[PATCH v4] Input: matrix-keypad - Add device tree support

[Stephen Warren]

On 11/07/2012 02:32 AM, AnilKumar Ch wrote:
> Add device tree support to matrix keypad driver and usage details
> are added to device tree documentation. Driver was tested on AM335x
> EVM.

> diff --git a/Documentation/devicetree/bindings/input/gpio-matrix-keypad.txt b/Documentation/devicetree/bindings/input/gpio-matrix-keypad.txt

> +Optional Properties:

> +- clustered-irq:	have clustered irq number, that is needed if the irq
> +			is a combined irq source for the whole matrix keypad.
> +			This is useful if rows and columns of the keypad are
> +			connected to a GPIO expander.
> +- clustered-irq-flags:	clustered irq flags to specify the interrupt line
> +			behaviour among IRQF_TRIGGER_*

I still don't understand why there's a need for a clustered-irq-flags
property; if those flags are the flags for an interrupt, why aren't the
flags part of the clustered-irq interrupt specifier, just like any other
interrupt in DT?