Subject: [linux-sunxi] Re: [PATCH] ARM: dts: sun6i-a31-app4-evb1.dts: Use sunxi-common-regulators.dtsi

From: [email-masked] (Maxime Ripard)
Date: Fri, 9 May 2014 12:27:40 -0500

On Fri, May 09, 2014 at 02:39:17PM +0200, Hans de Goede wrote:
> Hi,
> 
> On 05/09/2014 11:32 AM, Boris BREZILLON wrote:
> > 
> > On 09/05/2014 11:05, Hans de Goede wrote:
> >> Hi,
> >>
> >> On 05/09/2014 10:55 AM, Boris BREZILLON wrote:
> >>> On 09/05/2014 10:43, Hans de Goede wrote:
> >>>> Signed-off-by: Hans de Goede <[email-masked]>
> >>>> ---
> >>>>  arch/arm/boot/dts/sun6i-a31-app4-evb1.dts | 8 +-------
> >>>>  1 file changed, 1 insertion(+), 7 deletions(-)
> >>>>
> >>>> diff --git a/arch/arm/boot/dts/sun6i-a31-app4-evb1.dts b/arch/arm/boot/dts/sun6i-a31-app4-evb1.dts
> >>>> index 270ab97..2bbf886 100644
> >>>> --- a/arch/arm/boot/dts/sun6i-a31-app4-evb1.dts
> >>>> +++ b/arch/arm/boot/dts/sun6i-a31-app4-evb1.dts
> >>>> @@ -13,6 +13,7 @@
> >>>>  
> >>>>  /dts-v1/;
> >>>>  /include/ "sun6i-a31.dtsi"
> >>>> +/include/ "sunxi-common-regulators.dtsi"
> >>>>  
> >>>>  / {
> >>>>  	model = "Allwinner A31 APP4 EVB1 Evaluation Board";
> >>>> @@ -49,15 +50,8 @@
> >>>>  	};
> >>>>  
> >>>>  	reg_usb1_vbus: usb1-vbus {
> >>>> -		compatible = "regulator-fixed";
> >>>> -		pinctrl-names = "default";
> >>>>  		pinctrl-0 = <&usb1_vbus_pin_a>;
> >>>> -		regulator-name = "usb1-vbus";
> >>>> -		regulator-min-microvolt = <5000000>;
> >>>> -		regulator-max-microvolt = <5000000>;
> >>>> -		enable-active-high;
> >>>>  		gpio = <&pio 7 27 0>;
> >>>>  		status = "okay";
> >>>>  	};
> >>> I guess we could do the same for usb1_vbus_pin_a (keep the common
> >>> definition and change the allwinner,pins property).
> >> Hmm, what we do with other boards when the pin does not match the
> >> default is change the node name to something baord specific, ie
> >> usb1_vbus_pin_app4_evb1
> > 
> > Okay.
> > How did you decide which pins should be put in the default definitions
> > (the most used ones among available boards ?) ?
> 
> The pins used there are used on all-most all A10 and A20 boards,
> the sun5i (A10s / A13) boards seem to not really have any standard gpio
> they use, and I have not seen enough A31 boards yet to say anything sensible.
> 
> We may need to rename the standard pins to include the platform name if
> A31 also uses the same pin everywhere (but a different one from A10).
> 
> > I'm not sure defining new pin states for each board is a good solution,
> > because you'll embed unneeded pin states in your DTB.
> > Anyway, this is your call :-).
> > 
> >> Which is why I did not remove the common bits from the pin,
> >> I did not notice you did not use a board specific name here.
> > 
> > Then I guess it should be fixed in the same series.
> > BTW, AFAIK the original patch adding support for the APP4 EVB1 board has
> > not been applied yet, so I think we can fix it send a v2 of this patch.
> 
> It is already in Maxime's dt-for-3.16 tree, so it is probably better to fix
> this with a followup patch.

Actually, it's not (yet). I'll squash it into my serie.

Thanks!
Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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