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[129.46.96.20]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2ed8174bdfdsm12236235ad.73.2026.11.09.06.58.53 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 09 Nov 2026 06:58:54 -0800 (PST) Message-ID: Date: Mon, 9 Nov 2026 07:58:52 -0700 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] bus: mhi: host: pci_generic: Add per-device ACPI reset To: xing1989093@163.com, Manivannan Sadhasivam Cc: mhi@lists.linux.dev, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org References: <20261109110352.1621-1-xing1989093@163.com> Content-Language: en-US From: Jeff Hugo In-Reply-To: <20261109110352.1621-1-xing1989093@163.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: 6zQ5A9-qTkvAQSfcQxxzJ3SBALiUoGkx X-Proofpoint-ORIG-GUID: 6zQ5A9-qTkvAQSfcQxxzJ3SBALiUoGkx X-Authority-Analysis: v=2.4 cv=au0nmiZV c=1 sm=1 tr=0 ts=6af1dfb0 cx=c_pps a=JL+w9abYAAE89/QcEU+0QA==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=IkcTkHD0fZMA:10 a=zJRp6_cAMcgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=YMgV9FUhrdKAYTUUvYB2:22 a=Byx-y9mGAAAA:8 a=pAXL01g2s4yJVYebQMEA:9 a=QEXdDO2ut3YA:10 a=324X-CrmTo6CU4MGRt3R:22 X-Proofpoint-Spam-Info: AW1haW4tMjYxMTA5MDA1OSBTYWx0ZWRfX7HkArG08Qh/D ihlGYkD7c5MIoFQZf3kdJhoQHxfgJbPDFF1TLYJHILXBpsKpQk4pvyDkfRTMWlZwy9gc8s3Tz3j kyD737wMCrnVsQHfwekjLf0PSeI/1OY= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMTA5MDA1OSBTYWx0ZWRfX2xhVlI8Ycr/e ezm3JCZeWzQ3mYlAQxscTip8IKRF/FBoeg+5jKp8b7H7q4GkpdTnD7gBV/nqE8bpnDOdV0GZjD6 WqUSucXA8qk4bVlwTqfdGdbamIqgRdBCTCy1yDjiLaxZWDrsQ16fTT8tPIW91fCPnyhZ6Bp9FnH amCiF/at/64ioAtV7irJ1VDriMkE94PWUagGE55jERPkjw2YN8/TOeVgPZSdd/oIy4IyJ8GcY5T SzpH1ek1hEP5jFjoQtltHbcytJ4xPjtpKzf6duhOTuhLvAwyfLXgAU/xzU4c7lbnucRfZMOCRtj C18XUtoSgvGGfK0zizQRBhDkHvnmWIM/jI3QA8LokU6v9AqrUfvQ+RIYV/BzgIY1vSR7hwdLrIv H69hlS9eS+GjYhCuJNV/OZuIbrx83m7tchUyP30V3C+82cS6PP5AKCYsXLrzfapn4Pb+aqB2Z75 jQQe0HxoWR+SA6RqYUA== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.138,FMLib:17.12.100.49 definitions=2026-11-09_05,2026-11-06_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 adultscore=0 suspectscore=0 bulkscore=0 impostorscore=0 phishscore=0 clxscore=1015 malwarescore=0 priorityscore=1501 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2611040001 definitions=main-2611090059 On 11/9/2026 4:03 AM, xing1989093@163.com wrote: > From: Hongxing Xu > > Writing the MHI SOC_RESET register is a device internal soft reset: it > only asks the modem to restart itself, so it is useless once the device > has stopped servicing MHI. Interesting. Where is this true? Every MHI implementation I've looked at has the SOC_RESET register implemented as a direct hardware signal to the PMIC to reset the SOC. No firmware involvement. -Jeff