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Message-ID: <35845077-7839-41bf-9eca-82f8b0be29ec@linaro.org>
Date: Thu, 21 Dec 2023 14:16:30 +0100
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Subject: Re: [PATCH 2/8] clk: qcom: gdsc: Enable supply reglator in GPU GX
 handler
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To: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Cc: Bjorn Andersson <quic_bjorande@quicinc.com>,
 Bjorn Andersson <andersson@kernel.org>,
 Michael Turquette <mturquette@baylibre.com>, Stephen Boyd
 <sboyd@kernel.org>, Rob Herring <robh+dt@kernel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
 Conor Dooley <conor+dt@kernel.org>, Taniya Das <quic_tdas@quicinc.com>,
 Ulf Hansson <ulf.hansson@linaro.org>, Johan Hovold
 <johan+linaro@kernel.org>, Catalin Marinas <catalin.marinas@arm.com>,
 Will Deacon <will@kernel.org>, linux-arm-msm@vger.kernel.org,
 linux-clk@vger.kernel.org, devicetree@vger.kernel.org,
 linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
 linux-arm-kernel@lists.infradead.org
References: <20231220-sa8295p-gpu-v1-0-d8cdf2257f97@quicinc.com>
 <20231220-sa8295p-gpu-v1-2-d8cdf2257f97@quicinc.com>
 <8d206362-7d80-46dc-8474-871fc53abc20@linaro.org>
 <CAA8EJpoEqKv_rWB8468WJzxqPA5w7u_zmGJJ0oKWAyaB9-f0eQ@mail.gmail.com>
From: Konrad Dybcio <konrad.dybcio@linaro.org>
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On 21.12.2023 14:04, Dmitry Baryshkov wrote:
> On Thu, 21 Dec 2023 at 15:01, Konrad Dybcio <konrad.dybcio@linaro.org> wrote:
>>
>> On 21.12.2023 04:50, Bjorn Andersson wrote:
>>> The GX GDSC is modelled to aid the GMU in powering down the GPU in the
>>> event that the GPU crashes, so that it can be restarted again. But in
>>> the event that the power-domain is supplied through a dedicated
>>> regulator (in contrast to being a subdomin of another power-domain),
>>> something needs to turn that regulator on, both to make sure things are
>>> powered and to match the operation in gdsc_disable().
>>>
>>> Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
>>> ---
>>>  drivers/clk/qcom/gdsc.c | 8 +++++++-
>>>  1 file changed, 7 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/drivers/clk/qcom/gdsc.c b/drivers/clk/qcom/gdsc.c
>>> index 5358e28122ab..d1139c895503 100644
>>> --- a/drivers/clk/qcom/gdsc.c
>>> +++ b/drivers/clk/qcom/gdsc.c
>>> @@ -557,7 +557,13 @@ void gdsc_unregister(struct gdsc_desc *desc)
>>>   */
>>>  int gdsc_gx_do_nothing_enable(struct generic_pm_domain *domain)
>> I suppose the name is confusing now..
>>
>> But at the same time I can't come up with anything that's less than
>> like 6 words..
> 
> gdsc_gx_enable() ;-)
except not really only gx and not really enable :(

gdsc_shared_enable would probably be closer to our current
nomenclature..

Konrad