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From: Scott Wood <scottwood-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
To: Jamie Iles <jamie-wmLquQDDieKakBO8gow8eQ@public.gmane.org>
Cc: David Woodhouse <dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>,
	devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org,
	linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	Artem Bityutskiy
	<dedekind1-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Subject: Re: [PATCHv4] mtd: gpio-nand: add device tree bindings
Date: Wed, 10 Aug 2011 10:13:27 -0500	[thread overview]
Message-ID: <4E42A017.7040608@freescale.com> (raw)
In-Reply-To: <1312902747-21372-1-git-send-email-jamie-wmLquQDDieKakBO8gow8eQ@public.gmane.org>

On 08/09/2011 10:12 AM, Jamie Iles wrote:
> +Optional properties:
> +- bank-width : Width (in bytes) of the device.  If not present, the width
> +  defaults to 8 bits.

"in bytes" versus "defaults to 8 bits"...

> +- chip-delay : chip dependent delay for transferring data from array to
> +  read registers (tR).  If not present then a default of 0 is used.

nand_set_defaults() will set this to 20 us if you pass in zero.

> +- gpio-control-nand,io-sync-reg : A 64-bit physical address for a read
> +  location used to guard against bus reordering with regards to accesses to
> +  the GPIO's and the NAND flash data bus.  If present, then after changing
> +  GPIO state, this register will be read to ensure that the accesses have
> +  completed.

The driver does it before and after all cmd_ctrl byte writes, in
addition to after changing the GPIO state.

-Scott

  parent reply	other threads:[~2011-08-10 15:13 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-08-09 15:12 [PATCHv4] mtd: gpio-nand: add device tree bindings Jamie Iles
     [not found] ` <1312902747-21372-1-git-send-email-jamie-wmLquQDDieKakBO8gow8eQ@public.gmane.org>
2011-08-10 15:13   ` Scott Wood [this message]
     [not found]     ` <4E42A017.7040608-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2011-08-11  9:00       ` Jamie Iles
2011-08-15 13:57   ` Artem Bityutskiy
2011-08-15 13:58     ` Jamie Iles
2011-08-15 14:28   ` Artem Bityutskiy
2011-08-15 14:38     ` Jamie Iles
2011-08-15 14:45       ` Artem Bityutskiy
2011-08-15 15:24         ` Jamie Iles
     [not found]           ` <20110815152447.GI2636-apL1N+EY0C9YtYNIL7UdTEEOCMrvLtNR@public.gmane.org>
2011-08-19 19:51             ` Artem Bityutskiy
2011-08-19 21:18               ` Jamie Iles
2011-08-20  3:39             ` Artem Bityutskiy
2011-08-20  6:38               ` Jamie Iles
2011-08-20 12:09                 ` Artem Bityutskiy

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