[PATCH 2/5 v4] ARM: at91: sam9g20 add i2c DT support

[Jean-Christophe PLAGNIOL-VILLARD]

For now on use i2c-gpio driver on the same pin as the hardware IP.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
Acked-by: Grant Likely <grant.likely at secretlab.ca>
Acked-by: Rob Herring <rob.herring at calxeda.com>
Cc: Nicolas Ferre <nicolas.ferre at atmel.com>
Cc: devicetree-discuss at lists.ozlabs.org
---
 arch/arm/boot/dts/at91sam9g20.dtsi |   13 +++++++++++++
 1 files changed, 13 insertions(+), 0 deletions(-)

diff --git a/arch/arm/boot/dts/at91sam9g20.dtsi b/arch/arm/boot/dts/at91sam9g20.dtsi
index 4b0dc99..a885a30 100644
--- a/arch/arm/boot/dts/at91sam9g20.dtsi
+++ b/arch/arm/boot/dts/at91sam9g20.dtsi
@@ -189,4 +189,17 @@
 			status = "disabled";
 		};
 	};
+
+	i2c at 0 {
+		compatible = "i2c-gpio";
+		gpios = <&pioA 23 0 /* sda */
+			 &pioA 24 0 /* scl */
+			>;
+		i2c-gpio,sda-open-drain;
+		i2c-gpio,scl-open-drain;
+		i2c-gpio,delay-us = <2>;	/* ~100 kHz */
+		#address-cells = <1>;
+		#size-cells = <0>;
+		status = "disabled";
+	};
 };
-- 
1.7.7