From: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Geert Uytterhoeven <geert-Td1EMuHUCqxL1ZNQvxDV9g@public.gmane.org>
Cc: Micka <mickamusset-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
linux-spi <linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: am335x: spi driver and two chip select
Date: Wed, 13 Apr 2016 05:51:41 +0100 [thread overview]
Message-ID: <20160413045141.GD14664@sirena.org.uk> (raw)
In-Reply-To: <CAMuHMdWtHYNLcbX65HzuV6fyPENMR75XrVQ8RkW=y_T=hN44+g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
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On Tue, Apr 12, 2016 at 03:50:21PM +0200, Geert Uytterhoeven wrote:
> AFAIU, spi_master.setup() should not modify registers immediately when
> supporting more than a single CS signal, while omap2_mcspi_setup_transfer()
> seems to do that.
Yes, this is a very common bug.
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next prev parent reply other threads:[~2016-04-13 4:51 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-12 13:42 am335x: spi driver and two chip select Micka
[not found] ` <CAF+MRt=ZJP2fssLHRUoR9T9EPfWEPN1LC0CLxZ0CgJQy01S3Rw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-04-12 13:50 ` Geert Uytterhoeven
[not found] ` <CAMuHMdWtHYNLcbX65HzuV6fyPENMR75XrVQ8RkW=y_T=hN44+g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-04-13 4:51 ` Mark Brown [this message]
[not found] ` <CAF+MRtkyjeu6baWXX-hJathGjAkwz+REExzUBNWtJCROv5KrtA@mail.gmail.com>
[not found] ` <CAF+MRtkyjeu6baWXX-hJathGjAkwz+REExzUBNWtJCROv5KrtA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-04-13 4:57 ` Mark Brown
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