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Wed, 08 Apr 2026 00:26:08 -0700 (PDT) X-Received: by 2002:a17:903:2c05:b0:2ae:7ed6:46e3 with SMTP id d9443c01a7336-2b2818016dbmr223332875ad.27.1775633168219; Wed, 08 Apr 2026 00:26:08 -0700 (PDT) Received: from [10.217.217.198] ([202.46.22.19]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2b2749a4791sm192337875ad.66.2026.04.08.00.26.00 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 08 Apr 2026 00:26:07 -0700 (PDT) Message-ID: Date: Wed, 8 Apr 2026 12:55:59 +0530 Precedence: bulk X-Mailing-List: linux-clk@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 4/6] clk: qcom: gxclkctl: Remove GX/GMxC rail votes to align with IFPC To: Konrad Dybcio , Bjorn Andersson , Michael Turquette , Stephen Boyd , Abel Vesa , Rob Clark , Sean Paul , Konrad Dybcio , Akhil P Oommen , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Marijn Suijten , David Airlie , Simona Vetter Cc: Ajit Pandey , Imran Shaik , Jagadeesh Kona , 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 References: <20260407-gfx-clk-fixes-v1-0-4bb5583a5054@oss.qualcomm.com> <20260407-gfx-clk-fixes-v1-4-4bb5583a5054@oss.qualcomm.com> <73196147-0133-4646-927d-dbe93c254286@oss.qualcomm.com> Content-Language: en-US From: Taniya Das In-Reply-To: <73196147-0133-4646-927d-dbe93c254286@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNDA4MDA2NiBTYWx0ZWRfX+2VnU/uioWXA LCWFQmbpmAHwATE8sgWT94S5LjfnOKksR7mJU1QOPvuzel+UcEluDmfiGEhzGWu9n7ALMboTeRu 4n6cRFamVxMBHHTR5CWOob/XkTXo9OuTZ5E+rylH8CucIs1crSdl1YWxF0wygvz7mtu4YXyWQI0 3teTvwlXsyvoSBgmjb5iwztnC+Tjm2Lm/NXjch8yOVxAYRZrNe8f9+q0Jsr88mr7qRo7ZtKzhQb YWl/Qzg6euY0bVSMRbjdQQ1fE2ymUwQyLeCM0g2HgpVSbBtv2rRblxAS0jU2NKaPcUEIzlJ8ulS R0MNBiQEwOB/YxgFaaiU6LDehChgS3x44x9jDTi4wtl4Y67+9zW18NDHhyCPOFHXmaoY83IyKTj ka1A4VNLnzuR1YB9wtF1Au85MM9Q2zXwQJRHr8K//ZdpydsOptYEA6jaIiMDcXEZerFojyI3FwQ HmF/xY4ChKLWm3RmZrg== X-Authority-Analysis: v=2.4 cv=FecHAp+6 c=1 sm=1 tr=0 ts=69d60311 cx=c_pps a=IZJwPbhc+fLeJZngyXXI0A==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=IkcTkHD0fZMA:10 a=A5OVakUREuEA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_glEPmIy2e8OvE2BGh3C:22 a=lwYRxUUayc8gUbovT3YA:9 a=QEXdDO2ut3YA:10 a=uG9DUKGECoFWVXl0Dc02:22 X-Proofpoint-ORIG-GUID: kWJ29iJJPjxaz9jU3y87mKiVJ_nTkJTh X-Proofpoint-GUID: kWJ29iJJPjxaz9jU3y87mKiVJ_nTkJTh X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-04-08_03,2026-04-07_05,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 phishscore=0 lowpriorityscore=0 priorityscore=1501 suspectscore=0 clxscore=1015 impostorscore=0 bulkscore=0 adultscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2604010000 definitions=main-2604080066 On 4/7/2026 4:59 PM, Konrad Dybcio wrote: >> >> #include @@ -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