linux-kernel - Re: [PATCH v5 3/9] phy: qcom-qusb2: Add generic QUSB2 V2 PHY support

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Message-ID: <CAD=FV=Wd1Y-4RvS+jrwMmnZ7tZJdPnQOx8bpQ_QExgwkDNH0zg@mail.gmail.com>
Date:   Thu, 2 Apr 2020 15:58:22 -0700
From:   Doug Anderson <dianders@...omium.org>
To:     John Stultz <john.stultz@...aro.org>
Cc:     Sandeep Maheswaram <sanm@...eaurora.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Kishon Vijay Abraham I <kishon@...com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Stephen Boyd <swboyd@...omium.org>,
        Matthias Kaehlcke <mka@...omium.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, Manu Gautam <mgautam@...eaurora.org>,
        YongQin Liu <yongqin.liu@...aro.org>
Subject: Re: [PATCH v5 3/9] phy: qcom-qusb2: Add generic QUSB2 V2 PHY support

Hi,

On Thu, Apr 2, 2020 at 2:39 PM John Stultz <john.stultz@...aro.org> wrote:
>
> On Mon, Mar 9, 2020 at 2:54 AM Sandeep Maheswaram <sanm@...eaurora.org> wrote:
> > @@ -774,8 +774,8 @@ static const struct of_device_id qusb2_phy_of_match_table[] = {
> >                 .compatible     = "qcom,msm8998-qusb2-phy",
> >                 .data           = &msm8998_phy_cfg,
> >         }, {
> > -               .compatible     = "qcom,sdm845-qusb2-phy",
> > -               .data           = &sdm845_phy_cfg,
> > +               .compatible     = "qcom,qusb2-v2-phy",
> > +               .data           = &qusb2_v2_phy_cfg,
> >         },
> >         { },
> >  };
>
> Just as a heads up, Yongqin (cc'ed) reported this patch (now upstream)
> seems to be causing trouble on the db845c.
>
> It seems like its removing support for the "qcom,sdm845-qusb2-phy"
> compatible string, which is documented:
>   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/devicetree/bindings/phy/qcom,qusb2-phy.yaml#n23
>
> and already in use:
>    https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm64/boot/dts/qcom/sdm845.dtsi#n2389
>
> Should this instead have been an addition of the "qcom,qusb2-v2-phy",
> line instead of replacing "qcom,sdm845-qusb2-phy"?

To avoid forking the discussion into two threads, I'll suggest that we
focus on keeping the discussion in reply to your newly proposed patch.
I've already replied there:

https://lore.kernel.org/r/CAD=FV=VGT75c4_ErQAJgNtcCd2Jzv0A2KpfEkS637GqOhamj9Q@mail.gmail.com

-Doug