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From: John Garry <john.garry@huawei.com>
To: Sudeep Holla <sudeep.holla@arm.com>
Cc: <rjw@rjwysocki.net>, <lenb@kernel.org>, <jeremy.linton@arm.com>,
	<arnd@arndb.de>, <olof@lixom.net>, <linux-kernel@vger.kernel.org>,
	<linux-acpi@vger.kernel.org>, <guohanjun@huawei.com>,
	<gregkh@linuxfoundation.org>,
	Jonathan Cameron <Jonathan.Cameron@huawei.com>,
	wanghuiqiang <wanghuiqiang@huawei.com>
Subject: Re: [PATCH RFC 1/2] ACPI/PPTT: Add acpi_pptt_get_package_info() API
Date: Wed, 29 Jan 2020 11:03:27 +0000	[thread overview]
Message-ID: <8c9f68ed-2cc8-ae33-2c6a-8c520511d7c4@huawei.com> (raw)
In-Reply-To: <20200128145430.GA47557@bogus>

On 28/01/2020 14:54, Sudeep Holla wrote:
>>>> https://lore.kernel.org/linux-arm-kernel/1579876505-113251-6-git-send-email-john.garry@huawei.com/
>>>>
>>> Ah, there's already quite a lot of dependency built for this feature:(
>> Not really. It's only an RFC ATM, and my requirement is a sysfs file to read
>> the SoC id(s) (under ACPI FW). So I would still expect to be able to support
>> this from the SMCCC extension method.
>>

Hi Sudeep,

> As mentioned above, yes the driver would remain almost same for SMCCC
> SOC_ID support too. The main point was: do we need to add support to
> PPTT Type 2 entry when we know there is proposal to deprecate it. I
> would at-least wait to see progress on that until I would add this to
> the kernel.

Not having support in the kernel for a feature which may be officially 
deprecated, i.e public knowledge, in future (maybe 1 year) seems harsh. 
Especially when there is no final released alternative.

So do you know if other OSes use it?

Thanks
John

  reply	other threads:[~2020-01-29 11:03 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-28 11:14 [PATCH RFC 0/2] Add basic generic ACPI soc driver John Garry
2020-01-28 11:14 ` [PATCH RFC 1/2] ACPI/PPTT: Add acpi_pptt_get_package_info() API John Garry
2020-01-28 12:34   ` Sudeep Holla
2020-01-28 14:04     ` John Garry
2020-01-28 14:54       ` Sudeep Holla
2020-01-29 11:03         ` John Garry [this message]
2020-01-30 11:23     ` Sudeep Holla
2020-01-30 16:12       ` John Garry
2020-01-30 17:41         ` Sudeep Holla
2020-01-31 10:58           ` John Garry
2020-01-28 11:14 ` [PATCH RFC 2/2] soc: Add a basic ACPI generic driver John Garry
2020-01-28 11:56   ` Greg KH
2020-01-28 13:33     ` John Garry
2020-01-28 12:50   ` Arnd Bergmann
2020-01-28 14:46     ` John Garry
2020-01-28 15:20   ` Sudeep Holla
2020-01-28 15:59     ` John Garry
2020-01-28 16:17       ` Sudeep Holla
2020-01-28 17:51   ` Olof Johansson
2020-01-28 18:22     ` John Garry
2020-01-28 19:11       ` Rafael J. Wysocki
2020-01-28 19:28         ` John Garry
2020-01-28 22:30           ` Rafael J. Wysocki
2020-01-29 10:27             ` John Garry
2020-01-28 20:06       ` Olof Johansson
2020-01-29  9:58         ` John Garry
2020-01-28 16:56 ` [PATCH RFC 0/2] Add basic generic ACPI soc driver Jeremy Linton
2020-01-28 17:28   ` John Garry
2020-01-28 19:04     ` Jeremy Linton
2020-01-28 20:07       ` John Garry

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