Add device node for i2c instance 0 and 1 and list all its connected slave
devices.
Signed-off-by: Thomas Abraham <thomas.abraham at linaro.org>
---
arch/arm/boot/dts/exynos4-smdkv310.dts | 45 +++++++++++++++++++++++++++++++
arch/arm/mach-exynos4/Kconfig | 2 +
arch/arm/mach-exynos4/mach-exynos4-dt.c | 23 ++++++++++++++++
3 files changed, 70 insertions(+), 0 deletions(-)
diff --git a/arch/arm/boot/dts/exynos4-smdkv310.dts
b/arch/arm/boot/dts/exynos4-smdkv310.dts
index d65c18c..6fd2032 100644
--- a/arch/arm/boot/dts/exynos4-smdkv310.dts
+++ b/arch/arm/boot/dts/exynos4-smdkv310.dts
@@ -41,6 +41,12 @@
irq-start = <61>;
};
+ gpd1: gpio-controller@114000C0 {
+ compatible =
"samsung,exynos4-gpio-gpd1","samsung,exynos4-gpio";
+ #gpio-cells = <2>;
+ gpio-controller;
+ };
+
watchdog@10060000 {
compatible = "samsung,s3c2410-wdt";
reg = <0x10060000 0x400>;
@@ -64,5 +70,44 @@
samsung,sdhci-cd-type = <0>;
samsung,sdhci-clkdiv-external;
};
+
+ i2c@13860000 {
+ compatible = "samsung,s3c2440-i2c";
+ reg = <0x13860000 0x100>;
+ interrupts = <344>;
+ samsung,i2c-sda-delay = <100>;
+ samsung,i2c-max-bus-freq = <20000>;
+ gpios = <&gpd1 0 0 /* SDA */
+ &gpd1 1 0 /* SCL */>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ eeprom@50 {
+ compatible = "samsung,24ad0xd1";
+ reg = <0x50>;
+ };
+
+ eeprom@52 {
+ compatible = "samsung,24ad0xd1";
+ reg = <0x51>;
+ };
+ };
+
+ i2c@13870000 {
+ compatible = "samsung,s3c2440-i2c";
+ reg = <0x13870000 0x100>;
+ interrupts = <345>;
+ samsung,i2c-sda-delay = <100>;
+ samsung,i2c-max-bus-freq = <100000>;
+ gpios = <&gpd1 2 0 /* SDA */
+ &gpd1 3 0 /* SCL */>;
+ #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..06b43ca 100644
--- a/arch/arm/mach-exynos4/Kconfig
+++ b/arch/arm/mach-exynos4/Kconfig
@@ -193,6 +193,8 @@ config MACH_EXYNOS4_DT
select S3C_DEV_HSMMC
select S3C_DEV_HSMMC2
select EXYNOS4_SETUP_SDHCI
+ select EXYNOS4_SETUP_I2C0
+ 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..8b0cf8f 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>
@@ -63,6 +66,22 @@ static struct s3c2410_uartcfg smdkv310_uartcfgs[] __initdata
= {
};
/*
+ * The i2c driver does not handle the pinmux settings. Instead, the
+ * platform specific callback function is passed through the platform
+ * data that can handle the pinmux settings for the i2c module.
+ * Eventually, when the new pinmux api is merged, the i2c driver can
+ * be modified to handle the pinmux settings. This is temporary for
+ * now.
+ */
+static struct s3c2410_platform_i2c exynos4_dt_i2c_data0 __initdata = {
+ .cfg_gpio = s3c_i2c0_cfg_gpio,
+};
+
+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
* to supplied. The sdhci driver requires the device name to be overridden
@@ -75,6 +94,10 @@ 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(0),
+ "s3c2440-i2c.0", &exynos4_dt_i2c_data0),
+ OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(1),
+ "s3c2440-i2c.1", &exynos4_dt_i2c_data1),
{},
};
--
1.6.6.rc2
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