Hi Scott, On Thu, Feb 26, 2015 at 08:08:48AM -0800, Scott Branden wrote: > Documents the Broadcom keypad controller device tree bindings. > > Reviewed-by: Ray Jui <rjui@xxxxxxxxxxxx> > Signed-off-by: Scott Branden <sbranden@xxxxxxxxxxxx> > --- > .../devicetree/bindings/input/brcm,bcm-keypad.txt | 108 +++++++++++++++++++++ > 1 file changed, 108 insertions(+) > create mode 100644 Documentation/devicetree/bindings/input/brcm,bcm-keypad.txt > > diff --git a/Documentation/devicetree/bindings/input/brcm,bcm-keypad.txt b/Documentation/devicetree/bindings/input/brcm,bcm-keypad.txt > new file mode 100644 > index 0000000..e16bb2d > --- /dev/null > +++ b/Documentation/devicetree/bindings/input/brcm,bcm-keypad.txt > @@ -0,0 +1,108 @@ > +* Broadcom Keypad Controller device tree bindings > + > +Broadcom Keypad controller is used to interface a SoC with a matrix-type > +keypad device. The keypad controller supports multiple row and column lines. > +A key can be placed at each intersection of a unique row and a unique column. > +The keypad controller can sense a key-press and key-release and report the > +event using a interrupt to the cpu. > + > +This binding is based on the matrix-keymap binding with the following > +changes: > + > +keypad,num-rows and keypad,num-columns are required. > + > +Required SoC Specific Properties: > +- compatible: should be "brcm,bcm-keypad" > + > +- reg: physical base address of the controller and length of memory mapped > + region. > + > +- interrupts: The interrupt number to the cpu. > + > +Board Specific Properties: > +- keypad,num-rows: Number of row lines connected to the keypad > + controller. > + > +- keypad,num-columns: Number of column lines connected to the > + keypad controller. > + > +- col-debounce-filter-period: The debounce period for the Column filter. > + > + KEYPAD_DEBOUNCE_1_ms = 0 > + KEYPAD_DEBOUNCE_2_ms = 1 > + KEYPAD_DEBOUNCE_4_ms = 2 > + KEYPAD_DEBOUNCE_8_ms = 3 > + KEYPAD_DEBOUNCE_16_ms = 4 > + KEYPAD_DEBOUNCE_32_ms = 5 > + KEYPAD_DEBOUNCE_64_ms = 6 > + KEYPAD_DEBOUNCE_128_ms = 7 > + > +- status-debounce-filter-period: The debounce period for the Status filter. > + > + KEYPAD_DEBOUNCE_1_ms = 0 > + KEYPAD_DEBOUNCE_2_ms = 1 > + KEYPAD_DEBOUNCE_4_ms = 2 > + KEYPAD_DEBOUNCE_8_ms = 3 > + KEYPAD_DEBOUNCE_16_ms = 4 > + KEYPAD_DEBOUNCE_32_ms = 5 > + KEYPAD_DEBOUNCE_64_ms = 6 > + KEYPAD_DEBOUNCE_128_ms = 7 > + > +- row-output-enabled: An optional property indicating whether the row or > + column is being used as output. If specified the row is being used > + as the output. Else defaults to column. > + > +- pull-up-enabled: An optional property indicating the Keypad scan mode. > + If specified implies the keypad scan pull-up has been enabled. > + > +- linux,keypad-no-autorepeat: An optional property indicating to > + not enable autorepeat feature. Unfortunately we've accumulated a lot of bindings for turning autorepeat on or off, I would prefer if we standardize on what gpio-keys is doing and use "autorepeat" (no "linux,") for new drivers. Thanks. -- Dmitry -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
