linux-kernel - Re: [PATCH V2 6/7] arm64: dts: qcom: ipq9574: Add support for nsscc node

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Message-ID: <CAMuHMdXx_b-uubonRH5=Tcxo+ddxg2wXvRNQNjhMrfvSFh0Xcw@mail.gmail.com>
Date:   Wed, 13 Sep 2023 10:23:50 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc:     Devi Priya <quic_devipriy@...cinc.com>, andersson@...nel.org,
        agross@...nel.org, konrad.dybcio@...aro.org,
        mturquette@...libre.com, sboyd@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        catalin.marinas@....com, will@...nel.org, p.zabel@...gutronix.de,
        richardcochran@...il.com, arnd@...db.de, geert+renesas@...der.be,
        nfraprado@...labora.com, rafal@...ecki.pl, peng.fan@....com,
        linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, netdev@...r.kernel.org,
        quic_saahtoma@...cinc.com
Subject: Re: [PATCH V2 6/7] arm64: dts: qcom: ipq9574: Add support for nsscc node

Hi Dmitry,

On Fri, Aug 25, 2023 at 1:28 PM Dmitry Baryshkov
<dmitry.baryshkov@...aro.org> wrote:
> On Fri, 25 Aug 2023 at 12:15, Devi Priya <quic_devipriy@...cinc.com> wrote:
> > Add a node for the nss clock controller found on ipq9574 based devices.
> >
> > Signed-off-by: Devi Priya <quic_devipriy@...cinc.com>
> > ---
> >  Changes in V2:
> >         - Dropped the fixed clock node gcc_gpll0_out_aux and added
> >           support for the same in gcc driver
> >         - Updated the node name to clock-controller@...00000
> >         - Added clock-names to retrieve the nssnoc clocks and add them
> >           to the list of pm clocks in nss driver
> >
> >  arch/arm64/boot/dts/qcom/ipq9574.dtsi | 48 +++++++++++++++++++++++++++
> >  1 file changed, 48 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/qcom/ipq9574.dtsi b/arch/arm64/boot/dts/qcom/ipq9574.dtsi
> > index 51aba071c1eb..903311547e96 100644
> > --- a/arch/arm64/boot/dts/qcom/ipq9574.dtsi
> > +++ b/arch/arm64/boot/dts/qcom/ipq9574.dtsi
> > @@ -722,6 +742,34 @@ frame@...8000 {
> >                                 status = "disabled";
> >                         };
> >                 };
> > +
> > +               nsscc: clock-controller@...00000 {
> > +                       compatible = "qcom,ipq9574-nsscc";
> > +                       reg = <0x39b00000 0x80000>;
> > +                       clocks = <&gcc GCC_NSSNOC_NSSCC_CLK>,
> > +                                <&gcc GCC_NSSNOC_SNOC_CLK>,
> > +                                <&gcc GCC_NSSNOC_SNOC_1_CLK>,
> > +                                <&bias_pll_cc_clk>,
> > +                                <&bias_pll_nss_noc_clk>,
> > +                                <&bias_pll_ubi_nc_clk>,
> > +                                <&gcc GPLL0_OUT_AUX>,
> > +                                <0>,
> > +                                <0>,
> > +                                <0>,
> > +                                <0>,
> > +                                <0>,
> > +                                <0>,
> > +                                <&xo_board_clk>;
>
> If you move xo_board closer to the start of the list, it will be
> slightly easier to review.
>
> > +                       clock-names = "nssnoc_nsscc", "nssnoc_snoc", "nssnoc_snoc_1",
> > +                                     "bias_pll_cc_clk", "bias_pll_nss_noc_clk",
> > +                                     "bias_pll_ubi_nc_clk", "gpll0_out_aux", "uniphy0_nss_rx_clk",
> > +                                     "uniphy0_nss_tx_clk", "uniphy1_nss_rx_clk",
> > +                                     "uniphy1_nss_tx_clk", "uniphy2_nss_rx_clk",
> > +                                     "uniphy2_nss_tx_clk", "xo_board_clk";
>
> You are using clock indices. Please drop clock-names.

What do you mean by "using clock indices"?
Note that the "clock-names" property is required according to the DT bindings.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds