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[v3,1/2] Documentation: DT: Add entry for ARM SP805-WDT

Message ID 1450189825-29065-2-git-send-email-bhupesh.sharma@freescale.com (mailing list archive)
State New, archived
Headers show

Commit Message

bhupesh.sharma@freescale.com Dec. 15, 2015, 2:30 p.m. UTC 
This patch adds a devicetree binding documentation for ARM's
SP805 WatchDog Timer.

Signed-off-by: Bhupesh Sharma <bhupesh.sharma@freescale.com>
---
 .../devicetree/bindings/watchdog/sp805-wdt.txt     |   29 ++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/watchdog/sp805-wdt.txt

Comments

Rob Herring Dec. 20, 2015, 3:38 a.m. UTC | #1 
On Tue, Dec 15, 2015 at 08:00:24PM +0530, Bhupesh Sharma wrote:
> This patch adds a devicetree binding documentation for ARM's
> SP805 WatchDog Timer.
> 
> Signed-off-by: Bhupesh Sharma <bhupesh.sharma@freescale.com>
> ---
>  .../devicetree/bindings/watchdog/sp805-wdt.txt     |   29 ++++++++++++++++++++
>  1 file changed, 29 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/watchdog/sp805-wdt.txt

Acked-by: Rob Herring <robh@kernel.org>
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Patch

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.
+
+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";
+		};
+