On 12.03.21 11:26, Alice Guo (OSS) wrote:
> From: Alice Guo <alice....@nxp.com>
>
> Adding pmu node supports to use perf tool to monitor the CPU performance
> of the inmate cell when enabling Jailhouse and running dual Linux OS.
>
Is the PMU truly per core, i.e. exposing no information about other
cores or central resources and also not permitting any influence on
other cores?
Jan
> Signed-off-by: Alice Guo <alice....@nxp.com>
> ---
> configs/arm64/dts/inmate-imx8mm-evk.dts | 7 +++++++
> configs/arm64/dts/inmate-imx8mn-ddr4-evk.dts | 8 ++++++++
> configs/arm64/dts/inmate-imx8mp-evk.dts | 8 ++++++++
> configs/arm64/dts/inmate-imx8mq-evk.dts | 7 +++++++
> 4 files changed, 30 insertions(+)
>
> diff --git a/configs/arm64/dts/inmate-imx8mm-evk.dts
> b/configs/arm64/dts/inmate-imx8mm-evk.dts
> index f7c21b10..591c3543 100644
> --- a/configs/arm64/dts/inmate-imx8mm-evk.dts
> +++ b/configs/arm64/dts/inmate-imx8mm-evk.dts
> @@ -48,6 +48,13 @@
> };
> };
>
> + pmu {
> + compatible = "arm,armv8-pmuv3";
> + interrupts = <GIC_PPI 7
> + (GIC_CPU_MASK_SIMPLE(6) | IRQ_TYPE_LEVEL_HIGH)>;
> + interrupt-affinity = <&A53_2>, <&A53_3>;
> + };
> +
> gic: interrupt-controller@38800000 {
> compatible = "arm,gic-v3";
> reg = <0x0 0x38800000 0 0x10000>, /* GIC Dist */
> diff --git a/configs/arm64/dts/inmate-imx8mn-ddr4-evk.dts
> b/configs/arm64/dts/inmate-imx8mn-ddr4-evk.dts
> index 74fe9d7c..e5a87d03 100644
> --- a/configs/arm64/dts/inmate-imx8mn-ddr4-evk.dts
> +++ b/configs/arm64/dts/inmate-imx8mn-ddr4-evk.dts
> @@ -48,6 +48,14 @@
> };
> };
>
> + pmu {
> + compatible = "arm,armv8-pmuv3";
> + interrupt-parent = <&gic>;
> + interrupts = <GIC_PPI 7
> + (GIC_CPU_MASK_SIMPLE(6) | IRQ_TYPE_LEVEL_HIGH)>;
> + interrupt-affinity = <&A53_2>, <&A53_3>;
> + };
> +
> osc_24m: clock-osc-24m {
> compatible = "fixed-clock";
> #clock-cells = <0>;
> diff --git a/configs/arm64/dts/inmate-imx8mp-evk.dts
> b/configs/arm64/dts/inmate-imx8mp-evk.dts
> index 2fb4bc74..b4068771 100644
> --- a/configs/arm64/dts/inmate-imx8mp-evk.dts
> +++ b/configs/arm64/dts/inmate-imx8mp-evk.dts
> @@ -48,6 +48,14 @@
> };
> };
>
> + pmu {
> + compatible = "arm,armv8-pmuv3";
> + interrupt-parent = <&gic>;
> + interrupts = <GIC_PPI 7
> + (GIC_CPU_MASK_SIMPLE(6) | IRQ_TYPE_LEVEL_HIGH)>;
> + interrupt-affinity = <&A53_2>, <&A53_3>;
> + };
> +
> gic: interrupt-controller@38800000 {
> compatible = "arm,gic-v3";
> reg = <0x0 0x38800000 0 0x10000>, /* GIC Dist */
> diff --git a/configs/arm64/dts/inmate-imx8mq-evk.dts
> b/configs/arm64/dts/inmate-imx8mq-evk.dts
> index 8d620522..45b42c94 100644
> --- a/configs/arm64/dts/inmate-imx8mq-evk.dts
> +++ b/configs/arm64/dts/inmate-imx8mq-evk.dts
> @@ -48,6 +48,13 @@
> };
> };
>
> + pmu {
> + compatible = "arm,cortex-a53-pmu";
> + interrupts = <GIC_PPI 7 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-parent = <&gic>;
> + interrupt-affinity = <&A53_2>, <&A53_3>;
> + };
> +
> osc_25m: clock-osc-25m {
> compatible = "fixed-clock";
> #clock-cells = <0>;
>
--
Siemens AG, T RDA IOT
Corporate Competence Center Embedded Linux
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