Hello. On 04/24/2014 06:33 PM, Tomi Valkeinen wrote:
omap5-uevm has a tca6424a I/O expander. Add it to the .dts file.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx> Cc: Tony Lindgren <tony@xxxxxxxxxxx> --- arch/arm/boot/dts/omap5-uevm.dts | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/arch/arm/boot/dts/omap5-uevm.dts b/arch/arm/boot/dts/omap5-uevm.dts index 3b99ec25b748..9e7581eaeb23 100644 --- a/arch/arm/boot/dts/omap5-uevm.dts +++ b/arch/arm/boot/dts/omap5-uevm.dts @@ -434,6 +434,13 @@ pinctrl-0 = <&i2c5_pins>; clock-frequency = <400000>; + + tca6424a: tca6424a@22 {
The ePAPR standard [1] says: "The name of a node should be somewhat generic, reflecting the function of the device and not its precise programming model. If appropriate, the name should be one of the following choices: [...] - gpio;"
Right. I wonder what the name should be... "gpio" is out, as the name should be more specific.
No, it's not out. The name should be "gpio@22", I think it would be unique.
We already have gpio1-8, which are the gpio banks from the SoC.
I don't understand why you are indexing the names while you probably have the address part after @ that makes them unique already.
Tomi
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