From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Thu, 18 Oct 2012 17:13:11 +0800
From: Huang Shijie <b32955@freescale.com>
MIME-Version: 1.0
To: Marek Vasut <marex@denx.de>
Subject: Re: [PATCH] dma: add new DMA control commands
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Cc: alsa-devel@alsa-project.org, tiwai@suse.de,
 artem.bityutskiy@linux.intel.com, perex@perex.cz,
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 Huang Shijie <shijie8@gmail.com>, linux@arm.linux.org.uk, cjb@laptop.org,
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=E4=BA=8E 2012=E5=B9=B410=E6=9C=8818=E6=97=A5 16:49, Marek Vasut =E5=86=99=
=E9=81=93:
> Dear Huang Shijie,
>
>> =E4=BA=8E 2012=E5=B9=B410=E6=9C=8818=E6=97=A5 16:16, Marek Vasut =E5=86=
=99=E9=81=93:
>>> So we can't stream data from the chip? About time to adjust the MTD
>>> framework to allow that. Maybe implement a command queue?
>> IMHO, it's not possible. Because the READ-PAGE(00h-30h) command needs =
to
>> check the busy status
>> which means we have to stop in the middle, so we can not chain the all
>> the read-pages DMA commands.
> Can the DMA not branch?
it's too complicated to the MTD layer, as well as the gpmi driver.

Best Regards
Huang Shijie