lkml.org 
[lkml]   [2020]   [Jun]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 2/2] arm64: dts: qcom: sc7180: Add support to skip powering up of ETM
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@codeaurora.org>
> ---
>
> 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

--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a
member
of Code Aurora Forum, hosted by The Linux Foundation

\
 
 \ /
  Last update: 2020-06-09 15:55    [W:0.076 / U:2.696 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site