Hi Bjorn,
On 2020-05-15 16:21, Sai Prakash Ranjan wrote:
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).
Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@xxxxxxxxxxxxxx>
---
Depends on ETM driver change here -
https://lore.kernel.org/patchwork/cover/1242100/
---
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 8b3707347547..de4bae4ec224 100644
--- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
@@ -1657,6 +1657,7 @@
clocks = <&aoss_qmp>;
clock-names = "apb_pclk";
arm,coresight-loses-context-with-cpu;
+ qcom,skip-power-up;
out-ports {
port {
@@ -1676,6 +1677,7 @@
clocks = <&aoss_qmp>;
clock-names = "apb_pclk";
arm,coresight-loses-context-with-cpu;
+ qcom,skip-power-up;
out-ports {
port {
@@ -1695,6 +1697,7 @@
clocks = <&aoss_qmp>;
clock-names = "apb_pclk";
arm,coresight-loses-context-with-cpu;
+ qcom,skip-power-up;
out-ports {
port {
@@ -1714,6 +1717,7 @@
clocks = <&aoss_qmp>;
clock-names = "apb_pclk";
arm,coresight-loses-context-with-cpu;
+ qcom,skip-power-up;
out-ports {
port {
@@ -1733,6 +1737,7 @@
clocks = <&aoss_qmp>;
clock-names = "apb_pclk";
arm,coresight-loses-context-with-cpu;
+ qcom,skip-power-up;
out-ports {
port {
@@ -1752,6 +1757,7 @@
clocks = <&aoss_qmp>;
clock-names = "apb_pclk";
arm,coresight-loses-context-with-cpu;
+ qcom,skip-power-up;
out-ports {
port {
@@ -1771,6 +1777,7 @@
clocks = <&aoss_qmp>;
clock-names = "apb_pclk";
arm,coresight-loses-context-with-cpu;
+ qcom,skip-power-up;
out-ports {
port {
@@ -1790,6 +1797,7 @@
clocks = <&aoss_qmp>;
clock-names = "apb_pclk";
arm,coresight-loses-context-with-cpu;
+ qcom,skip-power-up;
out-ports {
port {
I have sent this patch as a part of other coresight changes
to keep all coresight DT changes together[1], we can drop this
patch now.
[1] - https://lore.kernel.org/patchwork/cover/1253969/
Thanks,
Sai
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