linux-kernel - Re: [PATCH 1/2] dt-bindings: pinctrl: meson: Add drive-strength property

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Date:   Thu, 4 Apr 2019 10:42:03 +0700
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Jerome Brunet <jbrunet@...libre.com>
Cc:     Rob Herring <robh@...nel.org>, Kevin Hilman <khilman@...libre.com>,
        Guillaume La Roque <glaroque@...libre.com>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        "open list:ARM/Amlogic Meson..." <linux-amlogic@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>
Subject: Re: [PATCH 1/2] dt-bindings: pinctrl: meson: Add drive-strength property

On Sun, Mar 31, 2019 at 2:04 PM Jerome Brunet <jbrunet@...libre.com> wrote:
> On Sun, 2019-03-31 at 01:40 -0500, Rob Herring wrote:
> > On Thu, Mar 14, 2019 at 05:37:24PM +0100, Jerome Brunet wrote:
> > > From: Guillaume La Roque <glaroque@...libre.com>

> > > +Optional properties :
> > > + - drive-strength: Drive strength for the specified pins in uA.
> >
> > The standard definition says this is in mA.
>
> Yes, the problem we have and the solutions we are thinking about are explained
> in detail in the cover letter of this patchset. Could you share your opinion
> on it ?

I like your idea with drive-strength-uA but I need the second opinion from the
device tree people.

Yours,
Linus Walleij