From: Abhilash Kesavan <a.kesavan@xxxxxxxxxxx>
[ Upstream commit 25217fef355174209eff68c0eb438a8af5d7b01c ]
The arndale-octa board was giving "imprecise external aborts" during
boot-up with MCPM enabled. CCI enablement of the boot cluster was found
to be the cause of these aborts (possibly because the secure f/w was not
allowing it). Hence, disable CCI for the arndale-octa board.
Signed-off-by: Abhilash Kesavan <a.kesavan@xxxxxxxxxxx>
Tested-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>
Tested-by: Kevin Hilman <khilman@xxxxxxxxxx>
Tested-by: Tyler Baker <tyler.baker@xxxxxxxxxx>
Signed-off-by: Olof Johansson <olof@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
arch/arm/boot/dts/exynos5420-arndale-octa.dts | 4 ++++
arch/arm/boot/dts/exynos5420.dtsi | 2 +-
2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/exynos5420-arndale-octa.dts b/arch/arm/boot/dts/exynos5420-arndale-octa.dts
index aa7a7d727a7e..db2c1c4cd900 100644
--- a/arch/arm/boot/dts/exynos5420-arndale-octa.dts
+++ b/arch/arm/boot/dts/exynos5420-arndale-octa.dts
@@ -372,3 +372,7 @@
&usbdrd_dwc3_1 {
dr_mode = "host";
};
+
+&cci {
+ status = "disabled";
+};
diff --git a/arch/arm/boot/dts/exynos5420.dtsi b/arch/arm/boot/dts/exynos5420.dtsi
index 1353a092134f..9655a3efbd15 100644
--- a/arch/arm/boot/dts/exynos5420.dtsi
+++ b/arch/arm/boot/dts/exynos5420.dtsi
@@ -120,7 +120,7 @@
};
};
- cci@10d20000 {
+ cci: cci@10d20000 {
compatible = "arm,cci-400";
#address-cells = <1>;
#size-cells = <1>;
--
2.17.1
