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From: "Henrik Nordström" <henrik-N0bZODiMPoV/1Aw6q1k8hdHuzzzSOjJt@public.gmane.org>
To: linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
Cc: Boris BREZILLON
	<b.brezillon.dev-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	Maxime Ripard
	<maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>,
	Rob Landley <rob-VoJi6FS/r0vR7s880joybQ@public.gmane.org>,
	Russell King <linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org>,
	David Woodhouse <dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>,
	Grant Likely
	<grant.likely-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
	Brian Norris
	<computersforpeace-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	Jason Gunthorpe
	<jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>,
	Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>,
	"devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
	<devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	"linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
	<linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	"linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
	<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	"linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org"
	<linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>,
	linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	dev-3kdeTeqwOZ9EV1b7eY7vFQ@public.gmane.org
Subject: Re: Re: [RFC PATCH v2 09/14] mtd: nand: add sunxi NFC dt bindings doc
Date: Wed, 29 Jan 2014 23:37:59 +0100	[thread overview]
Message-ID: <1391035079.14902.3.camel@localhost> (raw)
In-Reply-To: <CAL_JsqLVr1gSLArqtfOiHce+u6ZK8FiKMX0o9bvMrMoGGhATvg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>

ons 2014-01-29 klockan 11:11 -0600 skrev Rob Herring:

> Isn't allwinner,rb implied by a lack of rb-gpios property. Or no R/B
> pin is an option? If so, don't you need some fixed time delay
> properties like max erase time?
> 
> rb-gpios could be added to the generic nand binding as well.

The Allwinner NAND controller have dedicated RB pins when NAND is
enabled, only MUXed with other functions when NAND is not enabled.

Leaving RB unconnected is not a valid hardware configuration. The
controller internal timing engine depends on being able to sense RB to
sequence NAND commands properly.

Regards
Henrik

  parent reply	other threads:[~2014-01-29 22:37 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-01-29 14:34 [RFC PATCH v2 00/14] mtd: nand: add sunxi NAND Flash Controller support Boris BREZILLON
     [not found] ` < 1391006064-28890-4-git-send-email-b.brezillon.dev@gmail.com>
     [not found] ` <1391006064-28890-1-git-send-email-b.brezillon.dev-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2014-01-29 14:34   ` [RFC PATCH v2 01/14] mtd: nand: retrieve ECC requirements from Hynix READ ID byte 4 Boris BREZILLON
2014-01-29 14:34   ` [RFC PATCH v2 02/14] of: mtd: add NAND ECC level requirements retrieval Boris BREZILLON
2014-01-29 14:34   ` [RFC PATCH v2 03/14] of: mtd: add documentation for nand-ecc-level property Boris BREZILLON
2014-01-29 17:53     ` Ezequiel Garcia
2014-01-29 18:39       ` Boris BREZILLON
2014-02-05 11:15       ` Grant Likely
     [not found]         ` <20140205111500.B19FDC40A89-WNowdnHR2B42iJbIjFUEsiwD8/FfD2ys@public.gmane.org>
2014-02-05 13:34           ` Boris BREZILLON
2014-01-29 14:34   ` [RFC PATCH v2 04/14] mtd: nand: define struct nand_timings Boris BREZILLON
2014-03-10 13:44     ` Boris BREZILLON
2014-03-11 18:55       ` Jason Gunthorpe
     [not found]         ` <20140311185554.GD31835-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2014-03-12 16:46           ` Boris BREZILLON
2014-03-12 19:07             ` Jason Gunthorpe
2014-03-12 20:18               ` Warner Losh
2014-01-29 14:34   ` [RFC PATCH v2 05/14] mtd: nand: add ONFI timing mode to nand_timings converter Boris BREZILLON
2014-01-29 14:34   ` [RFC PATCH v2 06/14] of: mtd: add NAND timing mode retrieval support Boris BREZILLON
2014-01-29 14:34   ` [RFC PATCH v2 07/14] of: mtd: add documentation for the ONFI NAND timing mode property Boris BREZILLON
2014-01-29 14:34   ` [RFC PATCH v2 08/14] mtd: nand: add sunxi NAND flash controller support Boris BREZILLON
2014-01-29 17:56     ` Jason Gunthorpe
     [not found]       ` <20140129175641.GF1427-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2014-01-29 18:46         ` Ezequiel Garcia
2014-01-29 19:10           ` Jason Gunthorpe
     [not found]             ` <20140129191005.GG1427-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2014-01-30  8:57               ` Boris BREZILLON
2014-03-10 11:17               ` Boris BREZILLON
     [not found]                 ` <531D9F4B.6040505-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2014-03-10 11:37                   ` [linux-sunxi] " Lucas Stach
2014-03-11 18:45                   ` Jason Gunthorpe
2014-01-29 19:02       ` Boris BREZILLON
2014-01-30 11:22     ` Boris BREZILLON
2014-01-29 14:34   ` [RFC PATCH v2 09/14] mtd: nand: add sunxi NFC dt bindings doc Boris BREZILLON
     [not found]     ` <1391006064-28890-10-git-send-email-b.brezillon.dev-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2014-01-29 17:11       ` Rob Herring
2014-01-29 18:01         ` Boris BREZILLON
2014-01-29 18:02         ` Gupta, Pekon
     [not found]           ` <20980858CB6D3A4BAE95CA194937D5E73EA6C01D-yXqyApvAXouIQmiDNMet8wC/G2K4zDHf@public.gmane.org>
2014-01-29 18:30             ` Boris BREZILLON
2014-01-29 18:33           ` Boris BREZILLON
2014-01-29 18:36           ` Gupta, Pekon
     [not found]         ` <CAL_JsqLVr1gSLArqtfOiHce+u6ZK8FiKMX0o9bvMrMoGGhATvg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-01-29 17:12           ` Rob Herring
2014-01-29 22:37           ` Henrik Nordström [this message]
2014-01-30  8:38             ` boris brezillon dev
2014-01-30  8:46             ` boris brezillon dev
2014-01-29 14:34   ` [RFC PATCH v2 10/14] ARM: dt/sunxi: add NFC node to Allwinner A20 SoC Boris BREZILLON
2014-01-29 14:34   ` [RFC PATCH v2 11/14] ARM: dt/sunxi: add NFC pinctrl pin definitions Boris BREZILLON
2014-01-29 14:34   ` [RFC PATCH v2 12/14] ARM: sunxi/dt: enable NAND on cubietruck board Boris BREZILLON
2014-01-29 14:34   ` [RFC PATCH v2 13/14] mtd: nand: add sunxi HW ECC support Boris BREZILLON
2014-01-29 14:34   ` [RFC PATCH v2 14/14] ARM: sunxi/dt: enable HW ECC on cubietruck board Boris BREZILLON
2014-01-30 13:39   ` [RFC PATCH pre-v3 08/14] mtd: nand: add sunxi NAND flash controller support Boris BREZILLON
2014-01-30 14:36     ` Russell King - ARM Linux
     [not found]       ` <20140130143641.GZ15937-l+eeeJia6m9vn6HldHNs0ANdhmdF6hFW@public.gmane.org>
2014-01-30 15:04         ` Boris BREZILLON
2014-01-30 13:41   ` [RFC PATCH pre-v3 13/14] mtd: nand: add sunxi HW ECC support Boris BREZILLON
2014-01-30 13:46 ` [RFC PATCH pre-v3 07/14] of: mtd: add documentation for the ONFI NAND timing mode property Boris BREZILLON

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