[PATCH v2 2/2] media: dt-bindings: media: i2c: Add bindings for AP1302

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The AP1302 is a standalone ISP for ON Semiconductor sensors.
Add corresponding DT bindings.

Signed-off-by: Anil Kumar Mamidala <anil.mamidala@xxxxxxxxxx>
Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Signed-off-by: Stefan Hladnik <stefan.hladnik@xxxxxxxxx>
Signed-off-by: Florian Rebaudo <frebaudo@xxxxxxxxxxx>
---
 .../devicetree/bindings/media/i2c/onnn,ap1302.yaml | 202 +++++++++++++++++++++
 1 file changed, 202 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/i2c/onnn,ap1302.yaml

diff --git a/Documentation/devicetree/bindings/media/i2c/onnn,ap1302.yaml b/Documentation/devicetree/bindings/media/i2c/onnn,ap1302.yaml
new file mode 100644
index 0000000..d96e9db
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/onnn,ap1302.yaml
@@ -0,0 +1,202 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/i2c/onnn,ap1302.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ON Semiconductor AP1302 Advanced Image Coprocessor
+
+maintainers:
+  - Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
+  - Anil Kumar M <anil.mamidala@xxxxxxxxxx>
+
+description: |-
+  The AP1302 is a standalone ISP for ON Semiconductor sensors. It interfaces to
+  up to two RAW CMOS sensors over MIPI CSI-2 connections, processes the two
+  video streams and outputs YUV frames to the host over a MIPI CSI-2 interface.
+  Frames are output side by side or on two virtual channels.
+
+  The sensors must be identical. They are connected to the AP1302 on dedicated
+  I2C buses, and are controlled by the AP1302 firmware. They are not accessible
+  from the host.
+
+properties:
+  compatible:
+    const: onnn,ap1302
+
+  reg:
+    description: I2C device address.
+    maxItems: 1
+
+  clocks:
+    description: Reference to the CLK clock.
+    maxItems: 1
+
+  reset-gpios:
+    description: Reference to the GPIO connected to the RST pin (active low).
+    maxItems: 1
+
+  standby-gpios:
+    description:
+      Reference to the GPIO connected to the STANDBY pin (active high).
+    maxItems: 1
+
+  port:
+    $ref: /schemas/graph.yaml#/$defs/port-base
+    unevaluatedProperties: false
+    description: MIPI CSI-2 output interface to the host.
+
+    properties:
+      endpoint:
+        $ref: /schemas/graph.yaml#/$defs/endpoint-base
+        unevaluatedProperties: false
+
+        properties:
+          clock-noncontinuous:
+            type: boolean
+
+          data-lanes:
+            oneOf:
+              - items:
+                  - const: 1
+              - items:
+                  - const: 1
+                  - const: 2
+              - items:
+                  - const: 1
+                  - const: 2
+                  - const: 3
+                  - const: 4
+
+        required:
+          - data-lanes
+
+  sensors:
+    type: object
+    description: List of connected sensors
+
+    properties:
+      "#address-cells":
+        const: 1
+
+      "#size-cells":
+        const: 0
+
+      onnn,model:
+        $ref: "/schemas/types.yaml#/definitions/string"
+        description: |
+          Model of the connected sensors. Must be a valid compatible string.
+
+          If no sensor is connected, this property must no be specified, and
+          the AP1302 can be used with it's internal test pattern generator.
+
+    patternProperties:
+      "^sensor@[01]":
+        type: object
+        description: |
+          Sensors connected to the first and second input, with one node per
+          sensor.
+
+        properties:
+          reg:
+            description: AP1302 input port number
+            maxItems: 1
+
+        patternProperties:
+          ".*-supply":
+            description: Power supplies for the sensor
+
+        required:
+          - reg
+
+        additionalProperties: false
+
+    required:
+      - "#address-cells"
+      - "#size-cells"
+
+    # How can we express that onnn,model requires one sensor object to be set ?
+
+    additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - port
+  - sensors
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        camera@3c {
+            compatible = "onnn,ap1302";
+            reg = <0x3c>;
+
+            clocks = <&clk24mhz>;
+
+            reset-gpios = <&pio 102 GPIO_ACTIVE_LOW>;
+            standby-gpios = <&pio 40 GPIO_ACTIVE_HIGH>;
+
+            port {
+                isp1_out: endpoint {
+                    remote-endpoint = <&seninf_in1>;
+                    data-lanes = <1 2 3 4>;
+                };
+            };
+
+            sensors {
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                onnn,model = "onnn,ar0144";
+
+                sensor@0 {
+                    reg = <0>;
+
+                    vdd-supply = <&mt6358_vcamd_reg>;
+                    vaa-supply = <&mt6358_vcama1_reg>;
+                    vddio-supply = <&reg_1p8v_ext>;
+                };
+            };
+        };
+    };
+
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        camera@3c {
+            compatible = "onnn,ap1302";
+            reg = <0x3c>;
+
+            clocks = <&topckgen 0>;
+
+            reset-gpios = <&pio 102 GPIO_ACTIVE_LOW>;
+            standby-gpios = <&pio 40 GPIO_ACTIVE_HIGH>;
+
+            port {
+                isp2_out: endpoint {
+                    remote-endpoint = <&seninf_in1>;
+                    data-lanes = <1 2>;
+                };
+            };
+
+            sensors {
+                #address-cells = <1>;
+                #size-cells = <0>;
+            };
+        };
+    };
+
+...
-- 
2.7.4




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