linux-kernel - [PATCH v7 1/4] dt-bindings: soc: Add documentation for the MediaTek GCE unit

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Message-ID: <1464006190-344-2-git-send-email-hs.liao@mediatek.com>
Date:	Mon, 23 May 2016 20:23:07 +0800
From:	HS Liao <hs.liao@...iatek.com>
To:	Rob Herring <robh+dt@...nel.org>,
	Matthias Brugger <matthias.bgg@...il.com>
CC:	Daniel Kurtz <djkurtz@...omium.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-mediatek@...ts.infradead.org>,
	<srv_heupstream@...iatek.com>,
	Sascha Hauer <kernel@...gutronix.de>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Nicolas Boichat <drinkcat@...omium.org>,
	CK HU <ck.hu@...iatek.com>,
	cawa cheng <cawa.cheng@...iatek.com>,
	Bibby Hsieh <bibby.hsieh@...iatek.com>,
	YT Shen <yt.shen@...iatek.com>,
	Daoyuan Huang <daoyuan.huang@...iatek.com>,
	Damon Chu <damon.chu@...iatek.com>,
	Josh-YC Liu <josh-yc.liu@...iatek.com>,
	Glory Hung <glory.hung@...iatek.com>,
	Jiaguang Zhang <jiaguang.zhang@...iatek.com>,
	HS Liao <hs.liao@...iatek.com>
Subject: [PATCH v7 1/4] dt-bindings: soc: Add documentation for the MediaTek GCE unit

This adds documentation for the MediaTek Global Command Engine (GCE) unit
found in MT8173 SoCs.

Signed-off-by: HS Liao <hs.liao@...iatek.com>
Acked-by: Rob Herring <robh@...nel.org>
---
 .../devicetree/bindings/soc/mediatek/gce.txt       | 34 ++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/mediatek/gce.txt

diff --git a/Documentation/devicetree/bindings/soc/mediatek/gce.txt b/Documentation/devicetree/bindings/soc/mediatek/gce.txt
new file mode 100644
index 0000000..eff07e2
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/mediatek/gce.txt
@@ -0,0 +1,34 @@
+MediaTek GCE
+===============
+
+The Global Command Engine (GCE) is used to help read/write registers with
+critical time limitation, such as updating display configuration during the
+vblank. The GCE can be used to implement the Command Queue (CMDQ) driver.
+
+Required properties:
+- compatible: Must be "mediatek,mt8173-gce"
+- reg: Address range of the GCE unit
+- interrupts: The interrupt signal from the GCE block
+- clock: Clocks according to the common clock binding
+- clock-names: Must be "gce" to stand for GCE clock
+
+Required properties for a client device:
+- mediatek,gce: Should point to the respective GCE block
+
+Example:
+
+	gce: gce@...12000 {
+		compatible = "mediatek,mt8173-gce";
+		reg = <0 0x10212000 0 0x1000>;
+		interrupts = <GIC_SPI 135 IRQ_TYPE_LEVEL_LOW>;
+		clocks = <&infracfg CLK_INFRA_GCE>;
+		clock-names = "gce";
+	};
+
+Example for a client device:
+
+	mmsys: clock-controller@...00000 {
+		compatible = "mediatek,mt8173-mmsys";
+		mediatek,gce = <&gce>;
+		...
+	};
-- 
1.9.1