ARM: dts: disable CCI on exynos5420 based arndale-octa

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 <[email protected]>
Tested-by: Krzysztof Kozlowski <[email protected]>
Tested-by: Kevin Hilman <[email protected]>
Tested-by: Tyler Baker <[email protected]>
Signed-off-by: Olof Johansson <[email protected]>

diff --git a/arch/arm/boot/dts/exynos5420-arndale-octa.dts b/arch/arm/boot/dts/exynos5420-arndale-octa.dts
index aa7a7d727a7e80033df0cddb0b9cce8596d48ddc..db2c1c4cd90076b5c7bb47d12737e46bf4938264 100644 (file)
--- 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 517e50f6760b0cf4d77bc55bf899f0aa5e3667a1..0a82ae7793c224f7b1328d897bab48b8a40504f2 100644 (file)
--- 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>;