RE: [PATCH V2 00/22] mmc: Add Command Queue support

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> -----Original Message-----
> From: Adrian Hunter [mailto:adrian.hunter@xxxxxxxxx]
> Sent: Thursday, June 15, 2017 7:38 PM
> To: Bough Chen <haibo.chen@xxxxxxx>; Linus Walleij
> <linus.walleij@xxxxxxxxxx>
> Cc: Ulf Hansson <ulf.hansson@xxxxxxxxxx>; linux-mmc <linux-
> mmc@xxxxxxxxxxxxxxx>; Alex Lemberg <alex.lemberg@xxxxxxxxxxx>; Mateusz
> Nowak <mateusz.nowak@xxxxxxxxx>; Yuliy Izrailov
> <Yuliy.Izrailov@xxxxxxxxxxx>; Jaehoon Chung <jh80.chung@xxxxxxxxxxx>;
> Dong Aisheng <dongas86@xxxxxxxxx>; Das Asutosh
> <asutoshd@xxxxxxxxxxxxxx>; Zhangfei Gao <zhangfei.gao@xxxxxxxxx>;
> Dorfman Konstantin <kdorfman@xxxxxxxxxxxxxx>; David Griego
> <david.griego@xxxxxxxxxx>; Sahitya Tummala <stummala@xxxxxxxxxxxxxx>;
> Harjani Ritesh <riteshh@xxxxxxxxxxxxxx>; Venu Byravarasu
> <vbyravarasu@xxxxxxxxxx>; Shawn Lin <shawn.lin@xxxxxxxxxxxxxx>
> Subject: Re: [PATCH V2 00/22] mmc: Add Command Queue support
> 
> On 24/04/17 12:14, Bough Chen wrote:
> >> -----Original Message-----
> >> From: linux-mmc-owner@xxxxxxxxxxxxxxx [mailto:linux-mmc-
> >> owner@xxxxxxxxxxxxxxx] On Behalf Of Linus Walleij
> >> Sent: Monday, April 24, 2017 4:13 PM
> >> To: Adrian Hunter <adrian.hunter@xxxxxxxxx>
> >> Cc: Ulf Hansson <ulf.hansson@xxxxxxxxxx>; linux-mmc <linux-
> >> mmc@xxxxxxxxxxxxxxx>; Alex Lemberg <alex.lemberg@xxxxxxxxxxx>;
> >> Mateusz Nowak <mateusz.nowak@xxxxxxxxx>; Yuliy Izrailov
> >> <Yuliy.Izrailov@xxxxxxxxxxx>; Jaehoon Chung <jh80.chung@xxxxxxxxxxx>;
> >> Dong Aisheng <dongas86@xxxxxxxxx>; Das Asutosh
> >> <asutoshd@xxxxxxxxxxxxxx>; Zhangfei Gao <zhangfei.gao@xxxxxxxxx>;
> >> Dorfman Konstantin <kdorfman@xxxxxxxxxxxxxx>; David Griego
> >> <david.griego@xxxxxxxxxx>; Sahitya Tummala <stummala@xxxxxxxxxxxxxx>;
> >> Harjani Ritesh <riteshh@xxxxxxxxxxxxxx>; Venu Byravarasu
> >> <vbyravarasu@xxxxxxxxxx>; Shawn Lin <shawn.lin@xxxxxxxxxxxxxx>
> >> Subject: Re: [PATCH V2 00/22] mmc: Add Command Queue support
> >>
> >> On Sat, Apr 22, 2017 at 9:45 AM, Adrian Hunter
> >> <adrian.hunter@xxxxxxxxx>
> >> wrote:
> >>
> >>> Ulf and Linus have been doing a great job of keeping this moving,
> >>> but it would be nice to see some others taking more interest.  The
> >>> first command queue patches were posted in February 2014, over 3 years
> ago!
> >>
> >> I agree.
> >>
> >> I think both me & Ulf would also be doing more work if we had easily
> >> accessible hardware with upstream host controller support for native
> command queueing.
> >> (Hm, was just reading in libata about NCQ ...
> >> déja vu ... https://en.wikipedia.org/wiki/Native_Command_Queuing)
> >>
> >> Do we have some hardware with host-backed command queueing out
> there
> >> that is easily obtained and has upstream support for the basic system?
> >>
> >
> > The coming i.MX8 support hardware CMDQ, I will have a try when I get one
> on May or June.
> 
> I have sent updated patches.  Will you have a chance to test hardware CMDQ?

Yes, I will try to apply these patches on our local 4.9 branch.  Will give you the test result.

Best Regards,
Haibo Chen
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