tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1* Renesas R-Car Timer Unit (TMU)
2
3The TMU is a 32-bit timer/counter with configurable clock inputs and
4programmable compare match.
5
6Channels share hardware resources but their counter and compare match value
7are independent. The TMU hardware supports up to three channels.
8
9Required Properties:
10
11 - compatible: must contain one or more of the following:
12 - "renesas,tmu-r8a7779" for the r8a7779 TMU
13 - "renesas,tmu" for any TMU.
14 This is a fallback for the above renesas,tmu-* entries
15
16 - reg: base address and length of the registers block for the timer module.
17
18 - interrupts: interrupt-specifier for the timer, one per channel.
19
20 - clocks: a list of phandle + clock-specifier pairs, one for each entry
21 in clock-names.
22 - clock-names: must contain "fck" for the functional clock.
23
24Optional Properties:
25
26 - #renesas,channels: number of channels implemented by the timer, must be 2
27 or 3 (if not specified the value defaults to 3).
28
29
30Example: R8A7779 (R-Car H1) TMU0 node
31
32 tmu0: timer@ffd80000 {
33 compatible = "renesas,tmu-r8a7779", "renesas,tmu";
34 reg = <0xffd80000 0x30>;
35 interrupts = <0 32 IRQ_TYPE_LEVEL_HIGH>,
36 <0 33 IRQ_TYPE_LEVEL_HIGH>,
37 <0 34 IRQ_TYPE_LEVEL_HIGH>;
38 clocks = <&mstp0_clks R8A7779_CLK_TMU0>;
39 clock-names = "fck";
40
41 #renesas,channels = <3>;
42 };