On Wed, May 23, 2018 at 11:57:25AM +0100, Robin Murphy wrote:

On 22/05/18 19:47, Ray Jui wrote:

quoted

Update the SP805 binding document to add optional 'timeout-sec'
devicetree property

Signed-off-by: Ray Jui <redacted>
Reviewed-by: Scott Branden <scott.branden@broadcom.com>
---
 Documentation/devicetree/bindings/watchdog/sp805-wdt.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/watchdog/sp805-wdt.txt b/Documentation/devicetree/bindings/watchdog/sp805-wdt.txt
index edc4f0e..f898a86 100644
--- a/Documentation/devicetree/bindings/watchdog/sp805-wdt.txt
+++ b/Documentation/devicetree/bindings/watchdog/sp805-wdt.txt

@@ -19,6 +19,8 @@ Required properties:
 Optional properties:
 - interrupts : Should specify WDT interrupt number.
+- timeout-sec : Should specify default WDT timeout in seconds. If unset, the
+                default timeout is 30 seconds

According to the SP805 TRM, the default interval is dependent on the rate of
WDOGCLK, but would typically be a lot longer than that :/

Depends on the definition of "default". In the context of watchdog drivers,
it is (or should be) a driver default, not a chip default.

Guenter

On a related note, anyone have any idea why we seem to have two subtly
different SP805 bindings defined?

Robin.

quoted

 Examples:

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