linux-kernel - [PATCH v6 5/6] media: dt-bindings: ov5693: document YAML binding

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Message-Id: <20220712163349.1308540-6-tommaso.merciai@amarulasolutions.com>
Date:   Tue, 12 Jul 2022 18:33:48 +0200
From:   Tommaso Merciai <tommaso.merciai@...rulasolutions.com>
To:     tommaso.merciai@...rulasolutions.com
Cc:     linuxfancy@...glegroups.com, linux-amarula@...rulasolutions.com,
        quentin.schulz@...obroma-systems.com,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Daniel Scally <djrscally@...il.com>,
        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: [PATCH v6 5/6] media: dt-bindings: ov5693: document YAML binding

Add documentation of device tree in YAML schema for the OV5693
CMOS image sensor from Omnivision

Signed-off-by: Tommaso Merciai <tommaso.merciai@...rulasolutions.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
Changes since v1:
 - Fix allOf position as suggested by Krzysztof
 - Remove port description as suggested by Krzysztof
 - Fix EOF as suggested by Krzysztof

Changes since v2:
 - Fix commit body as suggested by Krzysztof

Changes since v3:
 - Add reviewed-by tags, suggested by Jacopo, Krzysztof

Changes since v4:
 - Remove wrong Sakari reviewed-by tag, suggested by Krzysztof, Sakari

Changes since v5:
 - Remove dovdd-supply, avdd-supply, dvdd-supply from required properties
as suggested by Jacopo

 .../bindings/media/i2c/ovti,ov5693.yaml       | 103 ++++++++++++++++++
 MAINTAINERS                                   |   1 +
 2 files changed, 104 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/i2c/ovti,ov5693.yaml

diff --git a/Documentation/devicetree/bindings/media/i2c/ovti,ov5693.yaml b/Documentation/devicetree/bindings/media/i2c/ovti,ov5693.yaml
new file mode 100644
index 000000000000..8974a2c746a7
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/ovti,ov5693.yaml
@@ -0,0 +1,103 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (c) 2022 Amarulasolutions
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/i2c/ovti,ov5693.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Omnivision OV5693 CMOS Sensor
+
+maintainers:
+  - Tommaso Merciai <tommaso.merciai@...rulasolutions.com>
+
+description: |
+  The Omnivision OV5693 is a high performance, 1/4-inch, 5 megapixel, CMOS
+  image sensor that delivers 2592x1944 at 30fps. It provides full-frame,
+  sub-sampled, and windowed 10-bit MIPI images in various formats via the
+  Serial Camera Control Bus (SCCB) interface.
+
+  OV5693 is controlled via I2C and two-wire Serial Camera Control Bus (SCCB).
+  The sensor output is available via CSI-2 serial data output (up to 2-lane).
+
+allOf:
+  - $ref: /schemas/media/video-interface-devices.yaml#
+
+properties:
+  compatible:
+    const: ovti,ov5693
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    description:
+      System input clock (aka XVCLK). From 6 to 27 MHz.
+    maxItems: 1
+
+  dovdd-supply:
+    description:
+      Digital I/O voltage supply, 1.8V.
+
+  avdd-supply:
+    description:
+      Analog voltage supply, 2.8V.
+
+  dvdd-supply:
+    description:
+      Digital core voltage supply, 1.2V.
+
+  reset-gpios:
+    description:
+      The phandle and specifier for the GPIO that controls sensor reset.
+      This corresponds to the hardware pin XSHUTDN which is physically
+      active low.
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - port
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/px30-cru.h>
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/pinctrl/rockchip.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        ov5693: camera@36 {
+            compatible = "ovti,ov5693";
+            reg = <0x36>;
+
+            reset-gpios = <&gpio2 RK_PB1 GPIO_ACTIVE_LOW>;
+            pinctrl-names = "default";
+            pinctrl-0 = <&cif_clkout_m0>;
+
+            clocks = <&cru SCLK_CIF_OUT>;
+            assigned-clocks = <&cru SCLK_CIF_OUT>;
+            assigned-clock-rates = <19200000>;
+
+            avdd-supply = <&vcc_1v8>;
+            dvdd-supply = <&vcc_1v2>;
+            dovdd-supply = <&vcc_2v8>;
+
+            rotation = <90>;
+            orientation = <0>;
+
+            port {
+                ucam_out: endpoint {
+                    remote-endpoint = <&mipi_in_ucam>;
+                    data-lanes = <1 2>;
+                    link-frequencies = /bits/ 64 <450000000>;
+                };
+            };
+        };
+    };
+
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index 66bffb24a348..5a7881ee15e1 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -14767,6 +14767,7 @@ M:	Daniel Scally <djrscally@...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,ov5693.yaml
 F:	drivers/media/i2c/ov5693.c
 
 OMNIVISION OV5695 SENSOR DRIVER
-- 
2.25.1