tjh.dev
Linux kernel mirror (for testing)
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linux
1MediaTek MT6397/MT6323 PMIC Keys Device Driver
2
3There are two key functions provided by MT6397/MT6323 PMIC, pwrkey
4and homekey. The key functions are defined as the subnode of the function
5node provided by MT6397/MT6323 PMIC that is being defined as one kind
6of Muti-Function Device (MFD)
7
8For MT6397/MT6323 MFD bindings see:
9Documentation/devicetree/bindings/mfd/mt6397.txt
10
11Required properties:
12- compatible: "mediatek,mt6397-keys" or "mediatek,mt6323-keys"
13- linux,keycodes: See Documentation/devicetree/bindings/input/keys.txt
14
15Optional Properties:
16- wakeup-source: See Documentation/devicetree/bindings/power/wakeup-source.txt
17- mediatek,long-press-mode: Long press key shutdown setting, 1 for
18 pwrkey only, 2 for pwrkey/homekey together, others for disabled.
19- power-off-time-sec: See Documentation/devicetree/bindings/input/keys.txt
20
21Example:
22
23 pmic: mt6397 {
24 compatible = "mediatek,mt6397";
25
26 ...
27
28 mt6397keys: mt6397keys {
29 compatible = "mediatek,mt6397-keys";
30 mediatek,long-press-mode = <1>;
31 power-off-time-sec = <0>;
32
33 power {
34 linux,keycodes = <116>;
35 wakeup-source;
36 };
37
38 home {
39 linux,keycodes = <114>;
40 };
41 };
42
43 };