ARM: Kirkwood: topkick: Enable i2c bus.

Add a DT node for I2C and pinctrl hog for the pins. There appears to
be an i2c bus on topkick with a device on it:

i2cdetect 0
WARNING! This program can confuse your I2C bus, cause data loss and worse!
I will probe file /dev/i2c-0.
I will probe address range 0x03-0x77.
Continue? [Y/n] y
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- 64 -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

1 files changed, 6 insertions, 1 deletions

diff --git a/arch/arm/boot/dts/kirkwood-topkick.dts b/arch/arm/boot/dts/kirkwood-topkick.dts
index bb1d4df5c690..754f7efc0eec 100644
--- a/arch/arm/boot/dts/kirkwood-topkick.dts
+++ b/arch/arm/boot/dts/kirkwood-topkick.dts
@@ -52,7 +52,8 @@
                                       &pmx_sw_left2
                                       &pmx_led_wifi_yellow
                                       &pmx_uart0
-                                      &pmx_nand >;
+                                      &pmx_nand
+                                      &pmx_twsi0 >;
                         pinctrl-names = "default";
 
                         pmx_led_disk_yellow: pmx-led-disk-yellow {
@@ -144,6 +145,10 @@
                         status = "okay";
                         nr-ports = <1>;
                 };
+
+                i2c@11000 {
+                        status = "ok";
+                };
         };
 
         gpio-leds {