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Patch "ARM: dts: sunxi: Raise minimum CPU voltage for sun7i-a20 to meet SoC specifications" has been added to the 4.1-stable tree

PATCH [email protected] 1 participant 1 message Nov 6, 2015

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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 4.1-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-4.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

Quoted 1 line

From eaeef1ad9b6ea6df1d1220c254d9563da60cb9d1 Mon Sep 17 00:00:00 2001

From: Timo Sigurdsson <[email protected]>
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 <[email protected]>

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")

---
 arch/arm/boot/dts/sun7i-a20.dtsi |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
arch/arm/boot/dts/sun7i-a20.dtsi +1 -1
@@ -111,7 +111,7 @@
 				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 [email protected] are

queue-4.1/arm-dts-sunxi-raise-minimum-cpu-voltage-for-sun7i-a20-to-meet-soc-specifications.patch