[RFC PATCH 12/36] platform: arm64: Move ec devices to an ec subdirectory

James Morse james.morse at arm.com
Wed Aug 6 11:03:13 PDT 2025


Hi Jonathan,

On 21/07/2025 17:32, Jonathan Cameron wrote:
> On Fri, 11 Jul 2025 18:36:24 +0000
> James Morse <james.morse at arm.com> wrote:
> 
>> commit 363c8aea257 "platform: Add ARM64 platform directory" added a
>> subdirectory for arm64 platform devices, but claims that all such
>> devices must be 'EC like'.
>>
>> The arm64 MPAM driver manages an MMIO interface that appears in memory
>> controllers, caches, IOMMU and connection points on the interconnect.
>> It doesn't fit into any existing subsystem.
>>
>> It would be convenient to use this subdirectory for drivers for other
>> arm64 platform devices which aren't closely coupled to the architecture
>> code and don't fit into any existing subsystem.
>>
>> Move the existing code and maintainer entries to be under
>> drivers/platform/arm64/ec. The MPAM driver will be added under
>> drivers/platform/arm64/mpam.

>> diff --git a/MAINTAINERS b/MAINTAINERS
>> index 4bac4ea21b64..bea01d413666 100644
>> --- a/MAINTAINERS
>> +++ b/MAINTAINERS
>> @@ -3549,15 +3549,15 @@ S:	Maintained
>>  F:	arch/arm64/boot/Makefile
>>  F:	scripts/make_fit.py
>>  
>> -ARM64 PLATFORM DRIVERS
>> -M:	Hans de Goede <hansg at kernel.org>
>> +ARM64 EC PLATFORM DRIVERS
>> +M:	Hans de Goede <hdegoede at redhat.com>
> 
> Smells like a rebase error as Hans' email address chagned
> to the kernel.org one in the 6.16 cycle.

Bother - yes, that's exactly what happened.


>>  M:	Ilpo Järvinen <ilpo.jarvinen at linux.intel.com>
>>  R:	Bryan O'Donoghue <bryan.odonoghue at linaro.org>
>>  L:	platform-driver-x86 at vger.kernel.org
>>  S:	Maintained
>>  Q:	https://patchwork.kernel.org/project/platform-driver-x86/list/
>>  T:	git git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git
>> -F:	drivers/platform/arm64/
>> +F:	drivers/platform/arm64/ec

> Other than that looks sensible to me but obviously needs tags from Hans or Ilpo.


Thanks,

James



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