From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- .../devicetree/bindings/timer/renesas,tmu.txt | 44 ++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 Documentation/devicetree/bindings/timer/renesas,tmu.txt (limited to 'Documentation/devicetree/bindings/timer/renesas,tmu.txt') diff --git a/Documentation/devicetree/bindings/timer/renesas,tmu.txt b/Documentation/devicetree/bindings/timer/renesas,tmu.txt new file mode 100644 index 000000000..cd5f20bf2 --- /dev/null +++ b/Documentation/devicetree/bindings/timer/renesas,tmu.txt @@ -0,0 +1,44 @@ +* Renesas R-Mobile/R-Car Timer Unit (TMU) + +The TMU is a 32-bit timer/counter with configurable clock inputs and +programmable compare match. + +Channels share hardware resources but their counter and compare match value +are independent. The TMU hardware supports up to three channels. + +Required Properties: + + - compatible: must contain one or more of the following: + - "renesas,tmu-r8a7740" for the r8a7740 TMU + - "renesas,tmu-r8a7778" for the r8a7778 TMU + - "renesas,tmu-r8a7779" for the r8a7779 TMU + - "renesas,tmu" for any TMU. + This is a fallback for the above renesas,tmu-* entries + + - reg: base address and length of the registers block for the timer module. + + - interrupts: interrupt-specifier for the timer, one per channel. + + - clocks: a list of phandle + clock-specifier pairs, one for each entry + in clock-names. + - clock-names: must contain "fck" for the functional clock. + +Optional Properties: + + - #renesas,channels: number of channels implemented by the timer, must be 2 + or 3 (if not specified the value defaults to 3). + + +Example: R8A7779 (R-Car H1) TMU0 node + + tmu0: timer@ffd80000 { + compatible = "renesas,tmu-r8a7779", "renesas,tmu"; + reg = <0xffd80000 0x30>; + interrupts = <0 32 IRQ_TYPE_LEVEL_HIGH>, + <0 33 IRQ_TYPE_LEVEL_HIGH>, + <0 34 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&mstp0_clks R8A7779_CLK_TMU0>; + clock-names = "fck"; + + #renesas,channels = <3>; + }; -- cgit v1.2.3