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Tue, 14 Jul 2026 23:22:13 -0700 (PDT) X-Received: by 2002:a17:903:2a88:b0:2c9:d8c6:1db8 with SMTP id d9443c01a7336-2ce9f284e45mr158542975ad.28.1784096533314; Tue, 14 Jul 2026 23:22:13 -0700 (PDT) Received: from [10.217.198.242] ([202.46.22.19]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2cf08fd77dasm2386245ad.72.2026.07.14.23.22.09 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 14 Jul 2026 23:22:12 -0700 (PDT) Message-ID: <018990d8-2a6a-4725-8aee-af221057d664@oss.qualcomm.com> Date: Wed, 15 Jul 2026 11:52:07 +0530 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 7/7] arm64: dts: qcom: x1e80100: Add deepest idle state To: Bjorn Andersson Cc: Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Thomas Gleixner , Linus Walleij , Bartosz Golaszewski , linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-gpio@vger.kernel.org, Sneh Mankad References: <20260707-hamoa_pdc_v3-v4-0-dfd1f4a3ae89@oss.qualcomm.com> <20260707-hamoa_pdc_v3-v4-7-dfd1f4a3ae89@oss.qualcomm.com> Content-Language: en-US From: "Maulik Shah (mkshah)" In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Authority-Analysis: v=2.4 cv=Q63iJY2a c=1 sm=1 tr=0 ts=6a572716 cx=c_pps a=IZJwPbhc+fLeJZngyXXI0A==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=gowsoOTTUOVcmtlkKump:22 a=VwQbUJbxAAAA:8 a=pOI47-Q_PV5DkGHPJZYA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=uG9DUKGECoFWVXl0Dc02:22 X-Proofpoint-ORIG-GUID: kc1seDwRToMFK4UAmo10bVqeNn_SF786 X-Proofpoint-Spam-Info: AW1haW4tMjYwNzE1MDA1NyBTYWx0ZWRfX7EBfGdbEMRRP Gv/URoqOBcRxjF+sMCaH1LA3ixzY+q6FptBRBegDzX7X0FKYYbFuZ5xAWa8Ja08zLOPQrEIwVGU Vajp931OsyDAc71UAYSg2SF6AUO6zIY= X-Proofpoint-GUID: kc1seDwRToMFK4UAmo10bVqeNn_SF786 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzE1MDA1NyBTYWx0ZWRfX6X2kHutKe7QB TBAi8rTOX21qCtnf6HDsplRDXDj5xpOocRe1rY4pdbDRHgqZJuJNo5Rxi2ASrZVYLItPY9+ZAN9 E/lumwJFIqlLAeFKa6l8rnsYhaFXaXpMelJNuy4AW+uKIbnKDFP3o9ZqXZhfXjvl9IyMYMpsYX6 n0RBEGuBrU+ZaST/1PVfrU0MUe/P8TedvG2TcBxmTOv4a9YwzxiLsp2UZljg+E2HE9YQB6NxVzP ft9oTQvJSFcKnKz9jJGXnOpeULu17FUFf4/7gXN+MQV1+oEN/2gsjajvdv2nbKccPv8pqrQJawt ZHCColW/gP5HWsTl7VvCQpPXWFRk0OuVfBB4SM1ybBX9IRwyRT6hNIgwT4hIEG+Xfq+DsP1F5kZ dCjUynYkTg3rw2Vicx4Mi80v0MregAFXlMXuUMLjXFCPmXcHwG5x8pyOfzfHC0+8WOkNZXAMHwv zuA8G+p0vnJPOnIH6Aw== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-15_02,2026-07-14_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 lowpriorityscore=0 adultscore=0 suspectscore=0 bulkscore=0 phishscore=0 impostorscore=0 malwarescore=0 priorityscore=1501 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607150057 On 7/11/2026 11:37 PM, Bjorn Andersson wrote: > On Tue, Jul 07, 2026 at 02:51:39PM +0530, Maulik Shah wrote: >> Add deepest idle state as GPIO IRQs can work as wakeup capable interrupts >> in deepest idle state. >> > > There's a lot of implied background in this sentence. When you write > commit messages, please intend for them to be read by someone who don't > have your background insight to the problem. In fact, if someone asks > you about this sentence in 5 years would you be able to retell exactly > why we ended up with this patch? > > Please rewrite this to start with a problem description, then describe > the user-visible change. Agree. Added in v5. > > https://docs.kernel.org/process/submitting-patches.html#describe-your-changes > >> Update entry/exit-latency-us to follow DSDT for cluster_cl5 idle state. > > I don't have strong opinions about bundling this part of the change - it > could be argued that it's a separate change, but I won't force it. > > But as written I think any reasonable language parser would consider > this to be related to the addition of the deepest idle state, not "While > we're adding the new state, also adjust the cluster_cl5 latencies with > values from production configuration." Added in v5 commit message on why its bundled in same change, "The newly added domain_ss3 state has entry/exit latencies of 2500 us. The shallower cluster_cl5 state had entry/exit latencies of 2200/4000 us which are higher than the deeper state — an inconsistency that would confuse the idle governor. Correct cluster_cl5 latencies to 2000 us each to match production configuration values". Thanks, Maulik