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colibri_t20: add i2c support 

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>
Signed-off-by: Tom Warren <twarren@nvidia.com>
This commit is contained in:
Marcel Ziswiler 2015-08-06 00:47:03 +02:00 committed by Tom Warren
parent b2ea19b522
commit c1faf0024c
2 changed files with 32 additions and 0 deletions
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28
arch/arm/dts/tegra20-colibri.dts
View File

@ -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>;

4
include/configs/colibri_t20.h
View File

@ -21,6 +21,10 @@
#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