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From: Abhilash Kesavan <a.kesavan@samsung.com>
To: kgene.kim@samsung.com, linux-arm-kernel@lists.infradead.org,
	arm@kernel.org, arnd@arndb.de, khilman@kernel.org,
	olof@lixom.net
Cc: linux-samsung-soc@vger.kernel.org, kesavan.abhilash@gmail.com,
	sudeep.holla@arm.com, nicolas.pitre@linaro.org,
	Punit.Agrawal@arm.com, Will.Deacon@arm.com, Mark.Rutland@arm.com,
	k.kozlowski@samsung.com
Subject: [PATCH 2/2] arm: dts: disable CCI on exynos420 based arndale-octa
Date: Sat, 10 Jan 2015 08:41:36 +0530	[thread overview]
Message-ID: <1420859496-27533-2-git-send-email-a.kesavan@samsung.com> (raw)
In-Reply-To: <1420859496-27533-1-git-send-email-a.kesavan@samsung.com>

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@samsung.com>
Tested-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Tested-by: Kevin Hilman <khilman@linaro.org>
Tested-by: Tyler Baker <tyler.baker@linaro.org>
---
 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 aa7a7d7..db2c1c4 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 517e50f..0a82ae7 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>;
-- 
2.2.0

WARNING: multiple messages have this Message-ID (diff)
From: a.kesavan@samsung.com (Abhilash Kesavan)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/2] arm: dts: disable CCI on exynos420 based arndale-octa
Date: Sat, 10 Jan 2015 08:41:36 +0530	[thread overview]
Message-ID: <1420859496-27533-2-git-send-email-a.kesavan@samsung.com> (raw)
In-Reply-To: <1420859496-27533-1-git-send-email-a.kesavan@samsung.com>

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@samsung.com>
Tested-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Tested-by: Kevin Hilman <khilman@linaro.org>
Tested-by: Tyler Baker <tyler.baker@linaro.org>
---
 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 aa7a7d7..db2c1c4 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 517e50f..0a82ae7 100644
--- a/arch/arm/boot/dts/exynos5420.dtsi
+++ b/arch/arm/boot/dts/exynos5420.dtsi
@@ -120,7 +120,7 @@
 		};
 	};
 
-	cci at 10d20000 {
+	cci: cci at 10d20000 {
 		compatible = "arm,cci-400";
 		#address-cells = <1>;
 		#size-cells = <1>;
-- 
2.2.0

  reply	other threads:[~2015-01-10  3:19 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-10  3:11 [PATCH 1/2] drivers: bus: check cci device tree node status Abhilash Kesavan
2015-01-10  3:11 ` Abhilash Kesavan
2015-01-10  3:11 ` Abhilash Kesavan [this message]
2015-01-10  3:11   ` [PATCH 2/2] arm: dts: disable CCI on exynos420 based arndale-octa Abhilash Kesavan
2015-01-13  2:05   ` Olof Johansson
2015-01-13  2:05     ` Olof Johansson

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