Hi Dmitry,
On 15-02-27 03:39 PM, Dmitry Torokhov wrote:
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.
OK. I can change it.
Thanks.
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