media: port OV13858 and VD55G0 research with explicit stop retries (draft)

Documentation/devicetree/bindings/media/i2c/ovti,ov13858.yaml

@@ -0,0 +1,128 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/i2c/ovti,ov13858.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: OmniVision OV13858 CMOS image sensor
+
+maintainers:
+  - Leon Silcott <leon@boasi.io>
+
+description: |
+  The OV13858 is a CMOS image sensor controlled over I2C/SCCB. The supported
+  modes output 10-bit Bayer data over four CSI-2 D-PHY data lanes and use a
+  19.2 MHz external clock.
+
+allOf:
+  - $ref: /schemas/media/video-interface-devices.yaml#
+
+properties:
+  compatible:
+    const: ovti,ov13858
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    description: External sensor clock (XVCLK), running at 19.2 MHz.
+    maxItems: 1
+
+  dovdd-supply:
+    description: Digital I/O supply.
+
+  avdd-supply:
+    description: Analog supply.
+
+  dvdd-supply:
+    description: Digital core supply.
+
+  reset-gpios:
+    description: Active-low sensor reset signal.
+    maxItems: 1
+
+  port:
+    $ref: /schemas/graph.yaml#/$defs/port-base
+    additionalProperties: false
+
+    properties:
+      endpoint:
+        $ref: /schemas/media/video-interfaces.yaml#
+        unevaluatedProperties: false
+
+        properties:
+          bus-type:
+            const: 4
+
+          clock-lanes:
+            const: 0
+
+          clock-noncontinuous: false
+
+          data-lanes:
+            items:
+              - const: 1
+              - const: 2
+              - const: 3
+              - const: 4
+
+          lane-polarities:
+            items:
+              - const: 0
+              - const: 0
+              - const: 0
+              - const: 0
+              - const: 0
+
+          link-frequencies:
+            minItems: 1
+            maxItems: 2
+            uniqueItems: true
+            items:
+              enum: [270000000, 540000000]
+
+        required:
+          - data-lanes
+          - link-frequencies
+
+    required:
+      - endpoint
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - dovdd-supply
+  - avdd-supply
+  - dvdd-supply
+  - port
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        camera@10 {
+            compatible = "ovti,ov13858";
+            reg = <0x10>;
+            clocks = <&camera_clk>;
+            avdd-supply = <&camera_avdd>;
+            dovdd-supply = <&camera_dovdd>;
+            dvdd-supply = <&camera_dvdd>;
+            reset-gpios = <&gpio 0 GPIO_ACTIVE_LOW>;
+
+            port {
+                endpoint {
+                    data-lanes = <1 2 3 4>;
+                    link-frequencies = /bits/ 64 <270000000 540000000>;
+                    remote-endpoint = <&csi_in>;
+                };
+            };
+        };
+    };
+...

Documentation/devicetree/bindings/media/i2c/st,vd55g1.yaml

@@ -5,32 +5,32 @@
 $id: http://devicetree.org/schemas/media/i2c/st,vd55g1.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: STMicroelectronics VD55G1 Global Shutter Image Sensor
+title: STMicroelectronics VD55G1 Family Global Shutter Image Sensors
 
 maintainers:
   - Benjamin Mugnier <benjamin.mugnier@foss.st.com>
   - Sylvain Petinot <sylvain.petinot@foss.st.com>
+  - Peter Marshall <pm@petermarshall.ca>
 
 description: |-
- The STMicroelectronics VD55G1 is a global shutter image sensor with an active
- array size of 804H x 704V. It is programmable through I2C interface. The I2C
- address is fixed to 0x10.
+ The STMicroelectronics VD55G1 family (VD55G0, VD55G1, and VD65G4) consists of
+ global shutter image sensors. The VD55G0 has an array size of 644H x 604V.
+ The VD55G1 and VD65G4 have an array size of 804H x 704V. They are programmable
+ through I2C interface.
 
  Image data is sent through MIPI CSI-2, which is configured as only 1 data
  lane. The sensor provides 4 GPIOS that can be used for external LED signal
  (synchronized with sensor integration periods).
 
-allOf:
-  - $ref: /schemas/media/video-interface-devices.yaml#
-
 properties:
   compatible:
     enum:
+      - st,vd55g0
       - st,vd55g1
       - st,vd55g4
       - st,vd65g4
     description:
-      VD55G1 and VD55G4 are monochrome variants, while VD65G4 is a color one.
+      VD55G0 and VD55G1 are monochrome variants, while VD65G4 is a color variant.
 
   reg:
     maxItems: 1
@@ -101,6 +101,27 @@ required:
   - reset-gpios
   - port
 
+allOf:
+  - $ref: /schemas/media/video-interface-devices.yaml#
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: st,vd55g0
+    then:
+      properties:
+        # Illumination is not qualified by the sensor-only VD55G0 port.
+        st,leds: false
+
+        port:
+          properties:
+            endpoint:
+              properties:
+                link-frequencies:
+                  items:
+                    minimum: 375000000
+
 unevaluatedProperties: false
 
 examples:

MAINTAINERS

@@ -20225,6 +20225,7 @@ M:	Sakari Ailus <sakari.ailus@linux.intel.com>
 L:	linux-media@vger.kernel.org
 S:	Maintained
 T:	git git://linuxtv.org/media.git
+F:	Documentation/devicetree/bindings/media/i2c/ovti,ov13858.yaml
 F:	drivers/media/i2c/ov13858.c
 
 OMNIVISION OV13B10 SENSOR DRIVER
@@ -26034,6 +26035,7 @@ F:	drivers/hwmon/tsc1641.c
 ST VD55G1 DRIVER
 M:	Benjamin Mugnier <benjamin.mugnier@foss.st.com>
 M:	Sylvain Petinot <sylvain.petinot@foss.st.com>
+M:	Peter Marshall <pm@petermarshall.ca>
 L:	linux-media@vger.kernel.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/media/i2c/st,vd55g1.yaml