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Date:   Mon, 26 Jun 2023 20:51:35 +0200
From:   Marijn Suijten <marijn.suijten@somainline.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Cc:     Konrad Dybcio <konrad.dybcio@linaro.org>,
        Andy Gross <agross@kernel.org>,
        Bjorn Andersson <andersson@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley <conor+dt@kernel.org>,
        Michael Turquette <mturquette@baylibre.com>,
        Stephen Boyd <sboyd@kernel.org>,
        Rob Clark <robdclark@gmail.com>,
        Abhinav Kumar <quic_abhinavk@quicinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
        Sean Paul <sean@poorly.run>, David Airlie <airlied@gmail.com>,
        Daniel Vetter <daniel@ffwll.ch>,
        Krishna Manikandan <quic_mkrishn@quicinc.com>,
        ~postmarketos/upstreaming@lists.sr.ht,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@collabora.com>,
        Martin Botka <martin.botka@somainline.org>,
        Jami Kettunen <jami.kettunen@somainline.org>,
        linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org,
        Krzysztof Kozlowski <krzk@kernel.org>,
        linux-clk@vger.kernel.org, dri-devel@lists.freedesktop.org,
        freedreno@lists.freedesktop.org, Lux Aliaga <they@mint.lgbt>
Subject: Re: [PATCH 03/15] dt-bindings: clock: qcom,dispcc-sm6125: Require
 GCC PLL0 DIV clock
Message-ID: <uuy5prkjhhs66te7h6z3pu4lzj2cfbiqk6ftjijwoeqpw573av@ogs6cboanvzc>
References: <20230624-sm6125-dpu-v1-0-1d5a638cebf2@somainline.org>
 <20230624-sm6125-dpu-v1-3-1d5a638cebf2@somainline.org>
 <c9681bce-efa8-9b79-4bf6-837dd6a2dc12@linaro.org>
 <55b0ca89-8f2e-5383-59d4-6809e813abf8@linaro.org>
 <vnp263d43flny2ibt3n7fbloyi26enqrejnobogplfu5fcj6l3@s7zkxrsi2rde>
 <52c57cab-10cf-2e7e-2c1d-fa6506786d45@linaro.org>
 <jmtjuya4c423rmdlo4ubvvqndbxvgapal5otjqnejdpdd25izp@kewbjmqdu2xs>
 <6311f26f-79ee-c471-649f-5e0b4629cfcc@linaro.org>
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On 2023-06-26 20:29:37, Krzysztof Kozlowski wrote:
> On 26/06/2023 19:49, Marijn Suijten wrote:
> > On 2023-06-26 18:10:44, Krzysztof Kozlowski wrote:
> >> On 25/06/2023 21:48, Marijn Suijten wrote:
> >>> On 2023-06-24 11:08:54, Krzysztof Kozlowski wrote:
> >>>> On 24/06/2023 03:45, Konrad Dybcio wrote:
> >>>>> On 24.06.2023 02:41, Marijn Suijten wrote:
> >>>>>> The "gcc_disp_gpll0_div_clk_src" clock is consumed by the driver, will
> >>>>>> be passed from DT, and should be required by the bindings.
> >>>>>>
> >>>>>> Fixes: 8397c9c0c26b ("dt-bindings: clock: add QCOM SM6125 display clock bindings")
> >>>>>> Signed-off-by: Marijn Suijten <marijn.suijten@somainline.org>
> >>>>>> ---
> >>>>> Ideally, you'd stick it at the bottom of the list, as the items: order
> >>>>> is part of the ABI
> >>>>
> >>>> Yes, please add them to the end. Order is fixed.
> >>>
> >>> Disagreed for bindings that declare clock-names and when the driver
> >>> adheres to it, see my reply to Konrad's message.
> >>
> >> That's the generic rule, with some exceptions of course. Whether one
> >> chosen driver (chosen system and chosen version of that system) adheres
> >> or not, does not change it. Other driver behaves differently and ABI is
> >> for everyone, not only for your specific version of Linux driver.
> >>
> >> Follow the rule.
> > 
> > This has no relation to the driver (just that our driver adheres to the
> > bindings, as it is supposed to be).  The bindings define a mapping from
> > a clock-names=<> entry to a clock on the same index in the clocks=<>
> > array.  That relation remains the same with this change.
> 
> Not really, binding also defines the list of clocks - their order and
> specific entries. This changes.

And so it does in "dt-bindings: clock: qcom,dispcc-sm6125: Remove unused
GCC_DISP_AHB_CLK"?

- Marijn