[PATCH 2/5 v3] ARM: at91: sam9g20 add i2c DT support

On 11:08 Thu 08 Mar     , Rob Herring wrote:

On 03/08/2012 02:50 AM, Jean-Christophe PLAGNIOL-VILLARD wrote:

quoted

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

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <redacted>
Cc: Nicolas Ferre <redacted>
Cc: devicetree-discuss at lists.ozlabs.org
---
v3:

	update i2c binding (Rob comments)

Best Regards,
J.
 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..072b2da 100644
--- a/arch/arm/boot/dts/at91sam9g20.dtsi
+++ b/arch/arm/boot/dts/at91sam9g20.dtsi

@@ -189,4 +189,17 @@
 			status = "disabled";
 		};
 	};
+> > +	i2c-gpio at 0 {

You updated the example, but not all the actual uses to i2c at 0.

on purpose as on some soc we will have HW and soft binding

on the board you put the alias

Best Regards,
J.

Rob

quoted

+		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";
+	};
 };

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