commit 1d41f36a68c0f4e9b01d563ce33bab5201858b54
author Gaku Inami <gaku.inami.xw@bp.renesas.com> Tue Jun 03 21:02:59 2014 +0900
committer Simon Horman <horms+renesas@verge.net.au> Tue Jun 17 19:58:21 2014 +0900
tree d6918366a13c2e06a59a0024ddd62f0903afdaea
parent b989e1386385466761f703b8a91e00468bb5ca2a

ARM: shmobile: koelsch dts: Add VDD MPU regulator for DVFS

The CA15 cluster is capable of voltage scaling. Add the regulator
in the i2c6 node, to allow the generic CPUFreq driver to use it.

Enable the i2c6 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: Gaku Inami <gaku.inami.xw@bp.renesas.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r8a7791-koelsch.dts

diff --git a/arch/arm/boot/dts/r8a7791-koelsch.dts b/arch/arm/boot/dts/r8a7791-koelsch.dts
index 05d44f9..95331d7 100644
--- a/arch/arm/boot/dts/r8a7791-koelsch.dts
+++ b/arch/arm/boot/dts/r8a7791-koelsch.dts
@@ -293,6 +293,11 @@
 				 "msiof0_tx";
 		renesas,function = "msiof0";
 	};
+
+	i2c6_pins: i2c6 {
+		renesas,groups = "i2c6";
+		renesas,function = "i2c6";
+	};
 };
 
 &ether {
@@ -408,3 +413,19 @@
 		spi-cpha;
 	};
 };
+
+&i2c6 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c6_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;
+	};
+};