linux-kernel - Re: [PATCH 8/8] arm64: dts: qcom: sa8155p-adp: Add base dts file

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Date:   Tue, 8 Jun 2021 02:52:28 +0530
From:   Bhupesh Sharma <bhupesh.sharma@...aro.org>
To:     Vinod Koul <vkoul@...nel.org>
Cc:     linux-arm-msm@...r.kernel.org,
        Linus Walleij <linus.walleij@...aro.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Andy Gross <agross@...nel.org>,
        devicetree <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        bhupesh.linux@...il.com
Subject: Re: [PATCH 8/8] arm64: dts: qcom: sa8155p-adp: Add base dts file

Hi Vinod,

Thanks for your review.

On Mon, 7 Jun 2021 at 20:52, Vinod Koul <vkoul@...nel.org> wrote:
>
> On 07-06-21, 17:08, Bhupesh Sharma wrote:
> > Add base DTS file for sa8155p-adp and enable boot to console,
> > tlmm reserved range and also include pmic file(s).
>
> I see ufs added too, pls mention that as well

Oops, missed that. Will fix it in v2.

>  --- a/arch/arm64/boot/dts/qcom/Makefile
> > +++ b/arch/arm64/boot/dts/qcom/Makefile
> > @@ -71,6 +71,7 @@ dtb-$(CONFIG_ARCH_QCOM)     += sdm845-xiaomi-beryllium.dtb
> >  dtb-$(CONFIG_ARCH_QCOM)      += sdm850-lenovo-yoga-c630.dtb
> >  dtb-$(CONFIG_ARCH_QCOM)      += sm8150-hdk.dtb
> >  dtb-$(CONFIG_ARCH_QCOM)      += sm8150-mtp.dtb
> > +dtb-$(CONFIG_ARCH_QCOM)      += sa8155p-adp.dtb
>
> I think this should go before sdm..

Oh, ok, I thought of keeping all boards based on sm8150 SoC together.
But alphabetically, it makes more sense to put it earlier.

> > +             vdd_usb_hs_core:
> > +             vdda_pll_hv_cc_ebi01:
> > +             vdda_pll_hv_cc_ebi23:
> > +             vdda_ufs_2ln_core:
> > +             vdda_ufs_2ln_core:
> > +             vdda_usb_ss_core:
> > +             vdda_usb_ss_dp_core_1:
> > +             vdda_usb_ss_dp_core_2:
> > +             vdda_sp_sensor:
> > +             vdda_qlink_lv:
> > +             vdda_qlink_lv_ck:
> > +             vdda_qrefs_0p875_5:
>
> I didnt find these labels very useful, so maybe remove?
> It helped me to understand that a regulator is vreg_l5a_0p88 as it
> implies I am using l5a with 0p88V :)

While a few labels like 'vdd_usb_hs_core' are used in this patch (for
example) to denote 'vdda-pll-supply ' of 'usb_1_hsphy', the others
would be required as we enable further on-boards peripherals in the
dts.

I will recheck and limit these further in v2.

> > +             vreg_l5a_0p88: ldo5 {
> > +                     regulator-min-microvolt = <880000>;
> > +                     regulator-max-microvolt = <880000>;
> > +                     regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
>
> Pls do add regulator-name property, it helps in understanding which ldo
> in logs/debugfs, otherwise ldo5 will comes for both pmics

That's a good point. Will fix this in v2.

Regards,
Bhupesh

> --
> ~Vinod