From: Aaron Brice <aaron.brice-vSOi0k5x9wFWk0Htik3J/w@public.gmane.org>
To: broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org
Cc: linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
stefan-XLVq0VzYD2Y@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [PATCH v3 0/3] spi: fsl-dspi (vf610) clock fixes
Date: Fri, 3 Apr 2015 13:39:28 -0700 [thread overview]
Message-ID: <1428093571-20407-1-git-send-email-aaron.brice@datasoft.com> (raw)
We were having intermittent problems writing to SRAM chip on SPI bus on vf610
SoM. Added support for CS setup and hold times to meet the SRAM spec. In the
process noticed that the baud rate was a little high.
Changes since v2:
* Incorporate fixes per Stefen Agner review, namely moved hard-coded 50ns
delays to device tree properties
* Fix for baud rate scale value remainders, reported by Andy Shevchenko
Changes since v1:
* More detail in commit message for clock rate fix
Aaron Brice (3):
spi: fsl-dspi: Fix clock rate scale values
devicetree: spi: fsl-dspi: Add cs-sck delays
spi: fsl-dspi: Add ~50ns delay between cs and sck
.../devicetree/bindings/spi/spi-fsl-dspi.txt | 8 ++
drivers/spi/spi-fsl-dspi.c | 97 ++++++++++++++++++----
2 files changed, 89 insertions(+), 16 deletions(-)
--
2.1.0
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next reply other threads:[~2015-04-03 20:39 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-03 20:39 Aaron Brice [this message]
[not found] ` <1428093571-20407-1-git-send-email-aaron.brice-vSOi0k5x9wFWk0Htik3J/w@public.gmane.org>
2015-04-03 20:39 ` [PATCH v3 1/3] spi: fsl-dspi: Fix clock rate scale values Aaron Brice
[not found] ` <1428093571-20407-2-git-send-email-aaron.brice-vSOi0k5x9wFWk0Htik3J/w@public.gmane.org>
2015-04-06 17:11 ` Mark Brown
2015-04-03 20:39 ` [PATCH v3 2/3] devicetree: spi: fsl-dspi: Add cs-sck delays Aaron Brice
[not found] ` <1428093571-20407-3-git-send-email-aaron.brice-vSOi0k5x9wFWk0Htik3J/w@public.gmane.org>
2015-04-06 17:12 ` Mark Brown
2015-04-03 20:39 ` [PATCH v3 3/3] spi: fsl-dspi: Add ~50ns delay between cs and sck Aaron Brice
[not found] ` <1428093571-20407-4-git-send-email-aaron.brice-vSOi0k5x9wFWk0Htik3J/w@public.gmane.org>
2015-04-06 17:12 ` Mark Brown
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