From: Scott Wood <scottwood@freescale.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] nand onfi 8bit/16bit bus support
Date: Thu, 9 May 2013 16:37:32 -0500 [thread overview]
Message-ID: <1368135452.654.12@snotra> (raw)
In-Reply-To: <5187E020.5090103@monstr.eu> (from monstr@monstr.eu on Mon May 6 11:53:52 2013)
On 05/06/2013 11:53:52 AM, Michal Simek wrote:
> Hi guys,
>
> Zynq supports 8 and 16bit ONFI nand flashes.
> We can count number of connected pins and from that
> we know if 8bit or 16bit nand flash is used.
>
> I have looked at the code and contains ONFI detection
> with correct detection of bus width + checking later.
> Why also not setup proper chip->options for NAND_BUSWIDTH_16?
>
> Not sure how others but if driver expect just ONFI devices
> and support 8 and 16bit options why not just to setup
> chip options based on information from ONFI or
> not check that (busw != (chip->options & NAND_BUSWIDTH_16))
> for onfi case.
This is fixed in current Linux, with NAND_BUSWIDTH_AUTO. There was a
patchset to merge in recent Linux MTD code a while back, but an
expected respin didn't come. I'll try to fix it up when I process this
merge window's patches.
-Scott
next prev parent reply other threads:[~2013-05-09 21:37 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-06 16:53 [U-Boot] nand onfi 8bit/16bit bus support Michal Simek
2013-05-09 21:37 ` Scott Wood [this message]
2013-05-10 5:57 ` Michal Simek
2013-06-19 13:40 ` Michal Simek
2013-06-19 17:17 ` Scott Wood
2013-06-20 5:32 ` Michal Simek
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