From: Sascha Hauer <s.hauer-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
To: Fabio Estevam <festevam-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Chris Ruehl <chris.ruehl-CR359r9tUDPXPF5Rlphj1Q@public.gmane.org>,
Anton Bondarenko
<anton.bondarenko.sama-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Sascha Hauer <kernel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>,
"linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: spi-imx: add support for single burst mode (8,16,32)
Date: Tue, 31 May 2016 13:06:08 +0200 [thread overview]
Message-ID: <20160531110608.GG31666@pengutronix.de> (raw)
In-Reply-To: <CAOMZO5CiW3J+naHfitjv59i4xisYB1R3ATs2qvz4mLh_FMyf+g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
On Tue, May 31, 2016 at 07:43:37AM -0300, Fabio Estevam wrote:
> [Adding Sascha and Anton in Cc]
>
> On Tue, May 31, 2016 at 6:40 AM, Chris Ruehl <chris.ruehl-CR359r9tUDPXPF5Rlphj1Q@public.gmane.org> wrote:
> > Hi,
> >
> > as imx6 using multiple burst to send data to spi slaves and drop the
> > chipselect between the words by default my sensor NXP MPL115A1 wasn't
> > working.
I generally recommend to use GPIO Chip selects. The SPI controller has
its own ideas when to assert the chipselects which is hard to match (if
possible at all) with what Linux SPI expects. See the cs-gpios device
tree property.
Sascha
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next prev parent reply other threads:[~2016-05-31 11:06 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-31 9:40 spi-imx: add support for single burst mode (8,16,32) Chris Ruehl
[not found] ` <574D5C2B.1000400-CR359r9tUDPXPF5Rlphj1Q@public.gmane.org>
2016-05-31 10:43 ` Fabio Estevam
[not found] ` <CAOMZO5CiW3J+naHfitjv59i4xisYB1R3ATs2qvz4mLh_FMyf+g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-05-31 11:06 ` Sascha Hauer [this message]
[not found] ` <20160531110608.GG31666-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2016-06-01 1:54 ` Chris Ruehl
[not found] ` <574E405F.9090000-CR359r9tUDPXPF5Rlphj1Q@public.gmane.org>
2016-06-01 6:30 ` Sascha Hauer
[not found] ` <20160601063029.GB11074-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2016-06-01 6:39 ` Chris Ruehl
2016-05-31 11:20 ` Vladimir Zapolskiy
[not found] ` <574D7366.5050203-nmGgyN9QBj3QT0dZR+AlfA@public.gmane.org>
2016-06-01 1:48 ` Chris Ruehl
2016-05-31 13:08 ` Mark Brown
[not found] ` <20160531130828.GB29837-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2016-06-01 1:58 ` Chris Ruehl
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