From: Geert Uytterhoeven <geert@linux-m68k.org>
To: David Woodhouse <dwmw2@infradead.org>,
Brian Norris <computersforpeace@gmail.com>
Cc: Marek Vasut <marex@denx.de>, Sourav Poddar <sourav.poddar@ti.com>,
linux-mtd@lists.infradead.org, linux-spi@vger.kernel.org
Subject: [PATCH 0/4] m25p80 Quad/Dual updates
Date: Tue, 21 Jan 2014 13:59:15 +0100 [thread overview]
Message-ID: <1390309159-19643-1-git-send-email-geert@linux-m68k.org> (raw)
Hi,
This patch series allows to really use Quad and Dual SPI Read Tranfers
with the m25p80 driver:
[1/4] mtd: m25p80: Enable Quad SPI read transfers for s25fl512s
[2/4] mtd: m25p80: Set rx_nbits for Quad SPI transfers
[3/4] mtd: m25p80: Add dual read support
[4/4] mtd: m25p80: Enable Dual SPI read transfers for s25fl256s1 and
s25fl512s
Patch [2/4] is a bug fix.
Patches [3/4] and [4/4] may be considered of limited use (why use Dual
transfers if you have Quad transfers?), but
1. not all Quad-capable devices may be connected using 6 wires,
2. it allows to test Dual SPI transfers in SPI master drivers.
This was tested with a preliminary version of the Renesas QSPI driver and a
Spansion s25fl512s SPI FLASH.
Thanks for your comments!
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
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next reply other threads:[~2014-01-21 12:59 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-21 12:59 Geert Uytterhoeven [this message]
2014-01-21 12:59 ` [PATCH 1/4] mtd: m25p80: Enable Quad SPI read transfers for s25fl512s Geert Uytterhoeven
[not found] ` <1390309159-19643-2-git-send-email-geert-Td1EMuHUCqxL1ZNQvxDV9g@public.gmane.org>
2014-01-21 15:13 ` Marek Vasut
2014-01-21 12:59 ` [PATCH 2/4] mtd: m25p80: Set rx_nbits for Quad SPI transfers Geert Uytterhoeven
[not found] ` <1390309159-19643-3-git-send-email-geert-Td1EMuHUCqxL1ZNQvxDV9g@public.gmane.org>
2014-01-21 15:18 ` Marek Vasut
2014-01-21 12:59 ` [PATCH 3/4] mtd: m25p80: Add dual read support Geert Uytterhoeven
[not found] ` <1390309159-19643-4-git-send-email-geert-Td1EMuHUCqxL1ZNQvxDV9g@public.gmane.org>
2014-01-21 15:42 ` Marek Vasut
2014-01-21 12:59 ` [PATCH 4/4] mtd: m25p80: Enable Dual SPI read transfers for s25fl256s1 and s25fl512s Geert Uytterhoeven
[not found] ` <1390309159-19643-5-git-send-email-geert-Td1EMuHUCqxL1ZNQvxDV9g@public.gmane.org>
2014-01-21 15:42 ` Marek Vasut
[not found] ` <201401211642.55461.marex-ynQEQJNshbs@public.gmane.org>
2014-01-21 15:58 ` Geert Uytterhoeven
[not found] ` <CAMuHMdVMDO9nKQPgNwz47H2mK6kKreNYiyn-AFOB2KryRpSgoA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-01-21 16:10 ` Marek Vasut
[not found] ` <1390309159-19643-1-git-send-email-geert-Td1EMuHUCqxL1ZNQvxDV9g@public.gmane.org>
2014-01-23 2:01 ` [PATCH 0/4] m25p80 Quad/Dual updates Huang Shijie
[not found] ` <20140123020153.GA6229-Fb7DQEYuewWctlrPMvKcciBecyulp+rMXqFh9Ls21Oc@public.gmane.org>
2014-01-25 9:06 ` Brian Norris
2014-01-28 5:26 ` Brian Norris
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