From cca8d0596c4c7acb371ea1bc5eee9b404b30516a Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Tue, 4 Mar 2014 18:28:26 +0100 Subject: [PATCH] clocksource: sh_mtu2: Add DT support Document DT bindings and parse them in the MTU2 driver. Signed-off-by: Laurent Pinchart Tested-by: Wolfram Sang --- .../bindings/timer/renesas,mtu2.txt | 39 +++++++++++++++++++ drivers/clocksource/sh_mtu2.c | 8 ++++ 2 files changed, 47 insertions(+) create mode 100644 Documentation/devicetree/bindings/timer/renesas,mtu2.txt diff --git a/Documentation/devicetree/bindings/timer/renesas,mtu2.txt b/Documentation/devicetree/bindings/timer/renesas,mtu2.txt new file mode 100644 index 000000000000..917453f826bc --- /dev/null +++ b/Documentation/devicetree/bindings/timer/renesas,mtu2.txt @@ -0,0 +1,39 @@ +* Renesas R-Car Multi-Function Timer Pulse Unit 2 (MTU2) + +The MTU2 is a multi-purpose, multi-channel timer/counter with configurable +clock inputs and programmable compare match. + +Channels share hardware resources but their counter and compare match value +are independent. The MTU2 hardware supports five channels indexed from 0 to 4. + +Required Properties: + + - compatible: must contain "renesas,mtu2" + + - reg: base address and length of the registers block for the timer module. + + - interrupts: interrupt specifiers for the timer, one for each entry in + interrupt-names. + - interrupt-names: must contain one entry named "tgi?a" for each enabled + channel, where "?" is the channel index expressed as one digit from "0" to + "4". + + - clocks: a list of phandle + clock-specifier pairs, one for each entry + in clock-names. + - clock-names: must contain "fck" for the functional clock. + + +Example: R7S72100 (RZ/A1H) MTU2 node + + mtu2: timer@fcff0000 { + compatible = "renesas,mtu2"; + reg = <0xfcff0000 0x400>; + interrupts = <0 139 IRQ_TYPE_LEVEL_HIGH>, + <0 146 IRQ_TYPE_LEVEL_HIGH>, + <0 150 IRQ_TYPE_LEVEL_HIGH>, + <0 154 IRQ_TYPE_LEVEL_HIGH>, + <0 159 IRQ_TYPE_LEVEL_HIGH>; + interrupt-names = "tgi0a", "tgi1a", "tgi2a", "tgi3a", "tgi4a"; + clocks = <&mstp3_clks R7S72100_CLK_MTU2>; + clock-names = "fck"; + }; diff --git a/drivers/clocksource/sh_mtu2.c b/drivers/clocksource/sh_mtu2.c index b0c229f4b4c6..3d88698cf2b8 100644 --- a/drivers/clocksource/sh_mtu2.c +++ b/drivers/clocksource/sh_mtu2.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include #include @@ -500,11 +501,18 @@ static const struct platform_device_id sh_mtu2_id_table[] = { }; MODULE_DEVICE_TABLE(platform, sh_mtu2_id_table); +static const struct of_device_id sh_mtu2_of_table[] __maybe_unused = { + { .compatible = "renesas,mtu2" }, + { } +}; +MODULE_DEVICE_TABLE(of, sh_mtu2_of_table); + static struct platform_driver sh_mtu2_device_driver = { .probe = sh_mtu2_probe, .remove = sh_mtu2_remove, .driver = { .name = "sh_mtu2", + .of_match_table = of_match_ptr(sh_mtu2_of_table), }, .id_table = sh_mtu2_id_table, }; -- 2.20.1