From mboxrd@z Thu Jan 1 00:00:00 1970 From: ipaton0@gmail.com (Iain Paton) Date: Wed, 07 Jan 2015 22:21:45 +0000 Subject: ARM: dts: sunxi: A20-OlinuXino-Lime2 raise dcdc2 lower voltage limit Message-ID: <54ADB179.9000209@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org The Lime2 is not stable if the cpu core voltage is reduced below 1v. To prevent any problems when operating points are enabled, raise the pmic dcdc2 lower voltage limit to 1v. Signed-off-by: Iain Paton --- Maxime, I realise the axp209 nodes will probably end up abstracted somewhat differently once all of the patches Chen-Yu posted are reviewed and picked up and I can redo the lime2 dts to fit once that's done. For now, the lime2 dts defines the full axp209 node itself including all of the regulators, so if the lowest opp with the 0.9v setting is enabled this will cause problems. Up to you if you want to take this patch now or we wait until the axp209.dtsi lands and refactor the lime2 dts appropriately then. arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts b/arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts index ed364d5..910318a 100644 --- a/arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts +++ b/arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts @@ -159,7 +159,7 @@ }; vdd_cpu: dcdc2 { - regulator-min-microvolt = <700000>; + regulator-min-microvolt = <1000000>; regulator-max-microvolt = <2275000>; regulator-always-on; }; -- 2.1.3