Thread (30 messages) 30 messages, 5 authors, 2014-11-03
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[PATCH 0/4] Make Armada 375 use the reference clock when possible

From: andrew@lunn.ch (Andrew Lunn)
Date: 2014-10-22 13:55:18
Also in: linux-watchdog

On Wed, Oct 22, 2014 at 10:34:40AM -0300, Ezequiel Garcia wrote:
This series adds support for the 25 MHz reference clock available on
Armada 375 SoC to use on the timer and watchdog drivers. It is
similar to the one present in Armada XP SoC.

Given we initially had access to only a very early SoC revision (A375 Z0)
and due to a hardware issue, the timer and watchdog support was originally
submitted to use the core clock.
Hi Ezequiel

What happens with Z0 when used with these patches? Do they continue to
work? Do these hardware issues cause a problem?
Now that the A0 SoC revision is out, we can fix this and use the reference
clock. The reason for this change is that the core clock is subject to the
SSCG, so boards where SSCG is enabled exhibit a very large timer drift.
It would of been nice to say what SSCG is. I had to go look it up.
However, since this is just in the cover note and not in the patches
itself, it is not important.

	Andrew
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