From: Mike Frysinger <vapier@gentoo.org>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v1 1/2] bfin: Remove spi dma function in bf5xx.
Date: Tue, 12 Mar 2013 07:19:04 -0400 [thread overview]
Message-ID: <201303120719.06528.vapier@gentoo.org> (raw)
In-Reply-To: <1362381609-23716-1-git-send-email-sonic.adi@gmail.com>
On Monday 04 March 2013 02:20:08 Sonic Zhang wrote:
> From: Scott Jiang <scott.jiang.linux@gmail.com>
>
> BF5xx rx dma causes spi flash random read error.
> Accually spi controller has problems both on tx and rx dma.
> So remove spi dma support in u-boot.
this is wrong, and imo, unnecessary. it's wrong because using DMA gains a lot
of speed increases, and works for in many cases (i haven't seen cases where it
didn't work, but i haven't been actively developing in the last year of
course). it's unnecessary because there's already a CONFIG_xxx option to
disable it if your platform is having problems and you can't figure things out,
and don't need the speed gains.
-mike
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next prev parent reply other threads:[~2013-03-12 11:19 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-04 7:20 [U-Boot] [PATCH v1 1/2] bfin: Remove spi dma function in bf5xx Sonic Zhang
2013-03-04 7:20 ` [U-Boot] [PATCH v1 2/2] bfin: discard invalid data and clear RXS in bf5xx spi driver Sonic Zhang
2013-03-12 11:19 ` Mike Frysinger [this message]
2013-03-13 3:13 ` [U-Boot] [PATCH v1 1/2] bfin: Remove spi dma function in bf5xx Scott Jiang
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