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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-64b90414649sm14350874a12.0.2025.12.23.09.50.42 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 23 Dec 2025 09:50:43 -0800 (PST) Message-ID: Date: Tue, 23 Dec 2025 18:50:41 +0100 Precedence: bulk X-Mailing-List: linux-watchdog@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 0/2] Add support for Gunyah Watchdog To: Alexander Koskovich , Pavan Kondeti , Bjorn Andersson Cc: Neil Armstrong , hrishabh.rajput@oss.qualcomm.com, Konrad Dybcio , Wim Van Sebroeck , Guenter Roeck , Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-arm-msm@vger.kernel.org, linux-watchdog@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: Content-Language: en-US From: Konrad Dybcio In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMjIzMDE0OCBTYWx0ZWRfX7Qwy/+z4AK+/ yRn5hxqSn5OL9UcTnnbY73azPd0Ekwt6wG9KrxbM0lP38XmS1SotDQccKgNFtHhimInwDPOk/ms F4JnGuZoUoJJDwIkKkLsI3HOt6uH/Qko4+UxK2FFZVL5Bcpyw8TYMGCTvWtv47yTKbUO0Mz/DRv 8vxcAEWA1M6w3uIa9tYAbK5Mc1JQqkyd/n19NFp5N+/AtSR42Lhr2V6ow6dSpLPLlJEUt0DcJFh 4LCW/90BXCg+2sgsE+GGPtrkQna3nnG7+TVu02tqfEbHjMq64bPhBEQd90CenTGLINBKoZSsldL HC3Yg26ZCqTReanN7uuvUG18++rirZl6jbZSXPLagpdyE8L+B62SwaowUsROH+8cMe7j9T+ksem nJCcgG4FM6sKdoQq5Yu07X4jX9IweR3WbhBwmdJ+P6h4RN/ePAIUuf4Y8PNaGMNN2/LZ2b4FZyf ioNo8o/3ynP+TWNB+Og== X-Authority-Analysis: v=2.4 cv=IvATsb/g c=1 sm=1 tr=0 ts=694ad675 cx=c_pps a=qKBjSQ1v91RyAK45QCPf5w==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=wP3pNCr1ah4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=qC_FGOx9AAAA:8 a=lsCYmBuC6W_TzA65AAgA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=NFOGd7dJGGMPyQGDc5-O:22 a=fsdK_YakeE02zTmptMdW:22 X-Proofpoint-GUID: LSsqDKLdH22JFtkEh7C_I3CQWctbVW_W X-Proofpoint-ORIG-GUID: LSsqDKLdH22JFtkEh7C_I3CQWctbVW_W X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-12-23_04,2025-12-22_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 clxscore=1015 bulkscore=0 malwarescore=0 impostorscore=0 suspectscore=0 priorityscore=1501 lowpriorityscore=0 spamscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2512120000 definitions=main-2512230148 On 12/22/25 8:02 PM, Alexander Koskovich wrote: > > On 9/4/25 1:05 PM, Pavan Kondeti wrote: >> Thanks for asking this question. I believe the overlay part needs some >> discussion here. >> >> I have tried this series on 8550 MTP. The overlay failed, so watchdog >> device did not probe. same is the case with 8750 too. It works only >> after applying this patch. I will test and report my observation on 8650 >> later. > > Hi Pavan, was linked this thread after seeing what I think to be the > same issue on another platform, > but issue is a bit more serious here since bootloader fails to find a > DTB at all, not just overlay fails. > When the "arch_timer" label is missing from the base DTB on Milos, > ufdt_apply_overlay in bootloader > will fail and it looks like the DTB memory gets corrupted. If you are > booting without a dtbo image, > then you don't see the issue. Couple logs from bootloader when it happens: > >     ApplyOverlay: ufdt apply overlay failed FWIW this comes from ABL, which is open source https://git.codelinaro.org/clo/la/abl/tianocore/edk2/ You can probably deduce the correct tag from the boot logs Konrad