From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bhupesh Sharma Subject: [PATCH v4 1/2] Documentation: DT: Add entry for ARM SP805-WDT Date: Mon, 28 Dec 2015 15:31:23 +0530 Message-ID: <1451296884-7932-2-git-send-email-bhupesh.sharma@freescale.com> References: <1451296884-7932-1-git-send-email-bhupesh.sharma@freescale.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1451296884-7932-1-git-send-email-bhupesh.sharma@freescale.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: arm@kernel.org, shawnguo@kernel.org, arnd@arndb.de, mark.rutland@arm.com, linux-arm-kernel@lists.infradead.org, olof@lixom.net, devicetree@vger.kernel.org, robh@kernel.org, will.deacon@arm.com Cc: LeoLi@freescale.com, bhupesh.sharma@freescale.com, Catalin.Marinas@arm.com, stuart.yoder@freescale.com, scottwood@freescale.com, bhupesh.linux@gmail.com List-Id: devicetree@vger.kernel.org This patch adds a devicetree binding documentation for ARM's SP805 WatchDog Timer. Signed-off-by: Bhupesh Sharma Acked-by: Rob Herring --- .../devicetree/bindings/watchdog/sp805-wdt.txt | 31 ++++++++++++++++++++ 1 file changed, 31 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..edc4f0e --- /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"; + }; + -- 1.7.9.5