Thread (11 messages) 11 messages, 5 authors, 2017-01-26

[linux-sunxi] [PATCH 1/2] drivers: pinctrl: add driver for Allwinner H5 SoC

From: andre.przywara@arm.com (André Przywara)
Date: 2017-01-09 00:16:13
Also in: linux-gpio, lkml

On 05/01/17 22:42, Maxime Ripard wrote:
On Fri, Dec 30, 2016 at 01:55:44PM +0100, Linus Walleij wrote:
quoted
On Mon, Dec 26, 2016 at 3:33 PM, Andr? Przywara [off-list ref] wrote:
quoted
So while this patch technically looks correct, I was wondering if we
should really explore the possibility of making the whole of sunxi
pinctrl DT controlled.
I brought this up a while ago, but people weren't overly enthusiastic
about it, though their argument weren't really convincing to me[1].

So:
As this "driver" here is basically a table linking GPIO bit settings
(the actual mux value) to names and every pin we care about needs to be
enumerated in the DT anyway, why not just add something like:
allwinner,pinmux = <4>;
to each pin(group) in the DT and get rid of this "driver" file here
entirely?
I'm open to that if you can use pinctrl-single which is in the kernel
for this purpose only, and is used with both OMAPs and HiSilicon.
I'm not open to that, and I'm getting tired of discussing it over and
over again. Andre, if you want to be convinced again, please read the
last discussion we had on this topic.
As I said: It didn't convince me back then. And frankly we didn't really
discuss it back then, I just refrained from entering a discussion
against _two_ maintainers at this time, since my capacity on this kind
of email threads is really very limited - especially for something that
is a hobby to me.

It isn't the highest priority on my list, but I am still planning on
sketching something, so that we can discuss about actual code.
As it seems like your new patches bring some relief to the immediate
copy&paste pain (though the actual DT aspect still remains), I will shut
up - for now ;-)

Cheers,
Andre.
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