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From: Mark Brown <broonie@kernel.org>
To: Stefan Roese <sr@denx.de>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>,
	Andrew Lunn <andrew@lunn.ch>, Arnd Bergmann <arnd@arndb.de>,
	linux-spi@vger.kernel.org, Nadav Haklai <nadavh@marvell.com>,
	Ezequiel Garcia <ezequiel.garcia@free-electrons.com>,
	Gregory CLEMENT <gregory.clement@free-electrons.com>,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2] spi: orion.c: Add direct access mode
Date: Thu, 24 Mar 2016 11:23:08 +0000	[thread overview]
Message-ID: <20160324112308.GY2566@sirena.org.uk> (raw)
In-Reply-To: <56F37EFF.2090605@denx.de>


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On Thu, Mar 24, 2016 at 06:45:35AM +0100, Stefan Roese wrote:

> Right. It is of course possible to use this direct mode to access
> SPI flash. Its just not the way how the SPI MTD driver uses the
> SPI controller. All information that is written to the SPI flash
> (e.g. commands, addresses) are passed as plain tx-data in the SPI
> message to the SPI controller. And it would be not easy to detect
> commands / addresses vs. "real data" in this orion SPI driver
> to put these values into the specific registers.

We now have extensions for passing commands through directly (see
spi_flash_read()).

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  reply	other threads:[~2016-03-24 11:23 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-22 16:24 [PATCH v2] spi: orion.c: Add direct access mode Stefan Roese
     [not found] ` <1458663893-13766-1-git-send-email-sr-ynQEQJNshbs@public.gmane.org>
2016-03-22 16:35   ` Thomas Petazzoni
2016-03-22 16:44     ` Stefan Roese
     [not found]       ` <56F17684.2010307-ynQEQJNshbs@public.gmane.org>
2016-03-23 11:33         ` Mark Brown
     [not found]           ` <20160323113316.GH2566-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2016-03-23 11:59             ` Stefan Roese
     [not found]               ` <56F2852C.5010006-ynQEQJNshbs@public.gmane.org>
2016-03-23 12:54                 ` Mark Brown
     [not found]                   ` <20160323125448.GM2566-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2016-03-23 13:10                     ` Stefan Roese
     [not found]                       ` <56F295E1.4030505-ynQEQJNshbs@public.gmane.org>
2016-03-23 13:26                         ` Andrew Lunn
     [not found]                           ` <20160323132637.GC19953-g2DYL2Zd6BY@public.gmane.org>
2016-03-23 13:36                             ` Mark Brown
     [not found]                               ` <20160323133612.GO2566-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2016-03-23 13:56                                 ` Andrew Lunn
     [not found]                                   ` <20160323135606.GE19953-g2DYL2Zd6BY@public.gmane.org>
2016-03-23 19:51                                     ` Arnd Bergmann
2016-03-24  7:22                                       ` Stefan Roese
     [not found]                                         ` <56F395BC.6070108-ynQEQJNshbs@public.gmane.org>
2016-03-24 12:42                                           ` Arnd Bergmann
2016-03-24 16:15                                             ` Stefan Roese
     [not found]                                               ` <56F412B5.2080200-ynQEQJNshbs@public.gmane.org>
2016-03-24 16:42                                                 ` Arnd Bergmann
2016-03-24 17:30                                                   ` Stefan Roese
2016-03-24 16:48                                                 ` Arnd Bergmann
2016-03-24 17:51                                                   ` Stefan Roese
     [not found]                                                     ` <56F42939.4020803-ynQEQJNshbs@public.gmane.org>
2016-03-24 20:07                                                       ` Arnd Bergmann
2016-03-25 10:32                                                         ` Mark Brown
     [not found]                                                           ` <20160325103253.GA2566-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2016-03-25 15:11                                                             ` Arnd Bergmann
2016-03-25 15:50                                                               ` Mark Brown
     [not found]                                                                 ` <20160325155032.GH2566-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2016-03-25 20:58                                                                   ` Arnd Bergmann
2016-03-25 22:39                                                                     ` Mark Brown
     [not found]                                                                       ` <20160325223922.GG5028-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2016-03-29 12:39                                                                         ` Arnd Bergmann
2016-03-29 16:47                                                                           ` Mark Brown
     [not found]                                                                             ` <20160329164758.GQ2350-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2016-03-29 19:49                                                                               ` Arnd Bergmann
2016-03-29 19:52                                                                                 ` Mark Brown
2016-03-29 20:04                                                                                   ` Arnd Bergmann
2016-03-29 21:00                                                                                     ` Mark Brown
     [not found]                                                                                       ` <20160329210018.GL2350-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2016-03-29 21:08                                                                                         ` Arnd Bergmann
2016-03-29 21:28                                                                                           ` Mark Brown
     [not found]                                                                                             ` <20160329212842.GN2350-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2016-03-29 22:04                                                                                               ` Arnd Bergmann
2016-04-05  7:11                                                                                                 ` Stefan Roese
     [not found]                                                                                                   ` <5703651F.4040901-ynQEQJNshbs@public.gmane.org>
2016-04-05 13:15                                                                                                     ` Andrew Lunn
     [not found]                                                                                                       ` <20160405131529.GA30881-g2DYL2Zd6BY@public.gmane.org>
2016-04-05 13:20                                                                                                         ` Stefan Roese
     [not found]                                                                                                           ` <5703BB82.4090204-ynQEQJNshbs@public.gmane.org>
2016-04-05 13:31                                                                                                             ` Andrew Lunn
2016-03-23 13:27                         ` Mark Brown
     [not found]                           ` <20160323132732.GN2566-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2016-03-23 17:25                             ` Stefan Roese
     [not found]                               ` <56F2D19A.7020604-ynQEQJNshbs@public.gmane.org>
2016-03-23 18:29                                 ` Mark Brown
2016-03-23 18:39                                 ` Andrew Lunn
     [not found]                                   ` <20160323183952.GK5250-g2DYL2Zd6BY@public.gmane.org>
2016-03-24  5:45                                     ` Stefan Roese
2016-03-24 11:23                                       ` Mark Brown [this message]
     [not found]                                         ` <20160324112308.GY2566-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2016-03-24 12:05                                           ` Stefan Roese
     [not found]     ` <20160322173546.40d24cc2-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2016-03-22 17:39       ` Mark Brown

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