This patch adds sunxi sata support to A20 boards that have such a connector.
Some boards also feature a regulator via a GPIO and support for this is also
added.

Signed-off-by: Olliver Schinagl <redacted>
Signed-off-by: Hans de Goede <redacted>
---
 arch/arm/boot/dts/sun7i-a20-cubieboard2.dts     |  6 ++++++
 arch/arm/boot/dts/sun7i-a20-cubietruck.dts      | 20 ++++++++++++++++++++
 arch/arm/boot/dts/sun7i-a20-olinuxino-micro.dts |  6 ++++++
 arch/arm/boot/dts/sun7i-a20.dtsi                |  8 ++++++++
 4 files changed, 40 insertions(+)

diff --git a/arch/arm/boot/dts/sun7i-a20-cubieboard2.dts b/arch/arm/boot/dts/sun7i-a20-cubieboard2.dts
index 48777cd..1cab521 100644
--- a/arch/arm/boot/dts/sun7i-a20-cubieboard2.dts
+++ b/arch/arm/boot/dts/sun7i-a20-cubieboard2.dts

@@ -13,6 +13,7 @@
 
 /dts-v1/;
 /include/ "sun7i-a20.dtsi"
+/include/ "sunxi-ahci-reg.dtsi"
 
 / {
 	model = "Cubietech Cubieboard2";

@@ -28,6 +29,11 @@
 			status = "okay";
 		};
 
+		ahci: sata at 01c18000 {
+			target-supply = <&reg_ahci_5v>;
+			status = "okay";
+		};
+
 		pinctrl at 01c20800 {
 			mmc0_cd_pin_cubieboard2: mmc0_cd_pin at 0 {
 				allwinner,pins = "PH1";

diff --git a/arch/arm/boot/dts/sun7i-a20-cubietruck.dts b/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
index 2684f27..1247ea1 100644
--- a/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
+++ b/arch/arm/boot/dts/sun7i-a20-cubietruck.dts

@@ -13,6 +13,7 @@
 
 /dts-v1/;
 /include/ "sun7i-a20.dtsi"
+/include/ "sunxi-ahci-reg.dtsi"
 
 / {
 	model = "Cubietech Cubietruck";

@@ -28,6 +29,11 @@
 			status = "okay";
 		};
 
+		ahci: sata at 01c18000 {
+			target-supply = <&reg_ahci_5v>;
+			status = "okay";
+		};
+
 		pinctrl at 01c20800 {
 			mmc0_cd_pin_cubietruck: mmc0_cd_pin at 0 {
 				allwinner,pins = "PH1";

@@ -36,6 +42,13 @@
 				allwinner,pull = <0>;
 			};
 
+			ahci_pwr_pin_cubietruck: ahci_pwr_pin at 1 {
+				allwinner,pins = "PH12";
+				allwinner,function = "gpio_out";
+				allwinner,drive = <0>;
+				allwinner,pull = <0>;
+			};
+
 			led_pins_cubietruck: led_pins at 0 {
 				allwinner,pins = "PH7", "PH11", "PH20", "PH21";
 				allwinner,function = "gpio_out";

@@ -84,4 +97,11 @@
 			gpios = <&pio 7 7 0>;
 		};
 	};
+
+	regulators {
+		reg_ahci_5v: ahci-5v {
+			pinctrl-0 = <&ahci_pwr_pin_cubietruck>;
+			gpio = <&pio 7 12 0>;
+		};
+	};
 };

diff --git a/arch/arm/boot/dts/sun7i-a20-olinuxino-micro.dts b/arch/arm/boot/dts/sun7i-a20-olinuxino-micro.dts
index bf6f6c8..f135886 100644
--- a/arch/arm/boot/dts/sun7i-a20-olinuxino-micro.dts
+++ b/arch/arm/boot/dts/sun7i-a20-olinuxino-micro.dts

@@ -13,6 +13,7 @@
 
 /dts-v1/;
 /include/ "sun7i-a20.dtsi"
+/include/ "sunxi-ahci-reg.dtsi"
 
 / {
 	model = "Olimex A20-Olinuxino Micro";

@@ -37,6 +38,11 @@
 			status = "okay";
 		};
 
+		ahci: sata at 01c18000 {
+			target-supply = <&reg_ahci_5v>;
+			status = "okay";
+		};
+
 		pinctrl at 01c20800 {
 			mmc0_cd_pin_olinuxinom: mmc0_cd_pin at 0 {
 				allwinner,pins = "PH1";

diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi
index c9c123a..0657bad 100644
--- a/arch/arm/boot/dts/sun7i-a20.dtsi
+++ b/arch/arm/boot/dts/sun7i-a20.dtsi

@@ -347,6 +347,14 @@
 			status = "disabled";
 		};
 
+		ahci: sata at 01c18000 {
+			compatible = "allwinner,sun4i-a10-ahci";
+			reg = <0x01c18000 0x1000>;
+			interrupts = <0 56 1>;