Hi Marek,
with this patch (linux-next-20171201) I get on odroid-X2
[ 0.671862] hw perfevents: no interrupt-affinity property for /pmu, guessing.
[ 0.672242] hw perfevents: enabled with armv7_cortex_a9 PMU driver, 7 counters available
[ 0.672618] hw perfevents: no interrupt-affinity property for /arm_pmu, guessing.
[ 0.672696] genirq: Flags mismatch irq 38. 00010c00 (arm-pmu) vs. 00010c00 (arm-pmu)
[ 0.672716] hw perfevents: unable to request IRQ38 for ARM PMU counters
[ 0.672733] hw perfevents: /arm_pmu: failed to register PMU devices!
[ 0.672761] armv7-pmu: probe of arm_pmu failed with error -16
without it
[ 0.686817] hw perfevents: no interrupt-affinity property for /pmu, guessing.
[ 0.687194] hw perfevents: enabled with armv7_cortex_a9 PMU driver, 7 counters available
Looks like arm_pmu in exynos4412.dtsi doubles pmu from exynos4.dtsi.
Gruß,
--
Markus Reichl
Am 23.11.2017 um 15:34 schrieb Marek Szyprowski:
> Enable support for ARM Performance Monitoring Units available in
> Cortex-A9 CPU cores for Exynos4 SoCs (4210 and 4412).
>
> Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
> ---
> arch/arm/boot/dts/exynos4210.dtsi | 6 ++++++
> arch/arm/boot/dts/exynos4412.dtsi | 6 ++++++
> 2 files changed, 12 insertions(+)
>
> diff --git a/arch/arm/boot/dts/exynos4210.dtsi b/arch/arm/boot/dts/exynos4210.dtsi
> index 03dd61f64809..522f3a7ed07f 100644
> --- a/arch/arm/boot/dts/exynos4210.dtsi
> +++ b/arch/arm/boot/dts/exynos4210.dtsi
> @@ -64,6 +64,12 @@
> };
> };
>
> + arm_pmu {
> + compatible = "arm,cortex-a9-pmu";
> + interrupt-parent = <&combiner>;
> + interrupts = <2 2>, <3 2>;
> + };
> +
> sysram: sysram@2020000 {
> compatible = "mmio-sram";
> reg = <0x02020000 0x20000>;
> diff --git a/arch/arm/boot/dts/exynos4412.dtsi b/arch/arm/boot/dts/exynos4412.dtsi
> index b255ac55b1c1..468c2795481c 100644
> --- a/arch/arm/boot/dts/exynos4412.dtsi
> +++ b/arch/arm/boot/dts/exynos4412.dtsi
> @@ -150,6 +150,12 @@
> };
> };
>
> + arm_pmu {
> + compatible = "arm,cortex-a9-pmu";
> + interrupt-parent = <&combiner>;
> + interrupts = <2 2>, <3 2>, <18 2>, <19 2>;
> + };
> +
> sysram@2020000 {
> compatible = "mmio-sram";
> reg = <0x02020000 0x40000>;
>
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