On 10/03/2025 9:37 am, 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> --- 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 {
Reviewed-by: James Clark <james.clark@xxxxxxxxxx>
