linux-kernel - Re: [PATCH v3 2/9] clk: ralink: add clock and reset driver for MTMIPS SoCs

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Message-ID: <CAMhs-H-uc_VzZ4MS0VLn9AajFRM-BYKEn4zGJ36H3EmL0oX-WA@mail.gmail.com>
Date:   Sat, 17 Jun 2023 21:11:46 +0200
From:   Sergio Paracuellos <sergio.paracuellos@...il.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Shiji Yang <yangshiji66@...look.com>, arinc.unal@...nc9.com,
        devicetree@...r.kernel.org, john@...ozen.org,
        krzysztof.kozlowski+dt@...aro.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-mips@...r.kernel.org,
        matthias.bgg@...il.com, mturquette@...libre.com,
        p.zabel@...gutronix.de, robh+dt@...nel.org, sboyd@...nel.org,
        tsbogend@...ha.franken.de
Subject: Re: [PATCH v3 2/9] clk: ralink: add clock and reset driver for MTMIPS SoCs

On Sat, Jun 17, 2023 at 7:20 PM Krzysztof Kozlowski
<krzysztof.kozlowski@...aro.org> wrote:
>
> On 17/06/2023 17:37, Sergio Paracuellos wrote:
> >>> The case of
> >>> searching for compatible is a mess since as you can see in the
> >>> bindings there are tons of compatibles to search for, then (this code
> >>> is common to all ralink platforms).
> >>
> >> Compatible is one of the ways using ABI.
> >
> > Ok so it is also a broken approach, then.
>
> What is exactly broken approach? Fetching by compatibles? Somehow many
> other platforms do not have problem with that, even for multiple
> compatibles. Why yours is special?

I guess it is not special but I cannot figure out the way of getting
this clock using compatibles...

>
> Anyway, it is not a correct way to get clocks frequency. There is CCF
> for this, although maybe Ralink does not support it?

This means to use clk_get() if I understand properly but it does not
work at all for ralink...

>
> Best regards,
> Krzysztof
>

Thanks,
    Sergio Paracuellos