linux-kernel - Re: [PATCH v2 2/6] dt-bindings: dma: dw: Add max burst transaction length property

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Message-ID: <20200515105137.GK185537@smile.fi.intel.com>
Date:   Fri, 15 May 2020 13:51:37 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Vinod Koul <vkoul@...nel.org>
Cc:     Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        Serge Semin <fancer.lancer@...il.com>,
        Viresh Kumar <vireshk@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Paul Burton <paulburton@...nel.org>,
        Ralf Baechle <ralf@...ux-mips.org>,
        Arnd Bergmann <arnd@...db.de>,
        Dan Williams <dan.j.williams@...el.com>,
        linux-mips@...r.kernel.org, dmaengine@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/6] dt-bindings: dma: dw: Add max burst transaction
 length property

On Fri, May 15, 2020 at 11:39:11AM +0530, Vinod Koul wrote:
> On 12-05-20, 15:38, Andy Shevchenko wrote:
> > On Tue, May 12, 2020 at 02:49:46PM +0300, Serge Semin wrote:
> > > On Tue, May 12, 2020 at 12:08:04PM +0300, Andy Shevchenko wrote:
> > > > On Tue, May 12, 2020 at 12:35:31AM +0300, Serge Semin wrote:
> > > > > On Tue, May 12, 2020 at 12:01:38AM +0300, Andy Shevchenko wrote:
> > > > > > On Mon, May 11, 2020 at 11:05:28PM +0300, Serge Semin wrote:
> > > > > > > On Fri, May 08, 2020 at 02:12:42PM +0300, Andy Shevchenko wrote:
> > > > > > > > On Fri, May 08, 2020 at 01:53:00PM +0300, Serge Semin wrote:

...

> > I leave it to Rob and Vinod.
> > It won't break our case, so, feel free with your approach.
> 
> I agree the DT is about describing the hardware and looks like value of
> 1 is not allowed. If allowed it should be added..

It's allowed at *run time*, it's illegal in *pre-silicon stage* when
synthesizing the IP.

-- 
With Best Regards,
Andy Shevchenko