Re: [PATCH 1/2] arm/arm64: ACPI: Introduce CONFIG_ACPI_MUST_HAVE_CCA

Hanjun Guo
2015-04-30T14:15:24Z

On 2015年04月30日 21:50, Will Deacon wrote:
> On Thu, Apr 30, 2015 at 02:47:13PM +0100, Hanjun Guo wrote:
>> On 2015年04月29日 22:42, Catalin Marinas wrote:
>>> On Wed, Apr 29, 2015 at 09:31:03AM -0500, Suravee Suthikulpanit wrote:
>>>> On 04/29/2015 09:04 AM, Catalin Marinas wrote:
>>>>> On Wed, Apr 29, 2015 at 08:44:08AM -0500, Suravee Suthikulpanit wrote:
>>>>> Any plans for ACPI on 32-bit ARM?
>>>>
>>>> Not that I am aware, but I could be totally wrong. The reason I am adding
>>>> this here for 32-bit ARM is because the ACPI spec mentioned this.
>>>>
>>>> If you think this is not necessary until we introduce ACPI for ARM32, it can
>>>> be removed.
>>>
>>> I think it should be removed (as long as ACPI cannot be selected on
>>> arm32).
>>
>> I agree.
>>
>> Now there is no plan for ARM32 ACPI as I know, ACPI for ARM targets
>> for ARM64 based enterprise system at now.
>
> While we're at it, do we *really* need to support CONFIG_ACPI_PROCFS_POWER
> on arm64? It's a deprecated /proc/acpi interface and it would be nice to
> avoid introducing deprecated behaviour if we can avoid it.

I agree. It is used for laptop ac adapter and battery, I will look
into that and clean it up for ARM64.

Thanks
Hanjun