From: Mark Brown <broonie@kernel.org>
To: Michal Suchanek <hramrach@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Ingo Molnar <mingo@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Kees Cook <keescook@chromium.org>,
Thomas Gleixner <tglx@linutronix.de>,
Dan Williams <dan.j.williams@intel.com>,
Tejun Heo <tj@kernel.org>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Davidlohr Bueso <dave@stgolabs.net>,
Andrey Ryabinin <aryabinin@virtuozzo.com>,
Nikolay Aleksandrov <nikolay@cumulusnetworks.com>,
Dmitry Vyukov <dvyukov@google.com>,
Adrien Schildknecht <adrien+dev@schischi.me>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-spi <linux-spi@vger.kernel.org>
Subject: Re: [PATCH 2/3] spi: of: allow instantiating slaves without a driver
Date: Sun, 26 Jun 2016 12:58:15 +0100 [thread overview]
Message-ID: <20160626115815.GN28202@sirena.org.uk> (raw)
In-Reply-To: <CAOMqctQernycZkc0Wia9EierT1PhfcYAPWc=89LgTC-DBgkg5A@mail.gmail.com>
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On Sun, Jun 26, 2016 at 01:35:46PM +0200, Michal Suchanek wrote:
> On 26 June 2016 at 13:21, Mark Brown <broonie@kernel.org> wrote:
> > You can just add the entire slave node in the overlay, it's not clear
> > that this buys us anything useful
> You have to target the master node and specify the CS in the overlay
> if you create the whole node. If you target the slave node you have
> the CS specified in the board devicetree and the overlay can apply to
> multiple boards without change.
No, there's a lot more to having overlays to board-neutral connectors...
> > and this needs to be joined up with the work going on to allow
> > expansion connector overlays to be loaded in the first place.
> The overlays work equally well before and after this patch. I don't
> see any problem with them other than part of the infrastructure
> missing in mainline kernel.
...you're missing all this stuff here - currently the active work on
this is being done by Patelis. It's not at all clear to me that
referring to a slave rather than a master would be any easier in a board
neutral overlay.
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next prev parent reply other threads:[~2016-06-26 11:58 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-24 14:20 [PATCH 0/3] Another stab at making spidev usable with devicetree Michal Suchanek
2016-06-24 14:20 ` [PATCH 1/3] spi: spidev: fix the check for spidev in dt Michal Suchanek
2016-06-26 1:09 ` Mark Brown
2016-06-26 1:56 ` Michal Suchanek
2016-06-26 1:13 ` Mark Brown
2016-06-26 2:12 ` Michal Suchanek
2016-06-26 11:05 ` Mark Brown
2016-06-24 14:20 ` [PATCH 2/3] spi: of: allow instantiating slaves without a driver Michal Suchanek
2016-06-26 1:15 ` Mark Brown
2016-06-26 2:23 ` Michal Suchanek
2016-06-26 11:21 ` Mark Brown
2016-06-26 11:35 ` Michal Suchanek
2016-06-26 11:58 ` Mark Brown [this message]
2016-06-26 12:39 ` Michal Suchanek
2016-06-26 12:45 ` Mark Brown
2016-06-26 12:53 ` Michal Suchanek
2016-06-26 12:57 ` Mark Brown
2016-06-26 15:19 ` Michal Suchanek
2016-06-26 17:25 ` Mark Brown
2016-06-24 14:20 ` [PATCH 3/3] drivers core: allow id match override when manually binding driver Michal Suchanek
2016-06-26 1:17 ` Mark Brown
2016-06-26 4:14 ` Dan Williams
2016-06-26 6:44 ` Michal Suchanek
2016-06-26 9:26 ` Geert Uytterhoeven
2016-06-26 18:28 ` Greg Kroah-Hartman
2016-06-26 19:07 ` Michal Suchanek
2016-06-27 19:09 ` Greg Kroah-Hartman
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