summaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree/bindings/timer/renesas,16bit-timer.txt
blob: e8792447a199bdb59ee55790dab79b9476a319f0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
* Renesas H8/300 16bit timer

The 16bit timer is a 16bit timer/counter with configurable clock inputs and
programmable compare match.

Required Properties:

  - compatible: must contain "renesas,16bit-timer"
  - reg: base address and length of the registers block for the timer module.
  - interrupts: interrupt-specifier for the timer, IMIA
  - clocks: a list of phandle, one for each entry in clock-names.
  - clock-names: must contain "peripheral_clk" for the functional clock.
  - renesas,channel: timer channel number.

Example:

	timer16: timer@ffff68 {
		compatible = "reneas,16bit-timer";
		reg = <0xffff68 8>, <0xffff60 8>;
		interrupts = <24>;
		renesas,channel = <0>;
		clocks = <&pclk>;
		clock-names = "peripheral_clk";
	};
re of Linux input subsystem. - label: String, name of the input device. Each button (key) is represented as a sub-node of "gpio-keys": Subnode properties: - gpios: OF device-tree gpio specification. - interrupts: the interrupt line for that input. - label: Descriptive name of the key. - linux,code: Keycode to emit. Note that either "interrupts" or "gpios" properties can be omitted, but not both at the same time. Specifying both properties is allowed. Optional subnode-properties: - linux,input-type: Specify event type this button/key generates. If not specified defaults to <1> == EV_KEY. - debounce-interval: Debouncing interval time in milliseconds. If not specified defaults to 5. - wakeup-source: Boolean, button can wake-up the system. (Legacy property supported: "gpio-key,wakeup") - wakeup-event-action: Specifies whether the key should wake the system when asserted, when deasserted, or both. This property is only valid for keys that wake up the system (e.g., when the "wakeup-source" property is also provided). Supported values are defined in linux-event-codes.h: EV_ACT_ASSERTED - asserted EV_ACT_DEASSERTED - deasserted EV_ACT_ANY - both asserted and deasserted - linux,can-disable: Boolean, indicates that button is connected to dedicated (not shared) interrupt which can be disabled to suppress events from the button. Example nodes: gpio-keys { compatible = "gpio-keys"; autorepeat; up { label = "GPIO Key UP"; linux,code = <103>; gpios = <&gpio1 0 1>; }; down { label = "GPIO Key DOWN"; linux,code = <108>; interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>; }; ...