linux-kernel - Re: [PATCH 3/4] MIPS: GCW0: Adjust pinctrl related code in device tree.

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Date:   Tue, 22 Jun 2021 22:41:43 +0800
From:   周琰杰 <zhouyanjie@...yeetech.com>
To:     Paul Cercueil <paul@...ndingux.net>
Cc:     tsbogend@...ha.franken.de, robh+dt@...nel.org,
        linux-mips@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, dongsheng.qiu@...enic.com,
        aric.pzqi@...enic.com, rick.tyliu@...enic.com,
        sihui.liu@...enic.com, jun.jiang@...enic.com,
        sernia.zhou@...mail.com
Subject: Re: [PATCH 3/4] MIPS: GCW0: Adjust pinctrl related code in device
 tree.

Hi Paul,

于 Tue, 22 Jun 2021 15:05:25 +0100
Paul Cercueil <paul@...ndingux.net> 写道:

> Hi Zhou,
> 
> Le mar., juin 22 2021 at 21:51:19 +0800, 周琰杰 
> <zhouyanjie@...yeetech.com> a écrit :
> > Hi Paul,
> > 
> > 于 Tue, 22 Jun 2021 13:46:57 +0100
> > Paul Cercueil <paul@...ndingux.net> 写道:
> >   
> >>  Hi Zhou,
> >> 
> >>  Le mar., juin 22 2021 at 15:37:24 +0800, 周琰杰 (Zhou Yanjie)
> >>  <zhouyanjie@...yeetech.com> a écrit :  
> >>  > Change the "lcd-24bit" in the pinctrl groups to "lcd-8bit",
> >>  > "lcd-16bit", "lcd-18bit", "lcd-24bit", since the pinctrl
> >>  > driver has done the necessary splitting of the lcd group,
> >>  > and it is convenient to further streamline the lcd-24bit
> >>  > group in the subsequent pinctrl driver.
> >>  >
> >>  > Signed-off-by: 周琰杰 (Zhou Yanjie) <zhouyanjie@...yeetech.com>
> >>  > ---
> >>  >  arch/mips/boot/dts/ingenic/gcw0.dts | 2 +-
> >>  >  1 file changed, 1 insertion(+), 1 deletion(-)
> >>  >
> >>  > diff --git a/arch/mips/boot/dts/ingenic/gcw0.dts
> >>  > b/arch/mips/boot/dts/ingenic/gcw0.dts
> >>  > index f4c04f2..dec3ba6f 100644
> >>  > --- a/arch/mips/boot/dts/ingenic/gcw0.dts
> >>  > +++ b/arch/mips/boot/dts/ingenic/gcw0.dts
> >>  > @@ -393,7 +393,7 @@
> >>  >  &pinctrl {
> >>  >  	pins_lcd: lcd {
> >>  >  		function = "lcd";
> >>  > -		groups = "lcd-24bit";
> >>  > +		groups = "lcd-8bit", "lcd-16bit", "lcd-18bit",
> >>  > "lcd-24bit";  
> >> 
> >>  No, I'm pretty sure this won't work, since "lcd-24bit" contains
> >> pins that are also contained by the other groups.
> >>   
> > 
> > Sure, it seems that we should modify the pinctrl first, then modify 
> > the
> > dts, and then put them in the same series, so as to ensure that
> > they do
> > not cause damage.  
> 
> No, the "lcd-24bit" group is ABI now. We can't change it...
> 

Sure.

Thanks and best regards!

> -Paul
> 
> > 
> > Thanks and best regards!
> >   
> >>  -Paul
> >>   
> >>  >  	};
> >>  >
> >>  >  	pins_uart2: uart2 {
> >>  > --
> >>  > 2.7.4
> >>  >  
> >>   
> >   
>