arm64: dts: qcom: sc7180: Add support to skip powering up of ETM

Add "qcom,skip-power-up" property to skip powering up ETM
on SC7180 SoC to workaround a hardware errata where CPU
watchdog counter is stopped when ETM power up bit is set
(i.e., when TRCPDCR.PU = 1).

Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
Link: https://lore.kernel.org/r/8c5ff297d8c89d9d451352f189baf26c8938842a.1591708204.git.saiprakash.ranjan@codeaurora.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi
index 65614e66575c6c5c90f8f28bf504e2cd75457b9f..7097907a8379e85fc02e28b331ad5aec7c5d5b34 100644 (file)
--- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
@@ -2226,6 +2226,7 @@
                        clocks = <&aoss_qmp>;
                        clock-names = "apb_pclk";
                        arm,coresight-loses-context-with-cpu;
+                       qcom,skip-power-up;
 
                        out-ports {
                                port {
@@ -2245,6 +2246,7 @@
                        clocks = <&aoss_qmp>;
                        clock-names = "apb_pclk";
                        arm,coresight-loses-context-with-cpu;
+                       qcom,skip-power-up;
 
                        out-ports {
                                port {
@@ -2264,6 +2266,7 @@
                        clocks = <&aoss_qmp>;
                        clock-names = "apb_pclk";
                        arm,coresight-loses-context-with-cpu;
+                       qcom,skip-power-up;
 
                        out-ports {
                                port {
@@ -2283,6 +2286,7 @@
                        clocks = <&aoss_qmp>;
                        clock-names = "apb_pclk";
                        arm,coresight-loses-context-with-cpu;
+                       qcom,skip-power-up;
 
                        out-ports {
                                port {
@@ -2302,6 +2306,7 @@
                        clocks = <&aoss_qmp>;
                        clock-names = "apb_pclk";
                        arm,coresight-loses-context-with-cpu;
+                       qcom,skip-power-up;
 
                        out-ports {
                                port {
@@ -2321,6 +2326,7 @@
                        clocks = <&aoss_qmp>;
                        clock-names = "apb_pclk";
                        arm,coresight-loses-context-with-cpu;
+                       qcom,skip-power-up;
 
                        out-ports {
                                port {
@@ -2340,6 +2346,7 @@
                        clocks = <&aoss_qmp>;
                        clock-names = "apb_pclk";
                        arm,coresight-loses-context-with-cpu;
+                       qcom,skip-power-up;
 
                        out-ports {
                                port {
@@ -2359,6 +2366,7 @@
                        clocks = <&aoss_qmp>;
                        clock-names = "apb_pclk";
                        arm,coresight-loses-context-with-cpu;
+                       qcom,skip-power-up;
 
                        out-ports {
                                port {