linux-kernel - Re: [PATCH] mtd: nand: raw: atmel: add module param to avoid using dma

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Message-ID: <20180403093229.66dd1dcf@bbrezillon>
Date:   Tue, 3 Apr 2018 09:32:29 +0200
From:   Boris Brezillon <boris.brezillon@...tlin.com>
To:     Peter Rosin <peda@...ntia.se>
Cc:     Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Josh Wu <rainyfeeling@...look.com>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        linux-kernel@...r.kernel.org, Marek Vasut <marek.vasut@...il.com>,
        linux-mtd@...ts.infradead.org,
        Cyrille Pitchen <cyrille.pitchen@...ev4u.fr>,
        Brian Norris <computersforpeace@...il.com>,
        David Woodhouse <dwmw2@...radead.org>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] mtd: nand: raw: atmel: add module param to avoid using
 dma

On Tue, 3 Apr 2018 09:15:22 +0200
Boris Brezillon <boris.brezillon@...tlin.com> wrote:
> 
> > 
> > to
> > 
> >  0 33--3--3--3333--
> >  1 33--3--3--3333--
> >  2 33--------------
> >  3 -3--------333---
> >  4 33--------------
> >  5 3---------------
> >  6 33--33-33333333-
> >  7 --1-1--3--------
> >  8 -1---1--3--3----  
> 
> Why do you change priority on slave 7 and 8 (AKA DDR port 0 and 1)?
> They don't seem to be used by the LCDC.
> 
> >  9 --1-1--3-33-333-  
> 
> Shouldn't we have
> 
>    9 -1---1--3--1----
> 
> here?

Never mind. I just read the email where you explain the datasheet vs
reality mismatch after this one.

I guess we'll have to wait for a Nicolas' feedback here.

-- 
Boris Brezillon, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com