Re: [PATCH 3/3] video: clps711x: Add bindings documentation for CLPS711X framebuffer
From: Mark Rutland <mark.rutland@arm.com>
Date: 2014-03-21 09:47:01
Also in:
linux-devicetree
On Thu, Mar 20, 2014 at 04:26:58PM +0000, Alexander Shiyan wrote:
quoted hunk
Add OF document for Cirrus Logic CLPS711X framebuffer driver. Signed-off-by: Alexander Shiyan <redacted> --- .../bindings/video/cirrus,clps711x-fb.txt | 48 ++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 Documentation/devicetree/bindings/video/cirrus,clps711x-fb.txtdiff --git a/Documentation/devicetree/bindings/video/cirrus,clps711x-fb.txt b/Documentation/devicetree/bindings/video/cirrus,clps711x-fb.txt new file mode 100644 index 0000000..9d59ad3 --- /dev/null +++ b/Documentation/devicetree/bindings/video/cirrus,clps711x-fb.txt@@ -0,0 +1,48 @@ +* Currus Logic CLPS711X Framebuffer + +Required properties: +- compatible: Shall contain "cirrus,clps711x-fb". +- reg: Physical base address and length of the controller's registers + + location and size of the framebuffer memory. +- clocks: phandle + clock specifier pair of the FB reference clock. + +Required nodes: +- display: Phandle to a display node as described in display-timing.txt.
Is this a node or a property? It looks like you need a node and a phandle to it, please describe these separately. Cheers, Mark.
+ Additionally, the display node has to define properties:
+ - bits-per-pixel: Bits per pixel.
+ - ac-prescale: LCD AC bias frequency. This frequency is the required
+ AC bias frequency for a given manufacturer's LCD plate.
+ - cmap-invert: Invert the color levels (Optional).
+
+Optional properties:
+- lcd-supply: Regulator for LCD supply voltage.
+
+Example:
+ fb: fb@800002c0 {
+ compatible = "cirrus,ep7312-fb", "cirrus,clps711x-fb";
+ reg = <0x800002c0 0xd44>, <0x60000000 0xc000>;
+ clocks = <&clks 2>;
+ lcd-supply = <®5v0>;
+ display = <&display>;
+ };
+
+ display: display {
+ model = "320x240x4";
+ native-mode = <&timing0>;
+ bits-per-pixel = <4>;
+ ac-prescale = <17>;
+
+ display-timings {
+ timing0: 320x240 {
+ hactive = <320>;
+ hback-porch = <0>;
+ hfront-porch = <0>;
+ hsync-len = <0>;
+ vactive = <240>;
+ vback-porch = <0>;
+ vfront-porch = <0>;
+ vsync-len = <0>;
+ clock-frequency = <6500000>;
+ };
+ };
+ };
--
1.8.3.2
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