All of lore.kernel.org
 help / color / mirror / Atom feed
From: Marek Vasut <marex@denx.de>
To: Huang Shijie <b32955@freescale.com>
Cc: "fabio.estevam@freescale.com" <fabio.estevam@freescale.com>,
	Hector Palacios <hector.palacios@digi.com>,
	linux-mtd@lists.infradead.org, dzu@denx.de
Subject: Re: gpmi-nand driver and jffs2 support
Date: Tue, 24 Sep 2013 14:53:46 +0200	[thread overview]
Message-ID: <201309241453.47069.marex@denx.de> (raw)
In-Reply-To: <52416D88.6030906@freescale.com>

Hello Huang,

> 于 2013年09月24日 17:50, Marek Vasut 写道:
> > Hello Huang,
> > 
> > Can you please explain what is the exact difference between the NAND
> > layout when using JFFS2 in FSL 2.6.35 and in mainline with your patches
> > ?
> 
> In FSL 2.6.35, there are some free space in the OOB;
> while in mainline we use all the free space in the OOB.

OK, let me understand this in more detail.

How does the NAND page look when written by FSL 2.6.35 and how does the NAND 
page look when written by current mainline ? Can you please tell in detail?

> > Is there any way to mount JFFS2 written with FSL 2.6.35 on current
> > mainline? Thus far, neither me nor Hector were able to mount such
> > partition with the same result.
> 
> The gpmi driver in FSL 2.6.35 is different from the mainline.

I was under the impression the mainline driver is an evolution of the FSL 2.6.35 
driver. Is this assumption incorrect?

> The two drivers are not compatible to each other.

OK, like I said, if we cannot produce a drop-in replacement of old FSL 2.6.35 
kernel, this is a problem. People will come and they will be running into this 
issue. Thus, let us focus on producing a compatible JFFS2 patch.

I do not mind helping with that, but I need to understand the actual difference 
first. It would be nice if you could put down a detailed description of the 
problem we face.

Thank you!

Best regards,
Marek Vasut

  reply	other threads:[~2013-09-24 12:55 UTC|newest]

Thread overview: 58+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-08-30  9:15 gpmi-nand driver and jffs2 support Hector Palacios
2013-08-30  9:55 ` Huang Shijie
2013-08-30 14:24   ` Hector Palacios
2013-08-31  2:53     ` Huang Shijie
2013-08-30 15:23       ` Hector Palacios
2013-08-31  3:34         ` Huang Shijie
2013-08-30 16:31           ` Hector Palacios
2013-08-30 16:37             ` Fabio Estevam
2013-08-30 16:41               ` Hector Palacios
2013-08-31 13:37                 ` Huang Shijie
2013-09-02  8:12                   ` Hector Palacios
2013-09-02  8:24                     ` Huang Shijie
2013-09-02  8:42                       ` Hector Palacios
2013-09-02  8:50                         ` Huang Shijie
2013-09-02 10:10                           ` Hector Palacios
2013-09-02 10:10                             ` [U-Boot] " Hector Palacios
2013-09-02 10:23                             ` Huang Shijie
2013-09-02 10:23                               ` [U-Boot] " Huang Shijie
2013-09-02 11:32                               ` Marek Vasut
2013-09-02 11:32                                 ` [U-Boot] " Marek Vasut
2013-09-03  2:06                                 ` Huang Shijie
2013-09-03  2:06                                   ` [U-Boot] " Huang Shijie
2013-09-03 11:53                                   ` Marek Vasut
2013-09-03 11:53                                     ` [U-Boot] " Marek Vasut
2013-09-04  2:26                                     ` Huang Shijie
2013-09-04  2:26                                       ` [U-Boot] " Huang Shijie
2013-09-04 14:00                                       ` Marek Vasut
2013-09-04 14:00                                         ` [U-Boot] " Marek Vasut
2013-09-05  2:41                                         ` Huang Shijie
2013-09-05  2:41                                           ` [U-Boot] " Huang Shijie
2013-09-04 14:38                                           ` Marek Vasut
2013-09-04 14:38                                             ` [U-Boot] " Marek Vasut
2013-09-04 15:46                                             ` Hector Palacios
2013-09-04 15:46                                               ` [U-Boot] " Hector Palacios
2013-09-05  6:01                                               ` Huang Shijie
2013-09-05  6:01                                                 ` [U-Boot] " Huang Shijie
2013-09-15 14:18                                                 ` Marek Vasut
2013-09-15 14:18                                                   ` [U-Boot] " Marek Vasut
2013-09-16  2:35                                                   ` Huang Shijie
2013-09-16  2:35                                                     ` [U-Boot] " Huang Shijie
2013-09-19 16:07                                                     ` Marek Vasut
2013-09-19 16:07                                                       ` [U-Boot] " Marek Vasut
2013-09-19 16:13                                                       ` Hector Palacios
2013-09-19 16:13                                                         ` [U-Boot] " Hector Palacios
2013-09-19 16:14                                                       ` Hector Palacios
2013-09-19 16:14                                                         ` [U-Boot] " Hector Palacios
2013-09-19 16:16                                                         ` Marek Vasut
2013-09-19 16:16                                                           ` [U-Boot] " Marek Vasut
2013-09-19 17:20                                                         ` Marek Vasut
2013-09-19 17:20                                                           ` [U-Boot] " Marek Vasut
2013-09-15 14:12                                               ` Marek Vasut
2013-09-15 14:12                                                 ` [U-Boot] " Marek Vasut
2013-08-31 17:51                 ` Huang Shijie
2013-09-24  9:50 ` Marek Vasut
2013-09-24 10:46   ` Huang Shijie
2013-09-24 12:53     ` Marek Vasut [this message]
2013-09-25  9:08       ` Huang Shijie
2013-09-29 22:52         ` Marek Vasut

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=201309241453.47069.marex@denx.de \
    --to=marex@denx.de \
    --cc=b32955@freescale.com \
    --cc=dzu@denx.de \
    --cc=fabio.estevam@freescale.com \
    --cc=hector.palacios@digi.com \
    --cc=linux-mtd@lists.infradead.org \
    /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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.