From: Taniya Das <taniya.das@oss.qualcomm.com>
To: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>,
Bjorn Andersson <andersson@kernel.org>,
Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>,
Abel Vesa <abel.vesa@oss.qualcomm.com>,
Rob Clark <robin.clark@oss.qualcomm.com>,
Sean Paul <sean@poorly.run>,
Konrad Dybcio <konradybcio@kernel.org>,
Akhil P Oommen <akhilpo@oss.qualcomm.com>,
Dmitry Baryshkov <lumag@kernel.org>,
Abhinav Kumar <abhinav.kumar@linux.dev>,
Jessica Zhang <jesszhan0024@gmail.com>,
Marijn Suijten <marijn.suijten@somainline.org>,
David Airlie <airlied@gmail.com>, Simona Vetter <simona@ffwll.ch>
Cc: Ajit Pandey <ajit.pandey@oss.qualcomm.com>,
Imran Shaik <imran.shaik@oss.qualcomm.com>,
Jagadeesh Kona <jagadeesh.kona@oss.qualcomm.com>,
linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org,
linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
freedreno@lists.freedesktop.org
Subject: Re: [PATCH 4/6] clk: qcom: gxclkctl: Remove GX/GMxC rail votes to align with IFPC
Date: Wed, 8 Apr 2026 12:55:59 +0530 [thread overview]
Message-ID: <a573a9cc-7426-4d80-ac9f-e084e72207b2@oss.qualcomm.com> (raw)
In-Reply-To: <73196147-0133-4646-927d-dbe93c254286@oss.qualcomm.com>
On 4/7/2026 4:59 PM, Konrad Dybcio wrote:
>>
>> #include <dt-bindings/clock/qcom,kaanapali-gxclkctl.h> @@ -61,7
>> +62,15 @@ MODULE_DEVICE_TABLE(of,
>> gx_clkctl_kaanapali_match_table);
>>
>> static int gx_clkctl_kaanapali_probe(struct platform_device *pdev)
>> { - return qcom_cc_probe(pdev, &gx_clkctl_kaanapali_desc); + int
>> ret; + + ret = qcom_cc_probe(pdev, &gx_clkctl_kaanapali_desc); +
>> if (ret) + return ret; + + pm_runtime_disable(&pdev->dev);
> My understanding is that this works because we have more than one
> domain associated with the nod (so the generic code that would
> otherwise enable a single one so long as the device is resumed
> doesn't apply) and your previous patch ensures that after probe, the
> clock controller is being put to sleep, right before
> pm_runtime_disable() executes.
Konrad, by disabling runtime_pm will ensure that when GMU is moved to
runtime active the clock controller is not runtime resumed, which would
prevent the votes on the rails as per IFPC expectations.
--
Thanks,
Taniya Das
next prev parent reply other threads:[~2026-04-08 7:26 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-07 9:30 [PATCH 0/6] qcom: Refactor GPU GX GDSC handling and IFPC behavior on A8x GPUs Taniya Das
2026-04-07 9:30 ` [PATCH 1/6] clk: qcom: gdsc: Add custom disable callback for GX GDSC Taniya Das
2026-04-07 10:56 ` Konrad Dybcio
2026-04-08 7:26 ` Taniya Das
2026-04-07 9:30 ` [PATCH 2/6] clk: qcom: gxclkctl: Use custom disable callback for gx_gdsc Taniya Das
2026-04-07 10:56 ` Konrad Dybcio
2026-04-07 9:30 ` [PATCH 3/6] clk: qcom: common: ensure runtime PM suspend completes on probe Taniya Das
2026-04-07 10:58 ` Konrad Dybcio
2026-04-08 7:26 ` Taniya Das
2026-04-07 9:30 ` [PATCH 4/6] clk: qcom: gxclkctl: Remove GX/GMxC rail votes to align with IFPC Taniya Das
2026-04-07 11:29 ` Konrad Dybcio
2026-04-08 7:25 ` Taniya Das [this message]
2026-04-07 9:30 ` [PATCH 5/6] drm/msm/a8xx: Make a8xx_recover IFPC safe Taniya Das
2026-04-07 11:00 ` Konrad Dybcio
2026-04-07 9:30 ` [PATCH 6/6] drm/msm/a6xx: Limit GXPD votes to recovery in A8x Taniya Das
2026-04-07 11:01 ` Konrad Dybcio
2026-04-07 19:16 ` Akhil P Oommen
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