linux-kernel - [PATCH] arm64: dts: qcom: sc7180: Support ETMv4 power management

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Message-Id: <20200424111644.27970-1-saiprakash.ranjan@codeaurora.org>
Date:   Fri, 24 Apr 2020 16:46:44 +0530
From:   Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>
To:     Mathieu Poirier <mathieu.poirier@...aro.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Andy Gross <agross@...nel.org>, devicetree@...r.kernel.org,
        Stephen Boyd <swboyd@...omium.org>
Cc:     Rajendra Nayak <rnayak@...eaurora.org>,
        Matthias Kaehlcke <mka@...omium.org>,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>
Subject: [PATCH] arm64: dts: qcom: sc7180: Support ETMv4 power management

Now that deep idle states are properly supported on SC7180,
we need to add "coresight-loses-context-with-cpu" property
to avoid failure of trace session because of losing context
on entering deep idle states.

Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>
---
 arch/arm64/boot/dts/qcom/sc7180.dtsi | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi
index 4216b574c080..cab86194a870 100644
--- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
@@ -1621,6 +1621,7 @@
 
 			clocks = <&aoss_qmp>;
 			clock-names = "apb_pclk";
+			arm,coresight-loses-context-with-cpu;
 
 			out-ports {
 				port {
@@ -1639,6 +1640,7 @@
 
 			clocks = <&aoss_qmp>;
 			clock-names = "apb_pclk";
+			arm,coresight-loses-context-with-cpu;
 
 			out-ports {
 				port {
@@ -1657,6 +1659,7 @@
 
 			clocks = <&aoss_qmp>;
 			clock-names = "apb_pclk";
+			arm,coresight-loses-context-with-cpu;
 
 			out-ports {
 				port {
@@ -1675,6 +1678,7 @@
 
 			clocks = <&aoss_qmp>;
 			clock-names = "apb_pclk";
+			arm,coresight-loses-context-with-cpu;
 
 			out-ports {
 				port {
@@ -1693,6 +1697,7 @@
 
 			clocks = <&aoss_qmp>;
 			clock-names = "apb_pclk";
+			arm,coresight-loses-context-with-cpu;
 
 			out-ports {
 				port {
@@ -1711,6 +1716,7 @@
 
 			clocks = <&aoss_qmp>;
 			clock-names = "apb_pclk";
+			arm,coresight-loses-context-with-cpu;
 
 			out-ports {
 				port {
@@ -1729,6 +1735,7 @@
 
 			clocks = <&aoss_qmp>;
 			clock-names = "apb_pclk";
+			arm,coresight-loses-context-with-cpu;
 
 			out-ports {
 				port {
@@ -1747,6 +1754,7 @@
 
 			clocks = <&aoss_qmp>;
 			clock-names = "apb_pclk";
+			arm,coresight-loses-context-with-cpu;
 
 			out-ports {
 				port {
-- 
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