Re: [PATCH 1/2] tty: pl011: Work around QDF2400 E44 stuck BUSY bit

From	Timur Tabi <timur@codeaurora.org>
Newsgroups	linux.kernel
Subject	Re: [PATCH 1/2] tty: pl011: Work around QDF2400 E44 stuck BUSY bit
Date	2017-02-08 16:30 +0100
Message-ID	<t8ClX-20B-7@gated-at.bofh.it> (permalink)
References	<t8oM1-1D5-3@gated-at.bofh.it> <t8zxM-h3-23@gated-at.bofh.it> <t8AtR-Rq-51@gated-at.bofh.it> <t8ADw-UD-15@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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Mark Rutland wrote:

>> No, only Kryo and Falkor V1 based SOCs have this problem.  Falkor V2
>> will have this fixed.  We intend to revert these fixes after Falkor
>> V1 SOCs are no longer supported.
>
> Supported by whom?

Qualcomm.

> Generally, once something's upstreamed we expect it to remain supported.

The V1 SOCs are technically pre-production, but still in wide use and it will be 
a while before they are all replaced by V2 SOCs.  It's only because of the 
"ugliness" of the erratum and its work-around that we want to git rid of it when 
we can.

Cov is better equipped to answer your other questions.

-- 
Sent by an employee of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the
Code Aurora Forum, hosted by The Linux Foundation.

Thread

[PATCH 1/2] tty: pl011: Work around QDF2400 E44 stuck BUSY bit Christopher Covington <cov@codeaurora.org> - 2017-02-08 02:00 +0100
  Re: [PATCH 1/2] tty: pl011: Work around QDF2400 E44 stuck BUSY bit Timur Tabi <timur@codeaurora.org> - 2017-02-08 05:10 +0100
    Re: [PATCH 1/2] tty: pl011: Work around QDF2400 E44 stuck BUSY bit Christopher Covington <cov@codeaurora.org> - 2017-02-08 23:30 +0100
      Re: [PATCH 1/2] tty: pl011: Work around QDF2400 E44 stuck BUSY bit Timur Tabi <timur@codeaurora.org> - 2017-02-09 00:10 +0100
  Re: [PATCH 1/2] tty: pl011: Work around QDF2400 E44 stuck BUSY bit Robin Murphy <robin.murphy@arm.com> - 2017-02-08 13:30 +0100
    Re: [PATCH 1/2] tty: pl011: Work around QDF2400 E44 stuck BUSY bit Timur Tabi <timur@codeaurora.org> - 2017-02-08 14:30 +0100
      Re: [PATCH 1/2] tty: pl011: Work around QDF2400 E44 stuck BUSY bit Mark Rutland <mark.rutland@arm.com> - 2017-02-08 14:40 +0100
        Re: [PATCH 1/2] tty: pl011: Work around QDF2400 E44 stuck BUSY bit Timur Tabi <timur@codeaurora.org> - 2017-02-08 16:30 +0100
          Re: [PATCH 1/2] tty: pl011: Work around QDF2400 E44 stuck BUSY bit Marc Zyngier <marc.zyngier@arm.com> - 2017-02-08 17:00 +0100
            Re: [PATCH 1/2] tty: pl011: Work around QDF2400 E44 stuck BUSY bit Timur Tabi <timur@codeaurora.org> - 2017-02-08 17:10 +0100
      Re: [PATCH 1/2] tty: pl011: Work around QDF2400 E44 stuck BUSY bit Christopher Covington <cov@codeaurora.org> - 2017-02-08 23:00 +0100

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