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    SubjectRe: [PATCHv4 1/2] drivers: input: keypad: Add device tree support
    Hi Russell and Sourav,

    On 04/25/2012 12:52 PM, Russell King - ARM Linux wrote:
    > I think you and Roland Stigge need to put your heads together and come
    > up with a common DT binding for matrix keypad devices, rather than
    > inventing N different platform specific bindings.
    >
    >> +Required Board Specific Properties, in addition to those specified by
    >> +the shared matrix-keyboard bindings:
    >> +- keypad,num-rows: Number of row lines connected to the keypad
    >> + controller.
    >> +
    >> +- keypad,num-columns: Number of column lines connected to the
    >> + keypad controller.

    Right - the LPC32xx key scanner always has a square matrix design (#rows
    == #cols), but I'm fine with re-using properties "keypad,num-rows" and
    "keypad,num-columns" instead of "nxp,matrix-size".

    Besides, I still have "nxp,debounce-delay-ms" and "nxp,scan-delay-ms" -
    do I need to change this to some default properties I don't know of (yet)?

    And: I re-used the DT subnodes strategy for the keycodes ("linux,code")
    of the samsung-keypad driver, see
    Documentation/devicetree/bindings/input/samsung-keypad.txt - can I
    continue using it?

    Thanks in advance,

    Roland


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