linux-kernel - [PATCH 1/2] ARM: dts: dra72-evm: Enable I2C1 node

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Date:	Mon, 28 Jul 2014 11:48:53 +0530
From:	Keerthy <j-keerthy@...com>
To:	<linux-patch-review@...t.ti.com>
CC:	<nm@...com>, <mark.rutland@....com>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-omap@...r.kernel.org>,
	<tony@...mide.com>, <galak@...eaurora.org>, <lokeshvutla@...com>
Subject: [PATCH 1/2] ARM: dts: dra72-evm: Enable I2C1 node

From: Keerthy J <j-keerthy@...com>

I2C1 bus is used for the following peripherals
	P8 connector (MLB)
	TLV320AIC3106 Audio codec
	J15 LCD header
	24WC256 eeprom
	TMP102AIDRLT temperature sensor
	PCF8575 GPIO expander
	PCA9306 i2c voltage translator -> Goes to P9 for comm interface
	P2 expansion connector
	TPS65917 PMIC

The slowest speed of all the peripherals seems to be 400KHz.

Tested-by: Lokesh Vutla <lokeshvutla@...com>
Signed-off-by: Nishanth Menon <nm@...com>
Signed-off-by: Keerthy <j-keerthy@...com>
---
 arch/arm/boot/dts/dra72-evm.dts |   16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/arch/arm/boot/dts/dra72-evm.dts b/arch/arm/boot/dts/dra72-evm.dts
index 5147023..1e12862 100644
--- a/arch/arm/boot/dts/dra72-evm.dts
+++ b/arch/arm/boot/dts/dra72-evm.dts
@@ -19,6 +19,22 @@
 	};
 };
 
+&dra7_pmx_core {
+	i2c1_pins: pinmux_i2c1_pins {
+		pinctrl-single,pins = <
+			0x400 (PIN_INPUT | MUX_MODE0) /* i2c1_sda.i2c1_sda */
+			0x404 (PIN_INPUT | MUX_MODE0) /* i2c1_scl.i2c1_scl */
+		>;
+	};
+};
+
+&i2c1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c1_pins>;
+	clock-frequency = <400000>;
+};
+
 &uart1 {
 	status = "okay";
 };
-- 
1.7.9.5

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