ov2685.txt
>> deleted file mode 100644
>> index 625c4a8c0d53d..0000000000000
>> --- a/Documentation/devicetree/bindings/media/i2c/ov2685.txt
>> +++ /dev/null
>> @@ -1,41 +0,0 @@
>> -* Omnivision OV2685 MIPI CSI-2 sensor
>> -
>> -Required Properties:
>> -- compatible: shall be "ovti,ov2685"
>> -- 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, 1.8 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 "<1>".
>> -
>> -Example:
>> -&i2c7 {
>> - ov2685: camera-sensor@3c {
>> - compatible = "ovti,ov2685";
>> - reg = <0x3c>;
>> - pinctrl-names = "default";
>> - pinctrl-0 = <&clk_24m_cam>;
>> -
>> - clocks = <&cru SCLK_TESTCLKOUT1>;
>> - clock-names = "xvclk";
>> -
>> - avdd-supply = <&pp2800_cam>;
>> - dovdd-supply = <&pp1800>;
>> - dvdd-supply = <&pp1800>;
>> - reset-gpios = <&gpio2 3 GPIO_ACTIVE_LOW>;
>> -
>> - port {
>> - ucam_out: endpoint {
>> - remote-endpoint = <&mipi_in_ucam>;
>> - data-lanes = <1>;
>> - };
>> - };
>> - };
>> -};
>> diff --git a/Documentation/devicetree/bindings/media/i2c/ovti,ov2685.yaml b/Documentation/devicetree/bindings/media/i2c/ovti,ov2685.yaml
>> new file mode 100644
>> index 0000000000000..2ac0ca8a0413b
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/media/i2c/ovti,ov2685.yaml
>> @@ -0,0 +1,101 @@
>> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/media/i2c/ovti,ov2685.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: OmniVision OV2685 Image Sensor
>> +
>> +maintainers:
>> + - Shunqian Zheng <zhengsq@...k-chips.com>
>> +
>> +properties:
>> + compatible:
>> + const: ovti,ov2685
>> +
>> + reg:
>> + maxItems: 1
>> +
>> + clocks:
>> + items:
>> + - description: XVCLK clock
>> +
>> + clock-names:
>> + items:
>> + - const: xvclk
>> +
>> + dvdd-supply:
>> + description: Digital Domain Power Supply
>> +
>> + avdd-supply:
>> + description: Analog Domain Power Supply
>> +
>> + dovdd-supply:
>> + description: I/O Domain Power Supply
>> +
>> + reset-gpios:
>> + maxItems: 1
>> + description: Reset Pin GPIO Control (active low)
>> +
>> + port:
>> + description: MIPI CSI-2 transmitter port
>> + $ref: /schemas/graph.yaml#/$defs/port-base
>> + additionalProperties: false
>> +
>> + properties:
>> + endpoint:
>> + $ref: /schemas/media/video-interfaces.yaml#
>> + unevaluatedProperties: false
>> +
>> + properties:
>> + data-lanes:
>> + maxItems: 1
>
>This should be 2 --- the sensor supports two lanes (even if the driver
>doesn't).
Right, for some reason the product brief mentions that it features "a single-lane MIPI interface" but the datasheet I have writes that it has a 2-lane MIPI serial output, so I guess it does support two lanes?
>
>I can address this when applying if that's ok.
That would be nice, thanks!
Regards
Luca
>
>> +
>> + required:
>> + - data-lanes
>> +
>> +required:
>> + - compatible
>> + - reg
>> + - clocks
>> + - clock-names
>> + - dvdd-supply
>> + - avdd-supply
>> + - dovdd-supply
>> + - port
>> +
>> +additionalProperties: false
>> +
>> +examples:
>> + - |
>> + #include <dt-bindings/clock/rk3399-cru.h>
>> + #include <dt-bindings/gpio/gpio.h>
>> +
>> + i2c {
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> +
>> + ov2685: camera-sensor@3c {
>> + compatible = "ovti,ov2685";
>> + reg = <0x3c>;
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&clk_24m_cam>;
>> +
>> + clocks = <&cru SCLK_TESTCLKOUT1>;
>> + clock-names = "xvclk";
>> +
>> + avdd-supply = <&pp2800_cam>;
>> + dovdd-supply = <&pp1800>;
>> + dvdd-supply = <&pp1800>;
>> + reset-gpios = <&gpio2 3 GPIO_ACTIVE_LOW>;
>> +
>> + port {
>> + ucam_out: endpoint {
>> + remote-endpoint = <&mipi_in_ucam>;
>> + data-lanes = <1>;
>> + };
>> + };
>> + };
>> + };
>> +
>> +...
>> diff --git a/MAINTAINERS b/MAINTAINERS
>> index 8ea325040f355..5904f47756fe1 100644
>> --- a/MAINTAINERS
>> +++ b/MAINTAINERS
>> @@ -15410,6 +15410,7 @@ M: Shunqian Zheng <zhengsq@...k-chips.com>
>> L: linux-media@...r.kernel.org
>> S: Maintained
>> T: git git://linuxtv.org/media_tree.git
>> +F: Documentation/devicetree/bindings/media/i2c/ovti,ov2685.yaml
>> F: drivers/media/i2c/ov2685.c
>>
>> OMNIVISION OV2740 SENSOR DRIVER
>>
>
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