[v3,2/5] ARM: kirkwood: Add i2c alias so setting bus number

Commit Message

Andrew Lunn Feb. 25, 2014, 5:34 p.m. UTC

When using platform_driver instantiation, the i2c bus was given bus
number 0. The kirkwood-t5325 audio driver has this bus number hard
coded for the address of the codec. However by default device tree i2c
busses are dynamically allocated a bus number, starting from 1. Thus
the kirkwood-t5325 cannot find its audio codec. By adding an alias in
the DT file we can control the bus number and set it to 0. The codec
can then be found.

Signed-off-by: Andrew Lunn <[e-mail]>
---
 arch/arm/boot/dts/kirkwood.dtsi | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Patch

diff --git a/arch/arm/boot/dts/kirkwood.dtsi b/arch/arm/boot/dts/kirkwood.dtsi
index 5a86fa820e12..90384587c278 100644
--- a/arch/arm/boot/dts/kirkwood.dtsi
+++ b/arch/arm/boot/dts/kirkwood.dtsi
@@ -24,6 +24,7 @@ 
 	aliases {
 	       gpio0 = &gpio0;
 	       gpio1 = &gpio1;
+	       i2c0 = &i2c0;
 	};
 
 	mbus {
@@ -111,7 +112,7 @@ 
 			clocks = <&gate_clk 7>;
 		};
 
-		i2c@11000 {
+		i2c0: i2c@11000 {
 			compatible = "marvell,mv64xxx-i2c";
 			reg = <0x11000 0x20>;
 			#address-cells = <1>;