[PATCH v4 7/9] devicetree: bindings: Document PM8921/8058 keypads

Stephen Boyd
2014-02-28T01:56:07Z

Document the keypad device found on PM8921 and PM8058 PMICs.

Cc: <devicetree@vger.kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
---
.../bindings/input/qcom,pm8xxx-keypad.txt | 72 ++++++++++++++++++++++
1 file changed, 72 insertions(+)
create mode 100644 Documentation/devicetree/bindings/input/qcom,pm8xxx-keypad.txt

diff --git a/Documentation/devicetree/bindings/input/qcom,pm8xxx-keypad.txt b/Documentation/devicetree/bindings/input/qcom,pm8xxx-keypad.txt
new file mode 100644
index 000000000000..aa5a9c6cf512
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/qcom,pm8xxx-keypad.txt
@@ -0,0 +1,72 @@
+Qualcomm PM8xxx PMIC Keypad
+
+PROPERTIES
+
+- compatible:
+ Usage: required
+ Value type: <string>
+ Definition: must be one of:
+ "qcom,pm8058-keypad"
+ "qcom,pm8921-keypad"
+- interrupts:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: the first interrupt specifies the key sense interrupt
+ and the second interrupt specifies the key stuck interrupt.
+ The format of the specifier is defined by the binding
+ document describing the node's interrupt parent.
+
+- linux,keymap:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: the linux keymap. More information can be found in
+ input/matrix-keymap.txt.
+
+- keypad,num-rows:
+ Usage: required
+ Value type: <u32>
+ Definition: number of rows in the keymap. More information can be found
+ in input/matrix-keymap.txt.
+
+- keypad,num-columns:
+ Usage: required
+ Value type: <u32>
+ Definition: number of columns in the keymap. More information can be
+ found in input/matrix-keymap.txt.
+
+- debounce:
+ Usage: optional
+ Value type: <u32>
+ Definition: time in microseconds that key must be pressed or release
+ for key sense interrupt to trigger.
+
+- scan-delay:
+ Usage: optional
+ Value type: <u32>
+ Definition: time in microseconds to pause between successive scans
+ of the matrix array.
+
+- row-hold:
+ Usage: optional
+ Value type: <u32>
+ Definition: time in nanoseconds to pause between scans of each row in
+ the matrix array.
+
+EXAMPLE
+
+ keypad {
+ compatible = "qcom,pm8921-keypad";
+ interrupt-parent = <&pmicintc>;
+ interrupts = <74 1>, <75 1>;
+ linux,keymap = <
+ MATRIX_KEY(0, 0, KEY_VOLUMEUP)
+ MATRIX_KEY(0, 1, KEY_VOLUMEDOWN)
+ MATRIX_KEY(0, 2, KEY_CAMERA_FOCUS)
+ MATRIX_KEY(0, 3, KEY_CAMERA)
+ >;
+ keypad,num-rows = <1>;
+ keypad,num-columns = <5>;
+ debounce = <15>;
+ scan-delay = <32>;
+ row-hold = <91500>;
+ };