linux-kernel - Re: [PATCH] ARM: dts: rockchip: correct regular setting for act8846

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Message-ID: <7433998.EkqTVyWeUF@phil>
Date:   Wed, 24 May 2017 10:47:01 +0200
From:   Heiko Stuebner <heiko@...ech.de>
To:     Eddie Cai <eddie.cai.linux@...il.com>
Cc:     robh+dt@...nel.org, mark.rutland@....com, linux@...linux.org.uk,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ARM: dts: rockchip: correct regular setting for act8846

Am Mittwoch, 24. Mai 2017, 16:44:05 CEST schrieb Eddie Cai:
> 2017-05-24 16:17 GMT+08:00 Heiko Stuebner <heiko@...ech.de>:
> > Hi Eddie,
> >
> > Am Mittwoch, 24. Mai 2017, 15:33:41 CEST schrieb Eddie Cai:
> >> the previous setting of act8846 is just copy from firefly board. but
> >> the reload board is a little different from firefly board. let's correct
> >> it.
> >>
> >> Signed-off-by: Eddie Cai <eddie.cai.linux@...il.com>
> >> ---
> >>  arch/arm/boot/dts/rk3288-firefly-reload-core.dtsi | 21 +++++++++++----------
> >>  1 file changed, 11 insertions(+), 10 deletions(-)
> >>
> >> diff --git a/arch/arm/boot/dts/rk3288-firefly-reload-core.dtsi b/arch/arm/boot/dts/rk3288-firefly-reload-core.dtsi
> >> index 8134966..4cfa109 100644
> >> --- a/arch/arm/boot/dts/rk3288-firefly-reload-core.dtsi
> >> +++ b/arch/arm/boot/dts/rk3288-firefly-reload-core.dtsi
> >> @@ -179,6 +179,7 @@
> >>                               regulator-name = "vccio_sd";
> >>                               regulator-min-microvolt = <3300000>;
> >>                               regulator-max-microvolt = <3300000>;
> >> +                             regulator-always-on;
> >
> > the rest below looks pretty straight forward, but why does vccio_sd
> > need to be always on?
> >
> > I've checked the reload's schematics but did not find any further users
> > of vccio_sd that may warant this attribute.
> Oh, It's default on. thank you for point out my mistake. I will modify
> it in next version.

not default-on, but the mmc-core will turn on the vccio regulator on its
own during probe. So yes, please fix :-) .


Thanks
Heiko