linux-kernel - Re: [PATCH] ARM: dts: stm32: omit unused pinctrl groups from dtb files

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Message-ID: <20230920122916.GV637806@pengutronix.de>
Date:   Wed, 20 Sep 2023 14:29:16 +0200
From:   Sascha Hauer <s.hauer@...gutronix.de>
To:     Ahmad Fatoum <a.fatoum@...gutronix.de>
Cc:     linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        Conor Dooley <conor+dt@...nel.org>, kernel@...gutronix.de,
        linux-kernel@...r.kernel.org,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-stm32@...md-mailman.stormreply.com,
        Maxime Coquelin <mcoquelin.stm32@...il.com>
Subject: Re: [PATCH] ARM: dts: stm32: omit unused pinctrl groups from dtb
 files

On Wed, Sep 20, 2023 at 02:15:24PM +0200, Ahmad Fatoum wrote:
> Hello Sascha,
> 
> On 20.09.23 14:11, Sascha Hauer wrote:
> > stm32mp15-pinctrl.dtsi contains nearly all pinctrl groups collected from
> > all boards. Most of them end up unused by a board and only waste binary
> > space. Add /omit-if-no-ref/ to the groups to scrub the unused groups
> > from the dtbs.
> > 
> > Signed-off-by: Sascha Hauer <s.hauer@...gutronix.de>
> > ---
> >  arch/arm/boot/dts/st/stm32mp15-pinctrl.dtsi | 228 ++++++++++++++++++++
> >  1 file changed, 228 insertions(+)
> > 
> > diff --git a/arch/arm/boot/dts/st/stm32mp15-pinctrl.dtsi b/arch/arm/boot/dts/st/stm32mp15-pinctrl.dtsi
> > index e1df345801dc2..778a83471df4c 100644
> > --- a/arch/arm/boot/dts/st/stm32mp15-pinctrl.dtsi
> > +++ b/arch/arm/boot/dts/st/stm32mp15-pinctrl.dtsi
> > @@ -7,6 +7,7 @@
> >  
> >  &pinctrl {
> >  	adc1_ain_pins_a: adc1-ain-0 {
> > +		/omit-if-no-ref/
> 
> I think the correct place is above the node name that would be referenced,
> i.e. before adc1_ain_pins_a: adc1-ain-0 here.

Argh! You are right. I'll send a v2 once my fingers are no longer
bleeding.

Sascha


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