media: dt-bindings: media: Add OmniVision OV8858

Add binding schema for the OmniVision OV8858 8 Megapixels camera sensor.
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

Documentation/devicetree/bindings/media/i2c/ovti,ov8858.yaml

+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/i2c/ovti,ov8858.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: OmniVision OV8858 Image Sensor
+
+maintainers:
+  - Jacopo Mondi <jacopo.mondi@ideasonboard.com>
+  - Nicholas Roth <nicholas@rothemail.net>
+
+description: |
+  The OmniVision OV8858 is a color CMOS 8 Megapixels (3264x2448) image sensor
+  controlled through an I2C-compatible SCCB bus. The sensor transmits images
+  on a MIPI CSI-2 output interface with up to 4 data lanes.
+
+properties:
+  compatible:
+    const: ovti,ov8858
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+    description: XVCLK external clock
+
+  clock-names:
+    const: xvclk
+
+  dvdd-supply:
+    description: Digital Domain Power Supply
+
+  avdd-supply:
+    description: Analog Domain Power Supply
+
+  dovdd-supply:
+    description: I/O Domain Power Supply
+
+  powerdown-gpios:
+    description: PWDNB powerdown GPIO (active low)
+
+  reset-gpios:
+    maxItems: 1
+    description: XSHUTDN reset GPIO (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:
+            minItems: 1
+            maxItems: 4
+
+        required:
+          - data-lanes
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - port
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/pinctrl/rockchip.h>
+    #include <dt-bindings/clock/rk3399-cru.h>
+    #include <dt-bindings/gpio/gpio.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        ov8858: camera@36 {
+            compatible = "ovti,ov8858";
+            reg = <0x36>;
+
+            clocks = <&cru SCLK_CIF_OUT>;
+            clock-names = "xvclk";
+            assigned-clocks = <&cru SCLK_CIF_OUT>;
+            assigned-clock-rates = <24000000>;
+
+            dovdd-supply = <&vcc1v8_dvp>;
+
+            reset-gpios = <&gpio1 RK_PA4 GPIO_ACTIVE_LOW>;
+            powerdown-gpios = <&gpio2 RK_PB4 GPIO_ACTIVE_LOW>;
+
+            port {
+                ucam_out: endpoint {
+                    remote-endpoint = <&mipi_in_ucam>;
+                    data-lanes = <1 2 3 4>;
+                };
+            };
+        };
+    };
+...