[PATCH 2/2] arm: dt: Add device tree support for i2c instance 1 on exynos4 dt machine

[Thomas Abraham <thomas.abraham-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>]

Add device node for i2c instance 1 and list all its connected slave
devices.

Signed-off-by: Thomas Abraham <thomas.abraham-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
---
 arch/arm/boot/dts/exynos4-smdkv310.dts  |   19 ++++++++++++++++++-
 arch/arm/mach-exynos4/Kconfig           |    1 +
 arch/arm/mach-exynos4/mach-exynos4-dt.c |    9 +++++++++
 3 files changed, 28 insertions(+), 1 deletions(-)

diff --git a/arch/arm/boot/dts/exynos4-smdkv310.dts b/arch/arm/boot/dts/exynos4-smdkv310.dts
index d65c18c..29c40ed 100644
--- a/arch/arm/boot/dts/exynos4-smdkv310.dts
+++ b/arch/arm/boot/dts/exynos4-smdkv310.dts
@@ -23,7 +23,7 @@
 	};
 
 	chosen {
-		bootargs = "root=/dev/mmcblk0p1 rootfstype=ext3 rootwait console=ttySAC1,115200";
+		bootargs = "root=/dev/mmcblk0p1 rootfstype=ext3 rootwait console=ttySAC1,115200 init=/linuxrc";
 	};
 
 	soc {
@@ -64,5 +64,22 @@
 			samsung,sdhci-cd-type = <0>;
 			samsung,sdhci-clkdiv-external;
 		};
+
+		i2c@13870000 {
+			compatible = "samsung,s3c2440-i2c";
+			reg = <0x13870000 0x100>;
+			interrupts = <345>;
+			samsung,i2c-bus-number = <1>;
+			samsung,i2c-slave-addr = <16>;
+			samsung,i2c-sda-delay = <100>;
+			samsung,i2c-max-bus-freq = <100000>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			wm8994@1a {
+				compatible = "wlf,wm8994";
+				reg = <0x1a>;
+			};
+		};
 	};
 };
diff --git a/arch/arm/mach-exynos4/Kconfig b/arch/arm/mach-exynos4/Kconfig
index bb97b7e..c7fce3e 100644
--- a/arch/arm/mach-exynos4/Kconfig
+++ b/arch/arm/mach-exynos4/Kconfig
@@ -193,6 +193,7 @@ config MACH_EXYNOS4_DT
 	select S3C_DEV_HSMMC
 	select S3C_DEV_HSMMC2
 	select EXYNOS4_SETUP_SDHCI
+	select EXYNOS4_SETUP_I2C1
 	help
 	  Machine support for Samsung Exynos4 machine with device tree enabled.
 
diff --git a/arch/arm/mach-exynos4/mach-exynos4-dt.c b/arch/arm/mach-exynos4/mach-exynos4-dt.c
index 120665a..ef6b4cb 100644
--- a/arch/arm/mach-exynos4/mach-exynos4-dt.c
+++ b/arch/arm/mach-exynos4/mach-exynos4-dt.c
@@ -23,7 +23,10 @@
 #include <plat/regs-serial.h>
 #include <plat/exynos4.h>
 #include <plat/cpu.h>
+#include <plat/devs.h>
 #include <plat/sdhci.h>
+#include <plat/iic.h>
+#include <plat/iic-core.h>
 
 #include <mach/map.h>
 
@@ -62,6 +65,10 @@ static struct s3c2410_uartcfg smdkv310_uartcfgs[] __initdata = {
 	},
 };
 
+static struct s3c2410_platform_i2c exynos4_dt_i2c_data1 __initdata = {
+	.cfg_gpio	= s3c_i2c1_cfg_gpio,
+};
+
 /*
  * The following lookup table is used to override device names when devices
  * are registered from device tree. Optionally, the platform data can also
@@ -75,6 +82,8 @@ static const struct of_dev_auxdata exynos4_auxdata_lookup[] __initconst = {
 				"s3c-sdhci.2", &s3c_hsmmc2_def_platdata),
 	OF_DEV_AUXDATA("samsung,s3c6410-sdhci", EXYNOS4_PA_HSMMC(0),
 				"s3c-sdhci.0", &s3c_hsmmc0_def_platdata),
+	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(1),
+				"s3c2440-i2c.1", &exynos4_dt_i2c_data1),
 	{},
 };
 
-- 
1.7.1