linux-kernel - Re: [PATCH v2] arm64/hisilicon: fix SDcard detection

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Date:   Sat, 2 Feb 2019 09:52:52 +0100
From:   Vincent Guittot <vincent.guittot@...aro.org>
To:     Wei Xu <xuwei5@...ilicon.com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        LAK <linux-arm-kernel@...ts.infradead.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Linus Walleij <linus.walleij@...aro.org>
Subject: Re: [PATCH v2] arm64/hisilicon: fix SDcard detection

Hi Wei,

On Fri, 1 Feb 2019 at 18:00, Wei Xu <xuwei5@...ilicon.com> wrote:
>
> Hi Vincent,
>
> On 1/14/2019 8:24 AM, Vincent Guittot wrote:
> > The SDcard detection of hikey960 is active low so cd-inverted is wrong.
> > Instead of adding cd-inverted, we should better set correctly cd-gpios
> > to use GPIO_ACTIVE_LOW.
> >
> > Signed-off-by: Vincent Guittot <vincent.guittot@...aro.org>
>
> Updated the subject as Leo suggested and applied to the hisilicon tree.

Thanks

> Thanks!
>
> Best Regards,
> Wei
>
> > ---
> >
> > SD card detection was not working on v5.0-rc1 but patch
> > https://marc.info/?l=linux-mmc&m=154637189021211&w=2 makes it work.
> > Nevertheles, latest changes in of_mmc_detection makes possible to have
> > a correct DT config.
> >
> >  arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dts | 3 +--
> >  1 file changed, 1 insertion(+), 2 deletions(-)
> >
> > diff --git a/arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dts b/arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dts
> > index 71bfe41..dc314e7 100644
> > --- a/arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dts
> > +++ b/arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dts
> > @@ -665,8 +665,7 @@
> >       sd-uhs-sdr50;
> >       sd-uhs-sdr104;
> >       disable-wp;
> > -     cd-inverted;
> > -     cd-gpios = <&gpio25 3 0>;
> > +     cd-gpios = <&gpio25 3 GPIO_ACTIVE_LOW>;
> >       pinctrl-names = "default";
> >       pinctrl-0 = <&sd_pmx_func
> >                    &sd_clk_cfg_func
> >
>