linux-kernel - Re: [PATCH] of: property: Add fw

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Message-ID: <20210528033019.GA11683@lenovo>
Date:   Fri, 28 May 2021 11:30:19 +0800
From:   Orson Zhai <orsonzhai@...il.com>
To:     Saravana Kannan <saravanak@...gle.com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>,
        Orson Zhai <orson.zhai@...soc.com>
Subject: Re: [PATCH] of: property: Add fw_devlink support for pwms

On Thu, May 27, 2021 at 02:04:30PM -0700, Saravana Kannan wrote:
> On Thu, May 27, 2021 at 1:09 AM Orson Zhai <orsonzhai@...il.com> wrote:
> >
> > From: Orson Zhai <orson.zhai@...soc.com>
> >
> > pwms is often required by backlight in embedded devices. Add device link
> > support for pwms as well.
> >
> > Signed-off-by: Orson Zhai <orson.zhai@...soc.com>
> > ---
> >  drivers/of/property.c | 2 ++
> >  1 file changed, 2 insertions(+)
> >
> > diff --git a/drivers/of/property.c b/drivers/of/property.c
> > index 6c02863..93be977 100644
> > --- a/drivers/of/property.c
> > +++ b/drivers/of/property.c
> > @@ -1287,6 +1287,7 @@ DEFINE_SIMPLE_PROP(pinctrl6, "pinctrl-6", NULL)
> >  DEFINE_SIMPLE_PROP(pinctrl7, "pinctrl-7", NULL)
> >  DEFINE_SIMPLE_PROP(pinctrl8, "pinctrl-8", NULL)
> >  DEFINE_SIMPLE_PROP(remote_endpoint, "remote-endpoint", NULL)
> > +DEFINE_SIMPLE_PROP(pwms, "pwms", NULL)
> >  DEFINE_SUFFIX_PROP(regulators, "-supply", NULL)
> >  DEFINE_SUFFIX_PROP(gpio, "-gpio", "#gpio-cells")
> >
> > @@ -1371,6 +1372,7 @@ static const struct supplier_bindings of_supplier_bindings[] = {
> >         { .parse_prop = parse_pinctrl7, },
> >         { .parse_prop = parse_pinctrl8, },
> >         { .parse_prop = parse_remote_endpoint, .node_not_dev = true, },
> > +       { .parse_prop = parse_pwms, },
> >         { .parse_prop = parse_gpio_compat, },
> >         { .parse_prop = parse_interrupts, },
> >         { .parse_prop = parse_regulators, },
> 
> I already have a local patch for this and "reset" bindings. But I'm
> holding off on adding support for new properties till fw_devlink=on
> fully lands in 5.13. Trying to avoid inadvertently adding new
> dependency issues. For example, the remote_endpoint binding I added to
> fix one issue caused more dependency issues. So far I've fixed them
> all.

Got it. Good to know your plan.

> 
> So, yeah, temporary Nak for this.

No problem.

-Orson

> 
> -Saravana