linux-kernel - Re: [PATCH] ARM: dts: document pinctrl-single,pins when #pinctrl-cells = 2

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Date:   Wed, 23 Sep 2020 18:34:21 -0700
From:   Trent Piepho <tpiepho@...il.com>
To:     Tony Lindgren <tony@...mide.com>
Cc:     Drew Fustini <drew@...gleboard.org>,
        Rob Herring <robh+dt@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Jason Kridner <jkridner@...gleboard.org>,
        Robert Nelson <robertcnelson@...il.com>,
        linux-omap@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org,
        linux-gpio <linux-gpio@...r.kernel.org>,
        Christina Quast <cquast@...overdisplays.com>
Subject: Re: [PATCH] ARM: dts: document pinctrl-single,pins when
 #pinctrl-cells = 2

On Tue, Sep 22, 2020 at 11:57 PM Tony Lindgren <tony@...mide.com> wrote:
>
> Also FYI, folks have also complained for a long time that the pinctrl-single
> binding mixes mux and conf values while they should be handled separately.
>

Instead of combining two fields when the dts is generated they are now
combined when the pinctrl-single driver reads the dts.  Other than
this detail, the result is the same.  The board dts source is the
same.  The value programmed into the pinctrl register is the same.
There is no mechanism currently that can alter that value in any way.

What does combining them later allow that is not possible now?