* [PATCH] arm64: dts: Add ARM PMU node for exynos7
@ 2016-11-10 3:30 Alim Akhtar
2016-11-10 13:37 ` Robin Murphy
0 siblings, 1 reply; 3+ messages in thread
From: Alim Akhtar @ 2016-11-10 3:30 UTC (permalink / raw)
To: linux-arm-kernel, linux-samsung-soc
Cc: krzk, will.deacon, catalin.marinas, linux-kernel
This patch adds ARM Performance Monitor Unit dt node for exynos7.
PMU provides various statistics on the operation of the CPU and
memory system at runtime, which are very useful when debugging or
profiling code. This enables the same.
Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
---
arch/arm64/boot/dts/exynos/exynos7.dtsi | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/arch/arm64/boot/dts/exynos/exynos7.dtsi b/arch/arm64/boot/dts/exynos/exynos7.dtsi
index e0d0d01..53ce4be 100644
--- a/arch/arm64/boot/dts/exynos/exynos7.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynos7.dtsi
@@ -472,6 +472,14 @@
status = "disabled";
};
+ arm-pmu {
+ compatible = "arm,cortex-a57-pmu", "arm,armv8-pmuv3";
+ interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 58 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 59 IRQ_TYPE_LEVEL_HIGH>;
+ };
+
timer {
compatible = "arm,armv8-timer";
interrupts = <GIC_PPI 13
--
1.7.10.4
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] arm64: dts: Add ARM PMU node for exynos7
2016-11-10 3:30 [PATCH] arm64: dts: Add ARM PMU node for exynos7 Alim Akhtar
@ 2016-11-10 13:37 ` Robin Murphy
2016-11-11 13:01 ` Alim Akhtar
0 siblings, 1 reply; 3+ messages in thread
From: Robin Murphy @ 2016-11-10 13:37 UTC (permalink / raw)
To: Alim Akhtar, linux-arm-kernel, linux-samsung-soc
Cc: catalin.marinas, will.deacon, linux-kernel, krzk
Hi Alim,
On 10/11/16 03:30, Alim Akhtar wrote:
> This patch adds ARM Performance Monitor Unit dt node for exynos7.
> PMU provides various statistics on the operation of the CPU and
> memory system at runtime, which are very useful when debugging or
> profiling code. This enables the same.
>
> Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
> ---
> arch/arm64/boot/dts/exynos/exynos7.dtsi | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/exynos/exynos7.dtsi b/arch/arm64/boot/dts/exynos/exynos7.dtsi
> index e0d0d01..53ce4be 100644
> --- a/arch/arm64/boot/dts/exynos/exynos7.dtsi
> +++ b/arch/arm64/boot/dts/exynos/exynos7.dtsi
> @@ -472,6 +472,14 @@
> status = "disabled";
> };
>
> + arm-pmu {
> + compatible = "arm,cortex-a57-pmu", "arm,armv8-pmuv3";
> + interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 58 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 59 IRQ_TYPE_LEVEL_HIGH>;
Per Documentation/devicetree/bindings/arm/pmu.txt there should also be
an "interrupt-affinity" property describing which SPI belongs to which core.
Robin.
> + };
> +
> timer {
> compatible = "arm,armv8-timer";
> interrupts = <GIC_PPI 13
>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] arm64: dts: Add ARM PMU node for exynos7
2016-11-10 13:37 ` Robin Murphy
@ 2016-11-11 13:01 ` Alim Akhtar
0 siblings, 0 replies; 3+ messages in thread
From: Alim Akhtar @ 2016-11-11 13:01 UTC (permalink / raw)
To: Robin Murphy, linux-arm-kernel, linux-samsung-soc
Cc: catalin.marinas, will.deacon, linux-kernel, krzk
Hi Robin,
On 11/10/2016 07:07 PM, Robin Murphy wrote:
> Hi Alim,
>
> On 10/11/16 03:30, Alim Akhtar wrote:
>> This patch adds ARM Performance Monitor Unit dt node for exynos7.
>> PMU provides various statistics on the operation of the CPU and
>> memory system at runtime, which are very useful when debugging or
>> profiling code. This enables the same.
>>
>> Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
>> ---
>> arch/arm64/boot/dts/exynos/exynos7.dtsi | 8 ++++++++
>> 1 file changed, 8 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/exynos/exynos7.dtsi b/arch/arm64/boot/dts/exynos/exynos7.dtsi
>> index e0d0d01..53ce4be 100644
>> --- a/arch/arm64/boot/dts/exynos/exynos7.dtsi
>> +++ b/arch/arm64/boot/dts/exynos/exynos7.dtsi
>> @@ -472,6 +472,14 @@
>> status = "disabled";
>> };
>>
>> + arm-pmu {
>> + compatible = "arm,cortex-a57-pmu", "arm,armv8-pmuv3";
>> + interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>,
>> + <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>,
>> + <GIC_SPI 58 IRQ_TYPE_LEVEL_HIGH>,
>> + <GIC_SPI 59 IRQ_TYPE_LEVEL_HIGH>;
>
> Per Documentation/devicetree/bindings/arm/pmu.txt there should also be
> an "interrupt-affinity" property describing which SPI belongs to which core.
>
Thanks for review, will resend after adding "interrupt-affinity" property.
> Robin.
>
>> + };
>> +
>> timer {
>> compatible = "arm,armv8-timer";
>> interrupts = <GIC_PPI 13
>>
>
>
>
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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