linux-kernel - [PATCH v2 1/3] dt-bindings: media: ov772x: Document endpoint properties

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Date:   Mon,  3 Aug 2020 12:39:11 +0100
From:   Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
To:     Jacopo Mondi <jacopo@...ndi.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Kieran Bingham <kieran.bingham+renesas@...asonboard.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        linux-media@...r.kernel.org
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Biju Das <biju.das.jz@...renesas.com>,
        Prabhakar <prabhakar.csengg@...il.com>,
        linux-renesas-soc@...r.kernel.org,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: [PATCH v2 1/3] dt-bindings: media: ov772x: Document endpoint properties

Document endpoint properties required for parallel interface

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
---
 .../devicetree/bindings/media/i2c/ov772x.txt     | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/Documentation/devicetree/bindings/media/i2c/ov772x.txt b/Documentation/devicetree/bindings/media/i2c/ov772x.txt
index 0b3ede5b8e6a..1f4153484717 100644
--- a/Documentation/devicetree/bindings/media/i2c/ov772x.txt
+++ b/Documentation/devicetree/bindings/media/i2c/ov772x.txt
@@ -21,6 +21,22 @@ subnode for its digital output video port, in accordance with the video
 interface bindings defined in Documentation/devicetree/bindings/media/
 video-interfaces.txt.
 
+Endpoint node required properties for parallel connection are:
+- remote-endpoint: a phandle to the bus receiver's endpoint node.
+- bus-width: shall be set to <8> for 8 bits parallel bus
+	     or <10> for 10 bits parallel bus
+- data-shift: shall be set to <2> for 8 bits parallel bus
+	      (lines 9:2 are used) or <0> for 10 bits parallel bus
+- hsync-active: active state of the HSYNC signal, 0/1 for LOW/HIGH respectively.
+		(Not required for bus-type equal 6)
+- vsync-active: active state of the VSYNC signal, 0/1 for LOW/HIGH respectively.
+		(Not required for bus-type equal 6)
+- pclk-sample: sample data on rising (1) or falling (0) edge of the pixel clock
+	       signal. (Not required for bus-type equal 6)
+- bus-type: data bus type. Possible values are:
+	    5 - Parallel
+	    6 - Bt.656
+
 Example:
 
 &i2c0 {
-- 
2.17.1