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From: Andy Shevchenko <>
To: Vinod Koul <>
	Viresh Kumar <>
Subject: Re: [PATCH v2 1/1] dmaengine: dw: Program xBAR hardware for Elkhart Lake
Date: Thu, 24 Jun 2021 16:48:38 +0300	[thread overview]
Message-ID: <YNSNNmd/> (raw)
In-Reply-To: <YNRpkMMDE5B9NY9J@matsya>

On Thu, Jun 24, 2021 at 04:46:32PM +0530, Vinod Koul wrote:
> On 14-06-21, 16:30, Andy Shevchenko wrote:
> > Intel Elkhart Lake PSE DMA implementation is integrated with crossbar IP
> > in order to serve more hardware than there are DMA request lines available.
> > 
> > Due to this, program xBAR hardware to make flexible support of PSE peripheral.
> > 
> > The Device-to-Device has not been tested and it's not supported by DMA Engine,
> > but it's left in the code for the sake of documenting hardware features.
> Kernel does not like to keep dead code, please remove this. It can be
> added back when we have users

I would rather keep it as documentation (converted to comment perhaps).
In any case, it seems the suitable point of time to contribute will be
already after v5.14-rc1.

With Best Regards,
Andy Shevchenko

      reply	other threads:[~2021-06-24 13:48 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-14 13:30 [PATCH v2 1/1] dmaengine: dw: Program xBAR hardware for Elkhart Lake Andy Shevchenko
2021-06-24 11:16 ` Vinod Koul
2021-06-24 13:48   ` Andy Shevchenko [this message]

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