[PATCH 5/5 v3] ARM: at91: sam9x5 add i2c DT support
Jean-Christophe PLAGNIOL-VILLARD
plagnioj at jcrosoft.com
Thu Mar 8 03:50:35 EST 2012
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>
Cc: Nicolas Ferre <nicolas.ferre at atmel.com>
Cc: devicetree-discuss at lists.ozlabs.org
---
v3:
update i2c binding (Rob comments)
Best Regards,
J.
arch/arm/boot/dts/at91sam9x5.dtsi | 39 +++++++++++++++++++++++++++++++++++++
1 files changed, 39 insertions(+), 0 deletions(-)
diff --git a/arch/arm/boot/dts/at91sam9x5.dtsi b/arch/arm/boot/dts/at91sam9x5.dtsi
index c294657..fdd1ac6 100644
--- a/arch/arm/boot/dts/at91sam9x5.dtsi
+++ b/arch/arm/boot/dts/at91sam9x5.dtsi
@@ -188,4 +188,43 @@
status = "disabled";
};
};
+
+ i2c-gpio at 0 {
+ compatible = "i2c-gpio";
+ gpios = <&pioA 30 0 /* sda */
+ &pioA 31 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";
+ };
+
+ i2c-gpio at 1 {
+ compatible = "i2c-gpio";
+ gpios = <&pioC 0 0 /* sda */
+ &pioC 1 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";
+ };
+
+ i2c-gpio at 2 {
+ compatible = "i2c-gpio";
+ gpios = <&pioB 4 0 /* sda */
+ &pioB 5 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
More information about the linux-arm-kernel
mailing list