From 05f72e03b7553958609d1475c79491f90e6b50d3 Mon Sep 17 00:00:00 2001 From: Benoit Cousson Date: Tue, 3 Jun 2014 21:02:12 +0900 Subject: [PATCH] ARM: shmobile: lager: Add VDD MPU regulator for DVFS The CA15 cluster is capable of voltage scaling. Add the regulator in the i2c3 node, to allow the generic CPUFreq driver to use it. Enable the i2c3 pin mux and the device node as well since the da9210 is connected to that bus. Note: In R-CAR Gen2, each frequency is using the same voltage, and DVS control is not used. Therefore, this patch set the voltage(Vmin/Vmax) to 1000mv. Signed-off-by: Benoit Cousson [gaku.inami.xw@bp.renesas.com: Changes Vmin for disabling DVS] Signed-off-by: Gaku Inami Acked-by: Magnus Damm Signed-off-by: Simon Horman --- arch/arm/boot/dts/r8a7790-lager.dts | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/arch/arm/boot/dts/r8a7790-lager.dts b/arch/arm/boot/dts/r8a7790-lager.dts index dd2fe46073f2..6472cf0914e2 100644 --- a/arch/arm/boot/dts/r8a7790-lager.dts +++ b/arch/arm/boot/dts/r8a7790-lager.dts @@ -204,6 +204,11 @@ "msiof1_tx"; renesas,function = "msiof1"; }; + + i2c3_pins: i2c3 { + renesas,groups = "i2c3"; + renesas,function = "i2c3"; + }; }; ðer { @@ -317,3 +322,19 @@ cd-gpios = <&gpio3 22 GPIO_ACTIVE_LOW>; status = "okay"; }; + +&i2c3 { + pinctrl-names = "default"; + pinctrl-0 = <&i2c3_pins>; + status = "okay"; + + vdd_dvfs: regulator@68 { + compatible = "diasemi,da9210"; + reg = <0x68>; + + regulator-min-microvolt = <1000000>; + regulator-max-microvolt = <1000000>; + regulator-boot-on; + regulator-always-on; + }; +}; -- 2.39.5