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Message-ID: <1461041402-19962-2-git-send-email-hs.liao@mediatek.com>
Date: Tue, 19 Apr 2016 12:49:59 +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: [RFC v4 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>;
+ ...
+ };
--
1.7.9.5
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