From: Bhupesh Sharma Date: Mon, 28 Dec 2015 10:01:23 +0000 (+0530) Subject: Documentation: DT: Add entry for ARM SP805-WDT X-Git-Tag: v4.5-rc1~42^2~2 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=766faef1f4c0b37b2cb2c0de214dacf54e29ac05;p=karo-tx-linux.git Documentation: DT: Add entry for ARM SP805-WDT This patch adds a devicetree binding documentation for ARM's SP805 WatchDog Timer. Signed-off-by: Bhupesh Sharma Acked-by: Rob Herring Signed-off-by: Arnd Bergmann --- diff --git a/Documentation/devicetree/bindings/watchdog/sp805-wdt.txt b/Documentation/devicetree/bindings/watchdog/sp805-wdt.txt new file mode 100644 index 000000000000..edc4f0ea54a3 --- /dev/null +++ b/Documentation/devicetree/bindings/watchdog/sp805-wdt.txt @@ -0,0 +1,31 @@ +* ARM SP805 Watchdog Timer (WDT) Controller + +SP805 WDT is a ARM Primecell Peripheral and has a standard-id register that +can be used to identify the peripheral type, vendor, and revision. +This value can be used for driver matching. + +As SP805 WDT is a primecell IP, it follows the base bindings specified in +'arm/primecell.txt' + +Required properties: +- compatible : Should be "arm,sp805-wdt", "arm,primecell" +- reg : Base address and size of the watchdog timer registers. +- clocks : From common clock binding. + First clock is PCLK and the second is WDOGCLK. + WDOGCLK can be equal to or be a sub-multiple of the PCLK frequency. +- clock-names : From common clock binding. + Shall be "apb_pclk" for first clock and "wdog_clk" for the + second one. + +Optional properties: +- interrupts : Should specify WDT interrupt number. + +Examples: + + cluster1_core0_watchdog: wdt@c000000 { + compatible = "arm,sp805-wdt", "arm,primecell"; + reg = <0x0 0xc000000 0x0 0x1000>; + clocks = <&clockgen 4 3>, <&clockgen 4 3>; + clock-names = "apb_pclk", "wdog_clk"; + }; +