Hi Leo,
On 2025/3/10 17:37, Leo Yan wrote:
> During CPU low power modes, ETM components will lose their context. Add
> the "arm,coresight-loses-context-with-cpu" property to ETM nodes to save
> and restore ETM context for CPU idle states.
>
> Signed-off-by: Leo Yan <leo.yan@xxxxxxx>
> ---
Applied to the HiSilicon arm64 dt tree.
Thanks!
Best Regards,
Wei
> arch/arm64/boot/dts/hisilicon/hi3660-coresight.dtsi | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/hisilicon/hi3660-coresight.dtsi b/arch/arm64/boot/dts/hisilicon/hi3660-coresight.dtsi
> index 79a55a0fa2f1..4c6a075908d1 100644
> --- a/arch/arm64/boot/dts/hisilicon/hi3660-coresight.dtsi
> +++ b/arch/arm64/boot/dts/hisilicon/hi3660-coresight.dtsi
> @@ -17,6 +17,7 @@ etm@ecc40000 {
> clocks = <&crg_ctrl HI3660_PCLK>;
> clock-names = "apb_pclk";
> cpu = <&cpu0>;
> + arm,coresight-loses-context-with-cpu;
>
> out-ports {
> port {
> @@ -34,6 +35,7 @@ etm@ecd40000 {
> clocks = <&crg_ctrl HI3660_PCLK>;
> clock-names = "apb_pclk";
> cpu = <&cpu1>;
> + arm,coresight-loses-context-with-cpu;
>
> out-ports {
> port {
> @@ -51,6 +53,7 @@ etm@ece40000 {
> clocks = <&crg_ctrl HI3660_PCLK>;
> clock-names = "apb_pclk";
> cpu = <&cpu2>;
> + arm,coresight-loses-context-with-cpu;
>
> out-ports {
> port {
> @@ -68,6 +71,7 @@ etm@ecf40000 {
> clocks = <&crg_ctrl HI3660_PCLK>;
> clock-names = "apb_pclk";
> cpu = <&cpu3>;
> + arm,coresight-loses-context-with-cpu;
>
> out-ports {
> port {
> @@ -160,6 +164,7 @@ etm@ed440000 {
> clocks = <&crg_ctrl HI3660_PCLK>;
> clock-names = "apb_pclk";
> cpu = <&cpu4>;
> + arm,coresight-loses-context-with-cpu;
>
> out-ports {
> port {
> @@ -177,6 +182,7 @@ etm@ed540000 {
> clocks = <&crg_ctrl HI3660_PCLK>;
> clock-names = "apb_pclk";
> cpu = <&cpu5>;
> + arm,coresight-loses-context-with-cpu;
>
> out-ports {
> port {
> @@ -194,6 +200,7 @@ etm@ed640000 {
> clocks = <&crg_ctrl HI3660_PCLK>;
> clock-names = "apb_pclk";
> cpu = <&cpu6>;
> + arm,coresight-loses-context-with-cpu;
>
> out-ports {
> port {
> @@ -211,6 +218,7 @@ etm@ed740000 {
> clocks = <&crg_ctrl HI3660_PCLK>;
> clock-names = "apb_pclk";
> cpu = <&cpu7>;
> + arm,coresight-loses-context-with-cpu;
>
> out-ports {
> port {
>
