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charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTAyMDA3NiBTYWx0ZWRfX1Jh0L72t+9LR HE6nvUAyfEWn7YV1gC8Q7yPQV4jU02rxdCdHLtzftCdQ/8M2gS7Hg3qjpVSTT9Cd7ZkK8Z8R+yt vOszKAZp35M/uN08B4aCPHwCXYxsfOMwAtydUSF4RfoC9NAR5myrHJTA3OmJpnBCv7ydyrYtjMI 830M/1HHPFvNCzEGI+lHaYdKsUvarqz1aJK/o/sFW6Ow5zMYSw3iIS7GwlvxfYu9I/VVKmaaYXf Ffww0Wpp8xOdWYqJDK8nD9s63MExKHx8PS+k1vTjOemZHtMfuccoAT0CtWPI4VeETN6jJ6a4eZF nQ9GFFNtuvsTIRkfGtvJBBOpgSu3YMIByW3T/fpJ6W+d6ei8PCEzCq5r/IyPk6if3RatezkKRn/ pdMMnIP7vSOYGJTSO0JWsvmG5a8UK2IfsXdhklz56kSLHg//rMxRtFg8QKYnY0SyjLB+9Gd9Elk 8gcLfKSvbYMEr7Y9fNg== X-Proofpoint-GUID: uxM0-yFoGCjpeVl4zUM23KMkhDmHhfDJ X-Authority-Analysis: v=2.4 cv=D8N37PRj c=1 sm=1 tr=0 ts=6a97e1d6 cx=c_pps a=EVbN6Ke/fEF3bsl7X48z0g==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=VdqzKS8jKosA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=rJkE3RaqiGZ5pbrm-msn:22 a=i7MDaAbus5dcvw8aKywA:9 a=QEXdDO2ut3YA:10 a=a_PwQJl-kcHnX1M80qC6:22 X-Proofpoint-ORIG-GUID: uxM0-yFoGCjpeVl4zUM23KMkhDmHhfDJ X-Proofpoint-Spam-Info: AW1haW4tMjYwOTAyMDA3NiBTYWx0ZWRfX6azbnw/zRmjP TRxZ1VIg2tQXt2rIpH4tjilgKsIRlnGz5I5H6n2uIU6uXl0xwBlvTadajWy3SmzDqAUm0wKH1CE tWz+wbsDNN08a3pTpCenR7zZ0oyL4J4= 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=2026-09-02_01,2026-09-01_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 lowpriorityscore=0 spamscore=0 phishscore=0 adultscore=0 malwarescore=0 clxscore=1015 impostorscore=0 priorityscore=1501 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2609020076 On 9/1/26 10:47 AM, Xilin Wu wrote: > The TC9563 PCI power-control driver powers off external downstream ports > whose device tree nodes have status = "disabled". > > On the Radxa Dragon Q8B, reading the Vendor ID from one of these > powered-off port functions during PCI enumeration raises an Arm SError > instead of returning an all-ones PCI error response. This prevents the > board from completing boot. I agree with the premise of the patch, but I'd like to understand why that happens - do you have any details? Konrad