From mboxrd@z Thu Jan 1 00:00:00 1970 From: Adam Sampson Subject: [PATCH] ARM: dts: sun7i: Add regulator configuration for pcDuino v3 Nano Date: Sat, 10 Oct 2015 21:15:21 +0100 Message-ID: <1444508121-20233-1-git-send-email-ats@offog.org> Reply-To: ats-G+91BasbrijYtjvyW6yDsg@public.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Return-path: Sender: linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org List-Post: , List-Help: , List-Archive: , List-Unsubscribe: , To: Maxime Ripard Cc: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org, Adam Sampson List-Id: devicetree@vger.kernel.org The power configuration on this board is the same as the pcDuino v3. This will enable frequency/voltage scaling over the standard A20 operating points from 144 MHz to 960 MHz. Tested using cpufreq-ljt-stress-test on two pcDuino v3 Nano boards; also tested successfully with voltages reduced by 0.025 V. Signed-off-by: Adam Sampson --- arch/arm/boot/dts/sun7i-a20-pcduino3-nano.dts | 35 ++++++++++++++++++++++++--- 1 file changed, 31 insertions(+), 4 deletions(-) diff --git a/arch/arm/boot/dts/sun7i-a20-pcduino3-nano.dts b/arch/arm/boot/dts/sun7i-a20-pcduino3-nano.dts index ee85e07..1757a6a 100644 --- a/arch/arm/boot/dts/sun7i-a20-pcduino3-nano.dts +++ b/arch/arm/boot/dts/sun7i-a20-pcduino3-nano.dts @@ -82,6 +82,10 @@ status = "okay"; }; +&cpu0 { + cpu-supply = <®_dcdc2>; +}; + &ehci0 { status = "okay"; }; @@ -108,13 +112,9 @@ status = "okay"; axp209: pmic@34 { - compatible = "x-powers,axp209"; reg = <0x34>; interrupt-parent = <&nmi_intc>; interrupts = <0 IRQ_TYPE_LEVEL_LOW>; - - interrupt-controller; - #interrupt-cells = <1>; }; }; @@ -182,6 +182,33 @@ status = "okay"; }; +#include "axp209.dtsi" + +®_dcdc2 { + regulator-always-on; + regulator-min-microvolt = <1000000>; + regulator-max-microvolt = <1400000>; + regulator-name = "vdd-cpu"; +}; + +®_dcdc3 { + regulator-always-on; + regulator-min-microvolt = <1000000>; + regulator-max-microvolt = <1400000>; + regulator-name = "vdd-int-pll"; +}; + +®_ldo1 { + regulator-name = "vdd-rtc"; +}; + +®_ldo2 { + regulator-always-on; + regulator-min-microvolt = <3000000>; + regulator-max-microvolt = <3000000>; + regulator-name = "avcc"; +}; + /* A single regulator (U24) powers both USB host ports. */ ®_usb1_vbus { pinctrl-0 = <&usb1_vbus_pin_pcduino3_nano>; -- 2.1.4