From 3da355c03a44bc45f3688bb68b51eefa738d1857 Mon Sep 17 00:00:00 2001 From: Tushar Behera Date: Fri, 21 Mar 2014 04:26:40 +0900 Subject: ARM: dts: Disable MDMA1 node for arndale-octa board 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 get imprecise external aborts causing the kernel to oops. Unhandled fault: imprecise external abort (0x1406) at 0x00000000 Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000007 Suggested-by: Javi Merino Signed-off-by: Tushar Behera Tested-by: Javi Merino Signed-off-by: Kukjin Kim --- arch/arm/boot/dts/exynos5420-arndale-octa.dts | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/arm/boot/dts/exynos5420-arndale-octa.dts b/arch/arm/boot/dts/exynos5420-arndale-octa.dts index f509e8fc290f..810ec732f855 100644 --- a/arch/arm/boot/dts/exynos5420-arndale-octa.dts +++ b/arch/arm/boot/dts/exynos5420-arndale-octa.dts @@ -361,4 +361,16 @@ 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"; + }; + }; }; -- cgit v1.2.3-59-g8ed1b From 55ace6b285d7350d5b562ba065656c8242629a32 Mon Sep 17 00:00:00 2001 From: Tushar Behera Date: Fri, 21 Mar 2014 04:26:40 +0900 Subject: ARM: dts: Keep some essential LDOs enabled for arndale-octa board LDO3 and LDO23 need to be enabled in order for soft-reset to work. Additionally LDO9 needs to be enabled for USB operations. Signed-off-by: Tushar Behera Signed-off-by: Kukjin Kim --- arch/arm/boot/dts/exynos5420-arndale-octa.dts | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm/boot/dts/exynos5420-arndale-octa.dts b/arch/arm/boot/dts/exynos5420-arndale-octa.dts index 810ec732f855..df975b5df881 100644 --- a/arch/arm/boot/dts/exynos5420-arndale-octa.dts +++ b/arch/arm/boot/dts/exynos5420-arndale-octa.dts @@ -113,6 +113,7 @@ regulator-name = "PVDD_APIO_MMCON_1V8"; regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; + regulator-always-on; }; ldo4_reg: LDO4 { @@ -150,6 +151,7 @@ regulator-name = "PVDD_USB_3V3"; regulator-min-microvolt = <3000000>; regulator-max-microvolt = <3000000>; + regulator-always-on; }; ldo10_reg: LDO10 { @@ -218,6 +220,7 @@ regulator-name = "PVDD_MIFS_1V1"; regulator-min-microvolt = <1200000>; regulator-max-microvolt = <1200000>; + regulator-always-on; }; ldo24_reg: LDO24 { -- cgit v1.2.3-59-g8ed1b