ARM: at91: usb_a9g20 add DT i2c support

Use i2c-gpio and enable rv3029 RTC.

Enable the rtc in the sam9g20 defconfig.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>

diff --git a/arch/arm/boot/dts/usb_a9g20.dts b/arch/arm/boot/dts/usb_a9g20.dts
index 71d83ef..0ea90b5 100644 (file)
--- a/arch/arm/boot/dts/usb_a9g20.dts
+++ b/arch/arm/boot/dts/usb_a9g20.dts
@@ -97,4 +97,13 @@
                        gpio-key,wakeup;
                };
        };
+
+       i2c@0 {
+               status = "okay";
+
+               rv3029c2@56 {
+                       compatible = "rv3029c2";
+                       reg = <0x56>;
+               };
+       };
 };

diff --git a/arch/arm/configs/at91sam9g20_defconfig b/arch/arm/configs/at91sam9g20_defconfig
index 9123568..994d331 100644 (file)
--- a/arch/arm/configs/at91sam9g20_defconfig
+++ b/arch/arm/configs/at91sam9g20_defconfig
@@ -74,6 +74,8 @@ CONFIG_LEGACY_PTY_COUNT=16
 CONFIG_SERIAL_ATMEL=y
 CONFIG_SERIAL_ATMEL_CONSOLE=y
 CONFIG_HW_RANDOM=y
+CONFIG_I2C=y
+CONFIG_I2C_GPIO=y
 CONFIG_SPI=y
 CONFIG_SPI_ATMEL=y
 CONFIG_SPI_SPIDEV=y
@@ -105,6 +107,7 @@ CONFIG_LEDS_TRIGGERS=y
 CONFIG_LEDS_TRIGGER_TIMER=y
 CONFIG_LEDS_TRIGGER_HEARTBEAT=y
 CONFIG_RTC_CLASS=y
+CONFIG_RTC_DRV_RV3029C2=y
 CONFIG_RTC_DRV_AT91SAM9=y
 CONFIG_EXT2_FS=y
 CONFIG_MSDOS_FS=y