From mboxrd@z Thu Jan 1 00:00:00 1970 From: Robert Nelson Subject: [PATCH] ARM: dts: am335x-boneblack: set dcdc1 regulator for 1.35v ddr3 Date: Fri, 10 Oct 2014 15:33:39 -0500 Message-ID: <1412973219-3674-1-git-send-email-robertcnelson@gmail.com> Return-path: Sender: linux-omap-owner@vger.kernel.org To: tony@atomide.com, devicetree@vger.kernel.org Cc: linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Robert Nelson , Vagrant Cascadian List-Id: devicetree@vger.kernel.org The TPS65217C used on the boneblack defaults to 1.5v on startup for dcdc1_reg. While 1.35v ddr3 memory is actually used. This was discovered by a user during a schematic review of his beaglebone-black clone, a u-boot patch will also also be submitted. Signed-off-by: Robert Nelson CC: Tony Lindgren CC: Vagrant Cascadian --- arch/arm/boot/dts/am335x-boneblack.dts | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/arm/boot/dts/am335x-boneblack.dts b/arch/arm/boot/dts/am335x-boneblack.dts index 901739f..e7c8999 100644 --- a/arch/arm/boot/dts/am335x-boneblack.dts +++ b/arch/arm/boot/dts/am335x-boneblack.dts @@ -15,6 +15,13 @@ compatible = "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx"; }; +&dcdc1_reg { + /* TPS65217C defaults to 1.5v on powerup while 1.35v DDR3 is used */ + regulator-min-microvolt = <1350000>; + regulator-max-microvolt = <1350000>; + regulator-boot-on; +}; + &ldo3_reg { regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; -- 2.1.1