From: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
To: Sascha Hauer <s.hauer@pengutronix.de>
Cc: barebox@lists.infradead.org
Subject: Re: add i.MX51 Nand support
Date: Thu, 11 Nov 2010 06:26:41 +0100 [thread overview]
Message-ID: <20101111052641.GG20823@game.jcrosoft.org> (raw)
In-Reply-To: <1289400839-5937-1-git-send-email-s.hauer@pengutronix.de>
On 15:53 Wed 10 Nov , Sascha Hauer wrote:
> Hi all,
>
> The following series is a respin of the series adding i.MX51 Nand support
> to the kernel for barebox.
>
> The series reveals to problems in barebox. First the i.MX51 Nand controller
> needs two memory resources. Since I know that Jean-Christophe recently
> worked on adding resources to barebox I decided for a hack in the driver
> for now: I just hardcoded the second base address. Second the current
> implementation of dma_alloc_coherent stinks. The implementation simply
> maps the whole SDRAM a second time uncached. This way we can use the
> normal malloc function to allocate dma coherent memory and just add
> a known offset to the returned pointer. On i.MX51 boards with 512MB SDRAM
> we do not have enough space in the memory map to map the SDRAM twice, in
> my case the mapping shadowed the Nand register space. Be aware of this
> when you try to add Nand support to your i.MX51 board and use the babbage
> code as a template.
I'll try to push the code today for the ressource
because as for the i.MX51 I need multiple ressource for sh4 for USB as example
Best Regards,
J.
_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox
prev parent reply other threads:[~2010-11-11 5:30 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-10 14:53 Sascha Hauer
2010-11-10 14:53 ` [PATCH 01/13] NAND: reset chips before usage like the kernel does Sascha Hauer
2010-11-10 14:53 ` [PATCH 02/13] imx_nand: remove 0xe00 offset from registers Sascha Hauer
2010-11-10 14:53 ` [PATCH 03/13] imx_nand: rework get_dev_status Sascha Hauer
2010-11-10 14:53 ` [PATCH 04/13] imx nand: remove unnecessary register write Sascha Hauer
2010-11-10 14:53 ` [PATCH 05/13] imx_nand: make some internally used functions overwriteable Sascha Hauer
2010-11-10 14:53 ` [PATCH 06/13] imx nand: do not read-modify-write SPAS register Sascha Hauer
2010-11-10 14:53 ` [PATCH 07/13] imx nand: add V1_V2 namespace to registers Sascha Hauer
2010-11-10 14:53 ` [PATCH 08/13] mxc_nand: fix correct_data function Sascha Hauer
2010-11-11 5:25 ` Baruch Siach
2010-11-11 10:32 ` Sascha Hauer
2010-11-15 12:08 ` [PATCH] " Baruch Siach
2010-11-10 14:53 ` [PATCH 09/13] imx nand: move initialization to preset function Sascha Hauer
2010-11-10 14:53 ` [PATCH 10/13] imx nand: introduce overwritable check_int function Sascha Hauer
2010-11-10 14:53 ` [PATCH 11/13] imx nand: Add v3 (i.MX51) support Sascha Hauer
2010-11-10 14:53 ` [PATCH 12/13] fb: set id for framebuffer device correctly Sascha Hauer
2010-11-10 14:55 ` Sascha Hauer
2010-11-10 14:53 ` [PATCH 13/13] ARM i.MX51: Add nand device Sascha Hauer
2010-11-11 5:26 ` Jean-Christophe PLAGNIOL-VILLARD [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20101111052641.GG20823@game.jcrosoft.org \
--to=plagnioj@jcrosoft.com \
--cc=barebox@lists.infradead.org \
--cc=s.hauer@pengutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox