[U-Boot] [PATCH 06/13] colibri_t20: add i2c support

Marcel Ziswiler
2015-07-06T08:20:32Z

From: Marcel Ziswiler <marcel.ziswiler@toradex.com>

Add I2C support in order to subsequently allow disabling the PMIC sleep
mode on low supply voltage.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
---
arch/arm/dts/tegra20-colibri.dts | 28 ++++++++++++++++++++++++++++
include/configs/colibri_t20.h | 4 ++++
2 files changed, 32 insertions(+)

diff --git a/arch/arm/dts/tegra20-colibri.dts b/arch/arm/dts/tegra20-colibri.dts
index ae40bad..42efcdc 100644
--- a/arch/arm/dts/tegra20-colibri.dts
+++ b/arch/arm/dts/tegra20-colibri.dts
@@ -11,6 +11,9 @@
};

aliases {
+ i2c0 = "/i2c at 7000d000";
+ i2c1 = "/i2c at 7000c000";
+ i2c2 = "/i2c at 7000c400";
usb0 = "/usb at c5008000";
usb1 = "/usb at c5000000";
usb2 = "/usb at c5004000";
@@ -52,6 +55,31 @@
};
};

+ /*
+ * GEN1_I2C: I2C_SDA/SCL on SODIMM pin 194/196 (e.g. RTC on carrier
+ * board)
+ */
+ i2c at 7000c000 {
+ status = "okay";
+ clock-frequency = <100000>;
+ };
+
+ /* GEN2_I2C: unused */
+
+ /* DDC_CLOCK/DATA on X3 pin 15/16 (e.g. display EDID) */
+ i2c at 7000c400 {
+ status = "okay";
+ clock-frequency = <100000>;
+ };
+
+ /*
+ * PWR_I2C: power I2C to PMIC and temperature sensor
+ */
+ i2c at 7000d000 {
+ status = "okay";
+ clock-frequency = <100000>;
+ };
+
sdhci at c8000600 {
status = "okay";
cd-gpios = <&gpio TEGRA_GPIO(C, 7) GPIO_ACTIVE_LOW>;
diff --git a/include/configs/colibri_t20.h b/include/configs/colibri_t20.h
index fce1411..c85fb9f 100644
--- a/include/configs/colibri_t20.h
+++ b/include/configs/colibri_t20.h
@@ -25,6 +25,10 @@

#define CONFIG_MACH_TYPE MACH_TYPE_COLIBRI_T20

+/* I2C */
+#define CONFIG_SYS_I2C_TEGRA
+#define CONFIG_CMD_I2C
+
/* SD/MMC support */
#define CONFIG_MMC
#define CONFIG_GENERIC_MMC
--
1.9.3