ARM: Kirkwood: Convert DNSKW to use regulators

Control the power to SATA0 and SATA1 using a fixed regulator.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Jamie Lentin <jm@lentin.co.uk>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

arch/arm/boot/dts/kirkwood-dnskw.dtsi

@@ -82,4 +82,33 @@ partition@7b00000 {
 			};
 		};
 	};
+
+	regulators {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		sata0_power: regulator@1 {
+			compatible = "regulator-fixed";
+			reg = <1>;
+			regulator-name = "SATA0 Power";
+			regulator-min-microvolt = <5000000>;
+			regulator-max-microvolt = <5000000>;
+			enable-active-high;
+			regulator-always-on;
+			regulator-boot-on;
+			gpio = <&gpio1 7 0>;
+		};
+		sata1_power: regulator@2 {
+			compatible = "regulator-fixed";
+			reg = <2>;
+			regulator-name = "SATA1 Power";
+			regulator-min-microvolt = <5000000>;
+			regulator-max-microvolt = <5000000>;
+			enable-active-high;
+			regulator-always-on;
+			regulator-boot-on;
+			gpio = <&gpio1 8 0>;
+		};
+	};
 };

arch/arm/mach-kirkwood/board-dnskw.c

@@ -75,10 +75,6 @@ void __init dnskw_init(void)
 
 	kirkwood_ge00_init(&dnskw_ge00_data);
 
-	/* Ensure power is supplied to both HDDs */
-	dnskw_gpio_register(39, "dnskw:power:sata0", 1);
-	dnskw_gpio_register(40, "dnskw:power:sata1", 1);
-
 	/* Set NAS to turn back on after a power failure */
 	dnskw_gpio_register(37, "dnskw:power:recover", 1);
 }