[PATCH v6 1/3] dt-bindings: Add I2C bindings for mt65xx/mt81xx.

From: Eddie Huang <eddie.huang@mediatek.com>
To: Wolfram Sang <wsa@the-dreams.de>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	Sascha Hauer <kernel@pengutronix.de>
Cc: <srv_heupstream@mediatek.com>, Rob Herring <robh+dt@kernel.org>,
	Pawel Moll <pawel.moll@arm.com>,
	Mark Rutland <mark.rutland@arm.com>,
	Ian Campbell <ijc+devicetree@hellion.org.uk>,
	Kumar Gala <galak@codeaurora.org>,
	Jean Delvare <jdelvare@suse.de>,
	David Box <david.e.box@linux.intel.com>,
	Arnd Bergmann <arnd@arndb.de>,
	Doug Anderson <dianders@chromium.org>,
	Max Schwarz <max.schwarz@online.de>,
	Boris BREZILLON <boris.brezillon@free-electrons.com>,
	Anders Berg <anders.berg@avagotech.com>,
	Neelesh Gupta <neelegup@linux.vnet.ibm.com>,
	Lee Jones <lee.jones@linaro.org>, Simon Glass <sjg@chromium.org>,
	Jim Cromie <jim.cromie@gmail.com>,
	Wei Yan <sledge.yanwei@huawei.com>,
	Bjorn Andersson <bjorn.andersson@sonymobile.com>,
	Beniamino Galvani <b.galvani@gmail.com>,
	Xudong Chen <xudong.chen@mediatek.com>,
	Liguo Zhang <liguo.zhang@mediatek.com>,
	<linux-i2c@vger.kernel.org>, <devicetree@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-mediatek@lists.infradead.org>,
	Eddie Huang <eddie.huang@mediatek.com>
Subject: [PATCH v6 1/3] dt-bindings: Add I2C bindings for mt65xx/mt81xx.
Date: Wed, 1 Apr 2015 13:29:47 +0800	[thread overview]
Message-ID: <1427866189-19262-2-git-send-email-eddie.huang@mediatek.com> (raw)
In-Reply-To: <1427866189-19262-1-git-send-email-eddie.huang@mediatek.com>

From: Xudong Chen <xudong.chen@mediatek.com>

Add devicetree bindings for Mediatek Soc I2C driver.

Signed-off-by: Xudong Chen <xudong.chen@mediatek.com>
Signed-off-by: Eddie Huang <eddie.huang@mediatek.com>
---
 .../devicetree/bindings/i2c/i2c-mt6577.txt         | 41 ++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/i2c/i2c-mt6577.txt

diff --git a/Documentation/devicetree/bindings/i2c/i2c-mt6577.txt b/Documentation/devicetree/bindings/i2c/i2c-mt6577.txt
new file mode 100644
index 0000000..0ce6fa3
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/i2c-mt6577.txt
@@ -0,0 +1,41 @@
+* Mediatek's I2C controller
+
+The Mediatek's I2C controller is used to interface with I2C devices.
+
+Required properties:
+  - compatible: value should be either of the following.
+      (a) "mediatek,mt6577-i2c", for i2c compatible with mt6577 i2c.
+      (b) "mediatek,mt6589-i2c", for i2c compatible with mt6589 i2c.
+      (c) "mediatek,mt8127-i2c", for i2c compatible with mt8127 i2c.
+      (d) "mediatek,mt8135-i2c", for i2c compatible with mt8135 i2c.
+      (e) "mediatek,mt8173-i2c", for i2c compatible with mt8173 i2c.
+  - reg: physical base address of the controller and dma base, length of memory
+    mapped region.
+  - interrupts: interrupt number to the cpu.
+  - clock-div: the fixed value for frequency divider of clock source in i2c
+    module. Each IC may be different.
+  - clocks: clock name from clock manager
+  - clock-names: Must include "main" and "dma", if enable have-pmic need include
+    "pmic" extra.
+
+Optional properties:
+  - clock-frequency: Frequency in Hz of the bus when transfer, the default value
+    is 100000.
+  - mediatek,have-pmic: platform can control i2c form special pmic side.
+    Only mt6589 and mt8135 support this feature.
+  - mediatek,use-push-pull: IO config use push-pull mode.
+
+Example:
+
+	i2c0: i2c@1100d000 {
+			compatible = "mediatek,mt6577-i2c";
+			reg = <0x1100d000 0x70>,
+			      <0x11000300 0x80>;
+			interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_LOW>;
+			clock-frequency = <400000>;
+			mediatek,have-pmic;
+			clock-div = <16>;
+			clocks = <&i2c0_ck>, <&ap_dma_ck>;
+			clock-names = "main", "dma";
+	};
+
-- 
1.8.1.1.dirty

