Hi Stefano,
On Thu, 2013-11-07 at 09:19 +0100, Stefano Babic wrote:
Hi Giuseppe,
On 06/11/2013 21:44, Giuseppe Pagano wrote:
To have watchdog quiet during kernel boot it is necessary to change gpio wdt trigger direction.
Sorry, this is not a good explanation. You force a GPIO to drop a feture, instead of disabling the feature itself. And maybe some other people want to have this feature enabled.
Which is the timeout for the watchdog ? Why is it hitting too soon ?
Fix should be not done simply removing the effect, but checking the cause.
I know, my explanation was poor. uDoo use APX823-31W5 as watchdog chip. Timeout is about 1.2 seconds. To disabled watchdog during kernel boot, WDI pin of that chip needs to be in "high impedance" state. As far as I known mx6 gpio configuration does not contemplate tristate, so the option I choose is to set pin as input and in "high impedance". If wdt gpio is leaved as output che chip resets.
Best regards, Stefano Babic
Best regards, Giuseppe Pagano