[PATCH v6 17/18] ARM: sun4i: dt: Add ahci / sata support

[hdegoede@redhat.com (Hans de Goede)]

From: Oliver Schinagl <oliver@schinagl.nl>

This patch adds sunxi sata support to A10 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 <oliver@schinagl.nl>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 arch/arm/boot/dts/sun4i-a10-a1000.dts      |  4 ++++
 arch/arm/boot/dts/sun4i-a10-cubieboard.dts |  6 +++++
 arch/arm/boot/dts/sun4i-a10.dtsi           |  8 +++++++
 arch/arm/boot/dts/sunxi-ahci-reg.dtsi      | 36 ++++++++++++++++++++++++++++++
 4 files changed, 54 insertions(+)
 create mode 100644 arch/arm/boot/dts/sunxi-ahci-reg.dtsi

diff --git a/arch/arm/boot/dts/sun4i-a10-a1000.dts b/arch/arm/boot/dts/sun4i-a10-a1000.dts
index cbd2e13..d6ec839 100644
--- a/arch/arm/boot/dts/sun4i-a10-a1000.dts
+++ b/arch/arm/boot/dts/sun4i-a10-a1000.dts
@@ -35,6 +35,10 @@
 			};
 		};
 
+		ahci: sata at 01c18000 {
+			status = "okay";
+		};
+
 		pinctrl at 01c20800 {
 			emac_power_pin_a1000: emac_power_pin at 0 {
 				allwinner,pins = "PH15";
diff --git a/arch/arm/boot/dts/sun4i-a10-cubieboard.dts b/arch/arm/boot/dts/sun4i-a10-cubieboard.dts
index b139ee6..6df237d8 100644
--- a/arch/arm/boot/dts/sun4i-a10-cubieboard.dts
+++ b/arch/arm/boot/dts/sun4i-a10-cubieboard.dts
@@ -12,6 +12,7 @@
 
 /dts-v1/;
 /include/ "sun4i-a10.dtsi"
+/include/ "sunxi-ahci-reg.dtsi"
 
 / {
 	model = "Cubietech Cubieboard";
@@ -33,6 +34,11 @@
 			};
 		};
 
+		ahci: sata at 01c18000 {
+			target-supply = <&reg_ahci_5v>;
+			status = "okay";
+		};
+
 		pinctrl at 01c20800 {
 			led_pins_cubieboard: led_pins at 0 {
 				allwinner,pins = "PH20", "PH21";
diff --git a/arch/arm/boot/dts/sun4i-a10.dtsi b/arch/arm/boot/dts/sun4i-a10.dtsi
index 336dbec..454077a 100644
--- a/arch/arm/boot/dts/sun4i-a10.dtsi
+++ b/arch/arm/boot/dts/sun4i-a10.dtsi
@@ -338,6 +338,14 @@
 			#size-cells = <0>;
 		};
 
+		ahci: sata at 01c18000 {
+			compatible = "allwinner,sun4i-a10-ahci";
+			reg = <0x01c18000 0x1000>;
+			interrupts = <56>;
+			clocks = <&pll6 0>, <&ahb_gates 25>;
+			status = "disabled";
+		};
+
 		intc: interrupt-controller at 01c20400 {
 			compatible = "allwinner,sun4i-ic";
 			reg = <0x01c20400 0x400>;
diff --git a/arch/arm/boot/dts/sunxi-ahci-reg.dtsi b/arch/arm/boot/dts/sunxi-ahci-reg.dtsi
new file mode 100644
index 0000000..7072af1
--- /dev/null
+++ b/arch/arm/boot/dts/sunxi-ahci-reg.dtsi
@@ -0,0 +1,36 @@
+/*
+ * sunxi boards sata target power supply common code
+ *
+ * Copyright 2014 - Hans de Goede <hdegoede@redhat.com>
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+/ {
+	soc at 01c00000 {
+		pio: pinctrl at 01c20800 {
+			ahci_pwr_pin_a: ahci_pwr_pin at 0 {
+				allwinner,pins = "PB8";
+				allwinner,function = "gpio_out";
+				allwinner,drive = <0>;
+				allwinner,pull = <0>;
+			};
+		};
+	};
+
+	reg_ahci_5v: ahci-5v {
+		compatible = "regulator-fixed";
+		pinctrl-names = "default";
+		pinctrl-0 = <&ahci_pwr_pin_a>;
+		regulator-name = "ahci-5v";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		enable-active-high;
+		gpio = <&pio 1 8 0>;
+	};
+};
-- 
1.8.5.3