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Tue, 13 Oct 2026 03:40:10 -0700 (PDT) X-Received: by 2002:a05:620a:269a:b0:93a:14c:329c with SMTP id af79cd13be357-93ebd0c2693mr2289141485a.1.1791888009168; Tue, 13 Oct 2026 03:40:09 -0700 (PDT) Received: from [192.168.226.26] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c31b8c4b407sm522786766b.0.2026.10.13.03.40.06 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 13 Oct 2026 03:40:08 -0700 (PDT) Message-ID: Date: Tue, 13 Oct 2026 12:40:05 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 2/6] clk: qcom: negcc-nord: keep GPU2 CFG clock enabled via critical CBCR To: Dmitry Baryshkov , Shawn Guo Cc: Taniya Das , Bjorn Andersson , Michael Turquette , Stephen Boyd , Brian Masney , Bartosz Golaszewski , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Neil Armstrong , Konrad Dybcio , Ajit Pandey , Imran Shaik , Jagadeesh Kona , linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Alexandre Mergnat References: <20260724-nords_mm_v1-v3-0-32b45232217f@oss.qualcomm.com> <20260724-nords_mm_v1-v3-2-32b45232217f@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDEzMDA0MiBTYWx0ZWRfX88mpHEJmxV+b 454GYlPtB1OprK8pzOdu2+439vGBJS6ZcGMs4Tc1bzVml1dUoBzk/yqDlEdfgmorfLygzqmyQdI oFuR41av8aS1xpc7Atv+TKvJqIus9TDN8ECy8TkxKdew20zBjJnCvIGTKdOzLV/jz8e3zpZnTEb z06itVk94LoMWXi8l1YZztL2siyGsz3FecEcf8kK7BEnOj/GFxwuZBO7keRXzfMMYNiu7r7q3Rg 9VLsumoFbB+vdHoN8jxIBUXRC/ZxG3oc29LSwduxgJtfqwXm7dcRMqZAZnSoa3mZyGghKazzz+I ET6Tfse+NwP9CZ+Z0UJ5VGekhgsnlGWeqXfkGKsBBbJqIiNIYV3kJKpuRBlvuJHiR3MCxXo3PF8 3WEU+psk73aQNUUIBdiHixUJaZy2OfzNh2eFVVd8JrVQoU8BuM59xVtVavUYRzmGwDp/f8hWFSV ZHAQASQc+1B92JIvwjg== X-Proofpoint-Spam-Info: AW1haW4tMjYxMDEzMDA0MiBTYWx0ZWRfXzs7DnrcrPrE7 UBfv5bov99FC/cSBomrn39xGsYFXxAac01CQNTxOF+gSxjMzOs0M0BwYhTUByp5WcPFYAWuXZsr 2z5IEt8CoQ1pFQLJufKS7mtPAUn1ef0= X-Proofpoint-ORIG-GUID: Z3gZ7XEQ6h-CcuoKuG84VLce3k_0jEmn X-Authority-Analysis: v=2.4 cv=EP+TQFZC c=1 sm=1 tr=0 ts=6ace0a8a cx=c_pps a=50t2pK5VMbmlHzFWWp8p/g==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=rJkE3RaqiGZ5pbrm-msn:22 a=GumQ9EM2AAAA:8 a=2Dd11suIDkSi0JYY73kA:9 a=QEXdDO2ut3YA:10 a=IoWCM6iH3mJn3m4BftBB:22 X-Proofpoint-GUID: Z3gZ7XEQ6h-CcuoKuG84VLce3k_0jEmn X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-10-13_01,2026-10-09_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 suspectscore=0 phishscore=0 clxscore=1015 spamscore=0 malwarescore=0 priorityscore=1501 bulkscore=0 adultscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610080000 definitions=main-2610130042 On 10/13/26 12:36 PM, Dmitry Baryshkov wrote: > On Tue, Oct 13, 2026 at 05:54:44PM +0800, Shawn Guo wrote: >> On Tue, Oct 13, 2026 at 11:08:56AM +0800, Shawn Guo wrote: >>> On Fri, Jul 24, 2026 at 04:25:06PM +0530, Taniya Das wrote: >>>> The GPU2 CFG clock must remain enabled for correct operation and >>>> should not be exposed as a controllable clk_branch. >>> >>> Hi Taniya, >>> >>> Could you share a bit more information why this is the case? I do not >>> seem to get any problem when testing without this change. >> >> Never mind! I can see the issue it fixes now. > > Would be nice to capture it in the commit message. https://imgs.xkcd.com/comics/wisdom_of_the_ancients.png Konrad