[RFC PATCH 2/4] watchdog: at91sam9_wdt: update device tree doc
From: Yang, Wenyou <hidden>
Date: 2013-06-21 01:42:42
Also in:
linux-devicetree, linux-watchdog, lkml
quoted hunk ↗ jump to hunk
-----Original Message----- From: linux-arm-kernel [mailto:linux-arm-kernel-bounces at lists.infradead.org] On Behalf Of Boris BREZILLON Sent: 2013?6?11? 18:51 To: Wim Van Sebroeck; Jean-Christophe Plagniol-Villard; Ferre, Nicolas Cc: linux-watchdog at vger.kernel.org; linux-doc at vger.kernel.org; devicetree-discuss at lists.ozlabs.org; linux-kernel at vger.kernel.org; Rob Herring; Boris BREZILLON; Rob Landley; Grant Likely; linux-arm-kernel at lists.infradead.org Subject: [RFC PATCH 2/4] watchdog: at91sam9_wdt: update device tree doc Add new at91sam9 watchdog properties to the documentation. Signed-off-by: Boris BREZILLON <redacted> --- .../devicetree/bindings/watchdog/atmel-wdt.txt | 30 ++++++++++++++++++-- 1 file changed, 28 insertions(+), 2 deletions(-)diff --git a/Documentation/devicetree/bindings/watchdog/atmel-wdt.txtb/Documentation/devicetree/bindings/watchdog/atmel-wdt.txt index fcdd48f..e043106 100644--- a/Documentation/devicetree/bindings/watchdog/atmel-wdt.txt +++ b/Documentation/devicetree/bindings/watchdog/atmel-wdt.txt@@ -9,11 +9,37 @@ Required properties: Optional properties: - timeout-sec: contains the watchdog timeout in seconds. +- interrupts : Should contain WDT interrupt. +- atmel,max-heartbeat-sec : Should contain the maximum heartbeat value in + seconds. This value should be less than 16. It is used to compute the + WDV field. +- atmel,max-heartbeat-sec : Should contain the minimum heartbeat value in
Typo, should be, - atmel,min-heartbeat-sec
+ seconds. This value should be less than 4 times the max-heartbeat-sec
+ value. It is used to compute the WDD field.
+- atmel,watchdog-type : Should be "hardware" or "software". Hardware
watchdog
+ use the at91 watchdog reset. Software watchdog use the watcdog
interrup
+ to trigger a software reset.
+- atmel,reset-type : Should be "proc" or "all".
+ "all" : assert peripherals and processor reset signals
+ "proc" : assert the processor reset signal
+ This is valid only when using "hardware" watchdog.
+- atmel,disable : Should be present if you want to disable the watchdog.
+- atmel,idle-halt : Should be present if you want to stop the watchdog when
+ entering idle state.
+- atmel,dbg-halt : Should be present if you want to stop the watchdog when
+ entering debug state.
Example:
-
watchdog at fffffd40 {
compatible = "atmel,at91sam9260-wdt";
reg = <0xfffffd40 0x10>;
- timeout-sec = <10>;
+ interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
+ timeout-sec = <15>;
+ atmel,watchdog-type = "hardware";
+ atmel,reset-type = "all";
+ atmel,dbg-halt;
+ atmel,idle-halt;
+ atmel,max-heartbeat-sec = <16>;
+ atmel,min-heartbeat-sec = <0>;
+ status = "okay";
};
--
1.7.9.5
Best Regards, Wenyou Yang
_______________________________________________ linux-arm-kernel mailing list linux-arm-kernel at lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel