[PATCH v15 1/2] media: dt-bindings: media: i2c: Document OV02A10 bindings

Dongchun Zhu
2020-10-13T13:05:42Z

Add YAML device tree binding for OV02A10 CMOS image sensor, and the
relevant MAINTAINERS entries.

Signed-off-by: Dongchun Zhu <dongchun.zhu@mediatek.com>
---
.../bindings/media/i2c/ovti,ov02a10.yaml | 162 +++++++++++++++++++++
MAINTAINERS | 7 +
2 files changed, 169 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..fb98964
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/ovti,ov02a10.yaml
@@ -0,0 +1,162 @@
+# 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:
+ maxItems: 1
+
+ clock-names:
+ description:
+ External clock for the sensor.
+ items:
+ - const: eclk
+
+ clock-frequency:
+ description:
+ Frequency of the eclk clock in Hz.
+
+ 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 needs to be high for the powerdown mode
+ to be active, it should be marked GPIO_ACTIVE_HIGH.
+ maxItems: 1
+
+ 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 needs to be low for the reset to be active, it should be
+ marked GPIO_ACTIVE_LOW.
+ maxItems: 1
+
+ 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-clock-voltage:
+ description:
+ An array of 2-tuples items, and each item consists of link frequency and
+ MIPI clock voltage unit like <freq-kHz volt-unit>. Clock voltage unit is
+ dependent upon link speed, indicating MIPI transmission speed select that
+ controls D-PHY timing setting by adjusting MIPI clock voltage to improve
+ the clock driver capability.
+ $ref: "/schemas/types.yaml#/definitions/uint32-array"
+ minItems: 2
+ default: [390000, 4]
+
+ # See ../video-interfaces.txt for details
+ port:
+ type: object
+ additionalProperties: false
+ description:
+ Output port node, single endpoint describing the CSI-2 transmitter.
+
+ properties:
+ endpoint:
+ type: object
+ additionalProperties: false
+
+ properties:
+ link-frequencies: true
+ remote-endpoint: true
+
+ required:
+ - 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/gpio/gpio.h>
+
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ ov02a10: camera-sensor@3d {
+ compatible = "ovti,ov02a10";
+ reg = <0x3d>;
+
+ powerdown-gpios = <&pio 107 GPIO_ACTIVE_HIGH>;
+ reset-gpios = <&pio 109 GPIO_ACTIVE_LOW>;
+
+ clocks = <&ov02a10_clk>;
+ clock-names = "eclk";
+ clock-frequency = <24000000>;
+
+ rotation = <180>;
+ ovti,mipi-clock-voltage = <390000 4>;
+
+ dovdd-supply = <&ov02a10_dovdd>;
+ avdd-supply = <&ov02a10_avdd>;
+ dvdd-supply = <&ov02a10_dvdd>;
+
+ port {
+ wcam_out: endpoint {
+ link-frequencies = /bits/ 64 <390000000>;
+ remote-endpoint = <&mipi_in_wcam>;
+ };
+ };
+ };
+ };
+
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index deaafb6..48aa7a7 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -12718,6 +12718,13 @@ 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