[PATCH 0/4] Add DT support for arm_smmuv3_pmu driver

[John Garry]

On 13/07/2020 10:42, Robin Murphy wrote:
> On 2020-07-12 17:33, Ajay Kumar wrote:
>> Currently, only those platforms using ACPI can enable
>> arm_smmuv3_pmu driver. This patchset adds support for
>> enabling arm_smmuv3_pmu driver on platforms which do not
>> enable ACPI and instead rely on DT.
> 
> This must be a popular topic all of a sudden, since it's barely a week 
> since the last one!
> 
> https://lore.kernel.org/linux-arm-kernel/20200706112246.92220-1-jkchen@linux.alibaba.com/ 
> 

JFYI, I don't have that mail (so can't reply directly), but hisi 
platforms which have SMMUv3 PMCG don't support DT intentionally, and 
there is a desire to avoid headache of HW-specific DT support there in 
future.

thanks

> 
> I'm not sure whether Jay has seen my review since Alibaba's mail server 
> apparently decided to reject the direct reply as spam, but some of what 
> I said there applies here too. Could we please try to coordinate where 
> we go from here so we're not all wasting time developing and reviewing 
> multiple versions of the exact same thing?



> 
> Robin.
> 
>>
>> Ajay Kumar (4):
>>    perf/smmuv3: Remove dependency on CONFIG_ACPI
>>    Documentation: perf: Add documentation for arm-smmu-v3-pmcg
>>    perf/smmuv3: add device tree support
>>    perf/smmuv3: fix crash when platdata not specified
>>
>>   .../bindings/perf/arm-smmu-v3-pmcg.txt        | 21 +++++++++++++++++++
>>   drivers/perf/Kconfig                          |  2 +-
>>   drivers/perf/arm_smmuv3_pmu.c                 | 11 ++++++++--
>>   3 files changed, 31 insertions(+), 3 deletions(-)
>>   create mode 100644 
>> Documentation/devicetree/bindings/perf/arm-smmu-v3-pmcg.txt
>>
> 
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