From: Seungwon Jeon <tgih.jun@xxxxxxxxxxx>
This patch does NOT apply to the 3.12 stable tree. If you still want
it applied, please provide a backport.
===============
commit e6015c1f8a9032c2aecb78d23edf49582563bd47 upstream.
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 <tgih.jun@xxxxxxxxxxx>
Tested-by: Javi Merino <javi.merino@xxxxxxx>
Signed-off-by: Kukjin Kim <kgene.kim@xxxxxxxxxxx>
---
arch/arm/boot/dts/exynos5420-arndale-octa.dts | 12 ------------
arch/arm/boot/dts/exynos5420.dtsi | 7 +++++++
2 files changed, 7 insertions(+), 12 deletions(-)
diff --git a/arch/arm/boot/dts/exynos5420-arndale-octa.dts b/arch/arm/boot/dts/exynos5420-arndale-octa.dts
index 80a3bf4c5986..896a2a6619e0 100644
--- a/arch/arm/boot/dts/exynos5420-arndale-octa.dts
+++ b/arch/arm/boot/dts/exynos5420-arndale-octa.dts
@@ -364,16 +364,4 @@
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";
- };
- };
};
diff --git a/arch/arm/boot/dts/exynos5420.dtsi b/arch/arm/boot/dts/exynos5420.dtsi
index c3a9a66c5767..97cbcdd901be 100644
--- a/arch/arm/boot/dts/exynos5420.dtsi
+++ b/arch/arm/boot/dts/exynos5420.dtsi
@@ -336,6 +336,13 @@
#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";
};
};
--
2.0.0
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