[PATCH] arm64: dts: qcom: disable the new cti nodes on devices with broken coresight

* [PATCH] arm64: dts: qcom: disable the new cti nodes on devices with broken coresight
@ 2020-05-13 15:47 michael.srba
  2020-05-13 16:04 ` Jeffrey Hugo
  0 siblings, 1 reply; 3+ messages in thread
From: michael.srba @ 2020-05-13 15:47 UTC (permalink / raw)
  To: Andy Gross, Bjorn Andersson
  Cc: Rob Herring, Mathieu Poirier, Suzuki K Poulose, Mike Leach,
	linux-arm-msm, devicetree, linux-kernel,
	~postmarketos/upstreaming, Michael Srba

From: Michael Srba <michael.srba@seznam.cz>

Attempting to enable these devices causes a "synchronous
external abort". Suspected cause is that the debug power
domain is not enabled by default on this device.
Disable these devices for now to avoid the crash.

See: https://lore.kernel.org/linux-arm-msm/20190618202623.GA53651@gerhold.net/

Fixes: b1fcc5702a41 ("arm64: dts: qcom: msm8916: Add CTI options")
Signed-off-by: Michael Srba <michael.srba@seznam.cz>

---
 arch/arm64/boot/dts/qcom/msm8916-longcheer-l8150.dts       | 6 ++++++
 arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi | 6 ++++++
 2 files changed, 12 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8916-longcheer-l8150.dts b/arch/arm64/boot/dts/qcom/msm8916-longcheer-l8150.dts
index d1ccb9472c8b..28983b871a70 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-longcheer-l8150.dts
+++ b/arch/arm64/boot/dts/qcom/msm8916-longcheer-l8150.dts
@@ -105,6 +105,12 @@ wcnss@a21b000 {
 		etm@85d000 { status = "disabled"; };
 		etm@85e000 { status = "disabled"; };
 		etm@85f000 { status = "disabled"; };
+		cti@810000 { status = "disabled"; };
+		cti@811000 { status = "disabled"; };
+		cti@858000 { status = "disabled"; };
+		cti@859000 { status = "disabled"; };
+		cti@85a000 { status = "disabled"; };
+		cti@85b000 { status = "disabled"; };
 	};
 
 	// FIXME: Use extcon device provided by charger driver when available
diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi b/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
index 43c5e0f882f1..8569a1532a3f 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
@@ -98,6 +98,12 @@ wcnss@a21b000 {
 		etm@85d000 { status = "disabled"; };
 		etm@85e000 { status = "disabled"; };
 		etm@85f000 { status = "disabled"; };
+		cti@810000 { status = "disabled"; };
+		cti@811000 { status = "disabled"; };
+		cti@858000 { status = "disabled"; };
+		cti@859000 { status = "disabled"; };
+		cti@85a000 { status = "disabled"; };
+		cti@85b000 { status = "disabled"; };
 	};
 
 	gpio-keys {
-- 
2.24.0


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