From: Juergen Beisert <jbe@pengutronix.de>
To: barebox@lists.infradead.org
Subject: RFC, i.MX28 related
Date: Fri, 8 Feb 2013 09:54:00 +0100 [thread overview]
Message-ID: <201302080954.00450.jbe@pengutronix.de> (raw)
Hi list,
the i.MX28 SoC has a nice "feature" which prevents the "intended" usage of its
watchdog.
When the SoC is powered via its 5 V power supply input the watchdog triggers a
simple system reset when it barks. But when the SoC is powered via the
battery supply input only, the watchdog powers off the whole chip instead,
because it resets the PMIC.
But we are in luck: a register bit exists to select a system reset or power
off for the battery powered case when the watchdog barks. It only defaults to
the power off setting after reset.
Should we re-program this bit to the system reset setting for all i.MX28 based
system (e.g. in the i.MX28 generic part of Barebox) or better on a board by
board base?
jbe
--
Pengutronix e.K. | Juergen Beisert |
Linux Solutions for Science and Industry | http://www.pengutronix.de/ |
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