This is a note to let you know that I've just added the patch titled
regulator: anatop: Set default voltage selector for vddpu
to the 3.17-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
regulator-anatop-set-default-voltage-selector-for-vddpu.patch
and it can be found in the queue-3.17 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From fe08be3ec8672ed92b3ed1b85810df9fa0f98931 Mon Sep 17 00:00:00 2001
From: Markus Pargmann <[email protected]>
Date: Mon, 6 Oct 2014 21:33:36 +0200
Subject: regulator: anatop: Set default voltage selector for vddpu
From: Markus Pargmann <[email protected]>
commit fe08be3ec8672ed92b3ed1b85810df9fa0f98931 upstream.
The code reads the default voltage selector from its register. If the
bootloader disables the regulator, the default voltage selector will be
0 which results in faulty behaviour of this regulator driver.
This patch sets a default voltage selector for vddpu if it is not set in
the register.
Signed-off-by: Markus Pargmann <[email protected]>
Signed-off-by: Mark Brown <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/regulator/anatop-regulator.c | 8 ++++++++
1 file changed, 8 insertions(+)
--- a/drivers/regulator/anatop-regulator.c
+++ b/drivers/regulator/anatop-regulator.c
@@ -283,6 +283,14 @@ static int anatop_regulator_probe(struct
sreg->sel = 0;
sreg->bypass = true;
}
+
+ /*
+ * In case vddpu was disabled by the bootloader, we need to set
+ * a sane default until imx6-cpufreq was probed and changes the
+ * voltage to the correct value. In this case we set 1.25V.
+ */
+ if (!sreg->sel && !strcmp(sreg->name, "vddpu"))
+ sreg->sel = 22;
} else {
rdesc->ops = &anatop_rops;
}
Patches currently in stable-queue which might be from [email protected] are
queue-3.17/regulator-anatop-set-default-voltage-selector-for-vddpu.patch
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