On Fri, Dec 11, 2015 at 05:17:46PM +0530, Bhupesh Sharma wrote:
> This patch adds a devicetree binding documentation for ARM's
> SP805 WatchDog Timer.
>
> Signed-off-by: Bhupesh Sharma <[email protected]>
> ---
> .../devicetree/bindings/watchdog/sp805-wdt.txt | 29
> ++++++++++++++++++++
> 1 file changed, 29 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/watchdog/sp805-wdt.txt
>
> diff --git a/Documentation/devicetree/bindings/watchdog/sp805-wdt.txt
> b/Documentation/devicetree/bindings/watchdog/sp805-wdt.txt
> new file mode 100644
> index 0000000..45b5afc
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/watchdog/sp805-wdt.txt
> @@ -0,0 +1,29 @@
> +* 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 for the 2nd clock?
> +
> +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";
> + };
> +
> --
> 1.7.9.5
>
>
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