Re: [PATCH v1] ARM: tegra: Fix sd4 regulator in Jetson TK1 device tree

From: Stephen Warren
Date: Mon Sep 22 2014 - 15:05:49 EST


On 09/22/2014 11:57 AM, Vidya Sagar wrote:
sd4 is an always on regulator which is turned on at boot time.
It is externally controller through gpio. This change
reflects the same in Jetson TK1 device tree

In the schematics, the "Power Sequencing" timing diagram says "S/W controlled" for SD4/+1.05V_RUN. I also don't see an "ENABLE1" pin on the AS3722, which would be required for ...

+ ams,ext-control = <1>;

... to be valid.

What's the source of information behind this change?

What symptoms does this patch correct?
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