[RFC] adding hwmon support to sequoia device tree

[Matthias Fuchs <matthias.fuchs@esd-electronics.com>]

Hi,

I added support for the Sequoia on-board I2C temperature sensor to the device.
I am not sure if there is any node naming convention for such devices.
The needed I2C driver can be found under drivers/hwmon in the kernel sources,
so I found "hwmon" suitable for the node.

Do we want to add this to the sequoia dts file? If this is how it should be done,
I will commit a proper patch.


diff --git a/arch/powerpc/boot/dts/sequoia.dts b/arch/powerpc/boot/dts/sequoia.dts
index 72d15f0..82fdfdf 100644
--- a/arch/powerpc/boot/dts/sequoia.dts
+++ b/arch/powerpc/boot/dts/sequoia.dts
@@ -246,13 +246,23 @@
                        };

                        IIC0: i2c@ef600700 {
+                               #address-cells = <1>;
+                               #size-cells = <0>;
                                compatible = "ibm,iic-440epx", "ibm,iic";
                                reg = <0xef600700 0x00000014>;
                                interrupt-parent = <&UIC0>;
                                interrupts = <0x2 0x4>;
+
+                               hwmon@48 {
+                                       device_type = "hwmon";
+                                       compatible = "analog,ad7414";
+                                       reg = <0x48>;
+                               };
                        };

                        IIC1: i2c@ef600800 {
+                               #address-cells = <1>;
+                               #size-cells = <0>;
(prepare for adding devices on the 2nd I2C also)

                                compatible = "ibm,iic-440epx", "ibm,iic";
                                reg = <0xef600800 0x00000014>;
                                interrupt-parent = <&UIC0>;


Matthias