This is a note to let you know that I've just added the patch titled
ARM: dts: sunxi: Raise minimum CPU voltage for sun7i-a20 to meet SoC specifications
to the 4.2-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:
arm-dts-sunxi-raise-minimum-cpu-voltage-for-sun7i-a20-to-meet-soc-specifications.patch
and it can be found in the queue-4.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From eaeef1ad9b6ea6df1d1220c254d9563da60cb9d1 Mon Sep 17 00:00:00 2001
From: Timo Sigurdsson <public_timo.s@xxxxxxxxxxxxxx>
Date: Tue, 4 Aug 2015 23:08:01 +0200
Subject: ARM: dts: sunxi: Raise minimum CPU voltage for sun7i-a20 to meet SoC specifications
From: Timo Sigurdsson <public_timo.s@xxxxxxxxxxxxxx>
commit eaeef1ad9b6ea6df1d1220c254d9563da60cb9d1 upstream.
sun7i-a20.dtsi contains a cpufreq operating point at 0.9 volts. The minimum
CPU voltage for the Allwinner A20 SoC, however, is 1.0 volts. Thus, raise
the voltage for the lowest operating point to 1.0 volts in order to stay
within the SoC specifications. It is an undervolted setting that isn't
stable across all SoCs and boards out there.
Fixes: d96b7161916f ("ARM: dts: sun7i: Add cpu clock reference and operating points to dtsi")
Signed-off-by: Timo Sigurdsson <public_timo.s@xxxxxxxxxxxxxx>
Acked-by: Iain Paton <ipaton0@xxxxxxxxx>
Signed-off-by: Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm/boot/dts/sun7i-a20.dtsi | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/arm/boot/dts/sun7i-a20.dtsi
+++ b/arch/arm/boot/dts/sun7i-a20.dtsi
@@ -107,7 +107,7 @@
720000 1200000
528000 1100000
312000 1000000
- 144000 900000
+ 144000 1000000
>;
#cooling-cells = <2>;
cooling-min-level = <0>;
Patches currently in stable-queue which might be from public_timo.s@xxxxxxxxxxxxxx are
queue-4.2/arm-dts-sunxi-raise-minimum-cpu-voltage-for-sun7i-a20-to-meet-soc-specifications.patch
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