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 Reviewed-by: Simon Glass sjg@chromium.org Acked-by: Stephen Warren swarren@nvidia.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 bf14c6b..8eaac4f 100644 --- a/arch/arm/dts/tegra20-colibri.dts +++ b/arch/arm/dts/tegra20-colibri.dts @@ -11,6 +11,9 @@ };
aliases { + i2c0 = "/i2c@7000d000"; + i2c1 = "/i2c@7000c000"; + i2c2 = "/i2c@7000c400"; usb0 = "/usb@c5008000"; usb1 = "/usb@c5000000"; usb2 = "/usb@c5004000"; @@ -52,6 +55,31 @@ }; };
+ /* + * GEN1_I2C: I2C_SDA/SCL on SODIMM pin 194/196 (e.g. RTC on carrier + * board) + */ + i2c@7000c000 { + status = "okay"; + clock-frequency = <100000>; + }; + + /* GEN2_I2C: unused */ + + /* DDC_CLOCK/DATA on X3 pin 15/16 (e.g. display EDID) */ + i2c@7000c400 { + status = "okay"; + clock-frequency = <100000>; + }; + + /* + * PWR_I2C: power I2C to PMIC and temperature sensor + */ + i2c@7000d000 { + status = "okay"; + clock-frequency = <100000>; + }; + sdhci@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 ec3ba2c..2eb043a 100644 --- a/include/configs/colibri_t20.h +++ b/include/configs/colibri_t20.h @@ -22,6 +22,10 @@
#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