Hi Sebastian,

On Sat, Oct 11, 2014 at 05:41:12PM +0200, Sebastian Hesselbarth wrote:

 
+		ahci: sata at e90000 {
+			compatible = "marvell,berlin2-ahci", "generic-ahci";
+			reg = <0xe90000 0x1000>;
+			interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&chip CLKID_SATA>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";

The ahci generic driver actually returns -ENODEV if no port is
activated. There is no need to disable it from there.

+
+			sata0: sata-port at 0 {
+				reg = <0>;
+				phys = <&sata_phy 0>;
+				status = "disabled";
+			};
+
+			sata1: sata-port at 1 {
+				reg = <1>;
+				phys = <&sata_phy 1>;
+				status = "disabled";
+			};
+		};

Antoine

-- 
Antoine T?nart, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com