linux-kernel - [PATCH v2 2/2] media: dt-bindings: Add OF properties to ov7670

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Date:   Thu,  4 Jan 2018 10:52:33 +0100
From:   Jacopo Mondi <jacopo+renesas@...ndi.org>
To:     corbet@....net, mchehab@...nel.org, sakari.ailus@....fi,
        robh+dt@...nel.org, mark.rutland@....com
Cc:     Jacopo Mondi <jacopo+renesas@...ndi.org>,
        linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 2/2] media: dt-bindings: Add OF properties to ov7670

Describe newly introduced OF properties for ov7670 image sensor.
The driver supports two standard properties to configure synchronism
signals polarities and two custom properties already supported as
platform data options by the driver.
---
 Documentation/devicetree/bindings/media/i2c/ov7670.txt | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/Documentation/devicetree/bindings/media/i2c/ov7670.txt b/Documentation/devicetree/bindings/media/i2c/ov7670.txt
index 826b656..57ded18 100644
--- a/Documentation/devicetree/bindings/media/i2c/ov7670.txt
+++ b/Documentation/devicetree/bindings/media/i2c/ov7670.txt
@@ -9,11 +9,22 @@ Required Properties:
 - clocks: reference to the xclk input clock.
 - clock-names: should be "xclk".
 
+The following properties, as defined by video interfaces OF bindings
+"Documentation/devicetree/bindings/media/video-interfaces.txt" are supported:
+
+- hsync-active: active state of the HSYNC signal, 0/1 for LOW/HIGH respectively.
+- vsync-active: active state of the VSYNC signal, 0/1 for LOW/HIGH respectively.
+
+Default is high active state for both vsync and hsync signals.
+
 Optional Properties:
 - reset-gpios: reference to the GPIO connected to the resetb pin, if any.
   Active is low.
 - powerdown-gpios: reference to the GPIO connected to the pwdn pin, if any.
   Active is high.
+- ov7670,pll-bypass: set to 1 to bypass PLL for pixel clock generation.
+- ov7670,pclk-hb-disable: set to 1 to suppress pixel clock output signal during
+  horizontal blankings.
 
 The device node must contain one 'port' child node for its digital output
 video port, in accordance with the video interface bindings defined in
@@ -34,6 +45,9 @@ Example:
 			assigned-clocks = <&pck0>;
 			assigned-clock-rates = <25000000>;
 
+			vsync-active = <0>;
+			ov7670,pclk-hb-disable = <1>;
+
 			port {
 				ov7670_0: endpoint {
 					remote-endpoint = <&isi_0>;
-- 
2.7.4