From 60b7ee6bc7fed7f2f631075f8345a41740b9e58e Mon Sep 17 00:00:00 2001 From: Seungwon Jeon Date: Fri, 9 May 2014 07:02:33 +0900 Subject: [PATCH] ARM: dts: disable MDMA1 node for exynos5420 This change places MDMA1 in disabled node for Exynos5420. If MDMA1 region is configured with secure mode, it makes the boot failure with the following on smdk5420 board. ("Unhandled fault: imprecise external abort (0x1406) at 0x00000000") Thus, arndale-octa board don't need to do the same thing anymore. Signed-off-by: Seungwon Jeon Tested-by: Javi Merino Signed-off-by: Kukjin Kim --- arch/arm/boot/dts/exynos5420.dtsi | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/arm/boot/dts/exynos5420.dtsi b/arch/arm/boot/dts/exynos5420.dtsi index 8a91a07..ba6728b 100644 --- a/arch/arm/boot/dts/exynos5420.dtsi +++ b/arch/arm/boot/dts/exynos5420.dtsi @@ -354,6 +354,13 @@ #dma-cells = <1>; #dma-channels = <8>; #dma-requests = <1>; + /* + * 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"; }; }; -- 2.7.4