Merge tag 'samsung-dt-3' of...

Merge tag 'samsung-dt-3' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/cleanup3

Merge "Samsung 3rd DT updates for v3.15" from Kukjin Kim:

- Arndale Octa board updates:
  LDO3 and LDO23 enabled for soft-reset
  LDO9 enabled for USB operation
  MDMA1 disabled to avoid imprecise external abort

Note that this is based on previous tags/samsung-dt-2

* tag 'samsung-dt-3' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: dts: Keep some essential LDOs enabled for arndale-octa board
  ARM: dts: Disable MDMA1 node for arndale-octa board
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/boot/dts/exynos5420-arndale-octa.dts

@@ -113,6 +113,7 @@ ldo3_reg: LDO3 {
 					regulator-name = "PVDD_APIO_MMCON_1V8";
 					regulator-min-microvolt = <1800000>;
 					regulator-max-microvolt = <1800000>;
+					regulator-always-on;
 				};
 
 				ldo4_reg: LDO4 {
@@ -150,6 +151,7 @@ ldo9_reg: LDO9 {
 					regulator-name = "PVDD_USB_3V3";
 					regulator-min-microvolt = <3000000>;
 					regulator-max-microvolt = <3000000>;
+					regulator-always-on;
 				};
 
 				ldo10_reg: LDO10 {
@@ -218,6 +220,7 @@ ldo23_reg: LDO23 {
 					regulator-name = "PVDD_MIFS_1V1";
 					regulator-min-microvolt = <1200000>;
 					regulator-max-microvolt = <1200000>;
+					regulator-always-on;
 				};
 
 				ldo24_reg: LDO24 {
@@ -361,4 +364,16 @@ wakeup {
 			gpio-key,wakeup;
 		};
 	};
+
+	amba {
+		mdma1: mdma@11C10000 {
+			/*
+			 * MDMA1 can support both secure and non-secure
+			 * AXI transactions. When this is enabled in the kernel
+			 * for boards that run in secure mode, we are getting
+			 * imprecise external aborts causing the kernel to oops.
+			 */
+			status = "disabled";
+		};
+	};
 };