[PATCH v3 5/9] media: dt-bindings: ov5645: Convert OV5645 binding to a schema

From: Prabhakar
Date: Wed Oct 26 2022 - 09:07:37 EST

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>

Convert the simple OV5645 Device Tree binding to json-schema.

The previous binding marked the below properties as required which was a
driver requirement and not the device requirement so just drop them from
the required list during the conversion.
- clock-frequency
- enable-gpios
- reset-gpios

Also drop the "clock-names" property as we have a single clock source for
the sensor and the driver has been updated to drop the clk referencing by
name.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
---
Resend v3:
* No change

v2 -> v3
* Dropped clock-names property
* Marked power supplies as mandatory
* Dropped the comment for voltage power supplies
* Included RB tag from Laurent
* Driver change to drop clock-names [0]

[0] https://lore.kernel.org/linux-media/Yyh%2F3uzOJOu3drEB@xxxxxxxxxxxxxxxxxxxxxxxxxx/T/#t

v1 -> v2
* Dropped ref to video-interface-devices.yaml#
* Dropped driver specific required items from the list
* Updated commit message
* Dropped clock-lanes and bus-type from the port and example node
* Marked data-lanes as required in port node
---
.../devicetree/bindings/media/i2c/ov5645.txt | 54 ---------
.../bindings/media/i2c/ovti,ov5645.yaml | 104 ++++++++++++++++++
2 files changed, 104 insertions(+), 54 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/media/i2c/ov5645.txt
create mode 100644 Documentation/devicetree/bindings/media/i2c/ovti,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 72ad992f77be..000000000000
--- a/Documentation/devicetree/bindings/media/i2c/ov5645.txt
+++ /dev/null
@@ -1,54 +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".
-- clock-frequency: Frequency of the xclk clock.
-- 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";
- clock-frequency = <24000000>;
-
- 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/ovti,ov5645.yaml b/Documentation/devicetree/bindings/media/i2c/ovti,ov5645.yaml
new file mode 100644
index 000000000000..0b10483cd267
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/ovti,ov5645.yaml
@@ -0,0 +1,104 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/i2c/ovti,ov5645.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: OmniVision OV5645 Image Sensor Device Tree Bindings
+
+maintainers:
+ - Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
+
+properties:
+ compatible:
+ const: ovti,ov5645
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ description: XCLK Input Clock
+
+ clock-frequency:
+ description: Frequency of the xclk clock in Hz.
+
+ vdda-supply:
+ description: Analog voltage supply, 2.8 volts
+
+ vddd-supply:
+ description: Digital core voltage supply, 1.5 volts
+
+ vdddo-supply:
+ description: Digital I/O voltage supply, 1.8 volts
+
+ enable-gpios:
+ maxItems: 1
+ description:
+ Reference to the GPIO connected to the PWDNB pin, if any.
+
+ reset-gpios:
+ maxItems: 1
+ description:
+ Reference to the GPIO connected to the RESETB pin, if any.
+
+ port:
+ description: Digital Output Port
+ $ref: /schemas/graph.yaml#/$defs/port-base
+ additionalProperties: false
+
+ properties:
+ endpoint:
+ $ref: /schemas/media/video-interfaces.yaml#
+ unevaluatedProperties: false
+
+ properties:
+ data-lanes:
+ minItems: 1
+ maxItems: 2
+ items:
+ enum: [1, 2]
+
+ required:
+ - data-lanes
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - vdddo-supply
+ - vdda-supply
+ - vddd-supply
+ - port
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ camera@3c {
+ compatible = "ovti,ov5645";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_ov5645>;
+ reg = <0x3c>;
+ clocks = <&clks 1>;
+ clock-frequency = <24000000>;
+ vdddo-supply = <&ov5645_vdddo_1v8>;
+ vdda-supply = <&ov5645_vdda_2v8>;
+ vddd-supply = <&ov5645_vddd_1v5>;
+ enable-gpios = <&gpio1 19 GPIO_ACTIVE_HIGH>;
+ reset-gpios = <&gpio1 20 GPIO_ACTIVE_LOW>;
+
+ port {
+ ov5645_ep: endpoint {
+ remote-endpoint = <&csi0_ep>;
+ data-lanes = <1 2>;
+ };
+ };
+ };
+ };
+...
--
2.25.1