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* [V9, 1/2] media: dt-bindings: media: i2c: Document OV02A10 bindings
From: Dongchun Zhu @ 2020-05-23  8:41 UTC (permalink / raw)
  To: linus.walleij, bgolaszewski, mchehab, andriy.shevchenko, robh+dt,
	mark.rutland, sakari.ailus, drinkcat, tfiga, matthias.bgg,
	bingbu.cao
  Cc: devicetree, srv_heupstream, shengnan.wang, sj.huang,
	linux-mediatek, dongchun.zhu, louis.kuo, linux-arm-kernel,
	linux-media
In-Reply-To: <20200523084103.31276-1-dongchun.zhu@mediatek.com>

Add DT bindings documentation for Omnivision OV02A10 image sensor.

Signed-off-by: Dongchun Zhu <dongchun.zhu@mediatek.com>
---
 .../bindings/media/i2c/ovti,ov02a10.yaml           | 172 +++++++++++++++++++++
 MAINTAINERS                                        |   7 +
 2 files changed, 179 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/i2c/ovti,ov02a10.yaml

diff --git a/Documentation/devicetree/bindings/media/i2c/ovti,ov02a10.yaml b/Documentation/devicetree/bindings/media/i2c/ovti,ov02a10.yaml
new file mode 100644
index 0000000..56f31b5
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/ovti,ov02a10.yaml
@@ -0,0 +1,172 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright (c) 2020 MediaTek Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/i2c/ovti,ov02a10.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Omnivision OV02A10 CMOS Sensor Device Tree Bindings
+
+maintainers:
+  - Dongchun Zhu <dongchun.zhu@mediatek.com>
+
+description: |-
+  The Omnivision OV02A10 is a low-cost, high performance, 1/5-inch, 2 megapixel
+  image sensor, which is the latest production derived from Omnivision's CMOS
+  image sensor technology. Ihis chip supports high frame rate speeds up to 30fps
+  @ 1600x1200 (UXGA) resolution transferred over a 1-lane MIPI interface. The
+  sensor output is available via CSI-2 serial data output.
+
+properties:
+  compatible:
+    const: ovti,ov02a10
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: top mux camtg clock
+      - description: divider clock
+
+  clock-names:
+    items:
+      - const: eclk
+      - const: freq_mux
+
+  clock-frequency:
+    description:
+      Frequency of the eclk clock in Hertz.
+
+  dovdd-supply:
+    description:
+      Definition of the regulator used as Digital I/O voltage supply.
+
+  avdd-supply:
+    description:
+      Definition of the regulator used as Analog voltage supply.
+
+  dvdd-supply:
+    description:
+      Definition of the regulator used as Digital core voltage supply.
+
+  powerdown-gpios:
+    description:
+      Must be the device tree identifier of the GPIO connected to the
+      PD_PAD pin. This pin is used to place the OV02A10 into Standby mode
+      or Shutdown mode. As the line is active low, it should be
+      marked GPIO_ACTIVE_LOW.
+
+  reset-gpios:
+    description:
+      Must be the device tree identifier of the GPIO connected to the
+      RST_PD pin. If specified, it will be asserted during driver probe.
+      As the line is active high, it should be marked GPIO_ACTIVE_HIGH.
+
+  rotation:
+    description:
+      Definition of the sensor's placement.
+    allOf:
+      - $ref: "/schemas/types.yaml#/definitions/uint32"
+      - enum:
+          - 0    # Sensor Mounted Upright
+          - 180  # Sensor Mounted Upside Down
+        default: 0
+
+  ovti,mipi-tx-speed:
+    description:
+      Indication of MIPI transmission speed select, which is to control D-PHY
+      timing setting by adjusting MIPI clock voltage to improve the clock
+      driver capability.
+    allOf:
+      - $ref: "/schemas/types.yaml#/definitions/uint32"
+      - enum:
+          - 0    #  20MHz -  30MHz
+          - 1    #  30MHz -  50MHz
+          - 2    #  50MHz -  75MHz
+          - 3    #  75MHz - 100MHz
+          - 4    # 100MHz - 130MHz
+        default: 3
+
+  # See ../video-interfaces.txt for details
+  port:
+    type: object
+    additionalProperties: false
+
+    properties:
+      endpoint:
+        type: object
+        additionalProperties: false
+
+        properties:
+          data-lanes:
+            maxItems: 1
+
+          link-frequencies: true
+          remote-endpoint: true
+
+        required:
+          - data-lanes
+          - link-frequencies
+          - remote-endpoint
+
+    required:
+      - endpoint
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - clock-frequency
+  - dovdd-supply
+  - avdd-supply
+  - dvdd-supply
+  - powerdown-gpios
+  - reset-gpios
+  - port
+
+additionalProperties: false
+
+examples:
+  - |
+
+    #include <dt-bindings/clock/mt8183-clk.h>
+    #include <dt-bindings/gpio/gpio.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        ov02a10: camera-sensor@3d {
+            compatible = "ovti,ov02a10";
+            reg = <0x3d>;
+            pinctrl-names = "default";
+            pinctrl-0 = <&clk_24m_cam>;
+
+            clocks = <&topckgen CLK_TOP_MUX_CAMTG>,
+                     <&topckgen CLK_TOP_UNIVP_192M_D8>;
+            clock-names = "eclk", "freq_mux";
+            clock-frequency = <24000000>;
+
+            rotation = <180>;
+            ovti,mipi-tx-speed = <4>;
+
+            dovdd-supply = <&mt6358_vcamio_reg>;
+            avdd-supply = <&mt6358_vcama1_reg>;
+            dvdd-supply = <&mt6358_vcn18_reg>;
+
+            powerdown-gpios = <&pio 107 GPIO_ACTIVE_LOW>;
+            reset-gpios = <&pio 109 GPIO_ACTIVE_HIGH>;
+
+            port {
+                wcam_out: endpoint {
+                    data-lanes = <1>;
+                    link-frequencies = /bits/ 64 <390000000>;
+                    remote-endpoint = <&mipi_in_wcam>;
+                };
+            };
+        };
+    };
+
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index e64e5db..63a2335 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -12389,6 +12389,13 @@ M:	Harald Welte <laforge@gnumonks.org>
 S:	Maintained
 F:	drivers/char/pcmcia/cm4040_cs.*
 
+OMNIVISION OV02A10 SENSOR DRIVER
+M:	Dongchun Zhu <dongchun.zhu@mediatek.com>
+L:	linux-media@vger.kernel.org
+S:	Maintained
+T:	git git://linuxtv.org/media_tree.git
+F:	Documentation/devicetree/bindings/media/i2c/ovti,ov02a10.yaml
+
 OMNIVISION OV13858 SENSOR DRIVER
 M:	Sakari Ailus <sakari.ailus@linux.intel.com>
 L:	linux-media@vger.kernel.org
-- 
2.9.2
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