linux-kernel - [PATCH 2/4 v2] drm: Add DT bindings documentation for ARC PGU display controller

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Message-Id: <1457015956-30708-3-git-send-email-abrodkin@synopsys.com>
Date:	Thu,  3 Mar 2016 17:39:14 +0300
From:	Alexey Brodkin <Alexey.Brodkin@...opsys.com>
To:	linux-kernel@...r.kernel.org
Cc:	linux-snps-arc@...ts.infradead.org,
	Alexey Brodkin <Alexey.Brodkin@...opsys.com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>, devicetree@...r.kernel.org
Subject: [PATCH 2/4 v2] drm: Add DT bindings documentation for ARC PGU display controller

This add DT bindings documentation for ARC PGU display controller.

Signed-off-by: Alexey Brodkin <abrodkin@...opsys.com>
Cc: Rob Herring <robh+dt@...nel.org>
Cc: Pawel Moll <pawel.moll@....com>
Cc: Mark Rutland <mark.rutland@....com>
Cc: Ian Campbell <ijc+devicetree@...lion.org.uk>
Cc: Kumar Gala <galak@...eaurora.org>
Cc: devicetree@...r.kernel.org
Cc: linux-snps-arc@...ts.infradead.org
---

Changes v1 -> v2:
 * Clean-up

 .../devicetree/bindings/display/snps,arcpgu.txt    | 33 ++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/snps,arcpgu.txt

diff --git a/Documentation/devicetree/bindings/display/snps,arcpgu.txt b/Documentation/devicetree/bindings/display/snps,arcpgu.txt
new file mode 100644
index 0000000..57f3bc8
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/snps,arcpgu.txt
@@ -0,0 +1,33 @@
+ARC PGU
+
+This is a display controller found on several development boards produced
+by Synopsys. The ARC PGU is an RGB streamer that reads the data from a
+framebuffer and sends it to a single digital encoder (usually HDMI).
+
+Required properties:
+  - compatible: "snps,arcpgu"
+  - reg: Physical base address and length of the controller's registers.
+  - clocks: A list of phandle + clock-specifier pairs, one for each
+    entry in 'clock-names'.
+  - clock-names: A list of clock names. For ARC PGU it should contain:
+      - "pxlclk" for the clock feeding the output PLL of the controller.
+
+Required sub-nodes:
+  - port: The PGU connection to an encoder chip. The connection is modelled
+    using the OF graph bindings specified in
+    Documentation/devicetree/bindings/graph.txt.
+
+Example:
+
+/ {
+	...
+
+	pgu@...XXXXX {
+		compatible = "snps,arcpgu";
+		reg = <0xXXXXXXXX 0x400>;
+		clocks = <&clock_node>;
+		clock-names = "pxlclk";
+	};
+
+	...
+};
-- 
2.5.0