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charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDE2MDA0MiBTYWx0ZWRfX8I92dVf+Mw2T /NDKOn1x3+5Gzldit7o5J4ZXxPxgMZTAjmU85Kv8eqZ39uSyFQ1D+0FFNZrGm8a6xMy/ChYmfuL cKvTsea6bGPkAoeCLbPTdsNZO0EDOUkp+BRJEBYwoI/KL3mCYnhu75EQZs+9pJNs6MJCf+QcyXk w137wbVP4Gw6Bfp50B0cHotSHngH2VGUJkZQuXKCPYVRFo1fl9IQ37NHyfAPdvYGqEd4nSqI07v fSdsrB+PGHufHGLficpCnH/Qs7eDC2TCLaeLB/CP54vh8+YRY8uouFKyOHqggkGLGsdnF5lE7cM O9pHXWGzzrfNdNPJwAdTo2ireo6A0wgMFQOWj7KBu0DUbrfDai+dYS86nqxS5WdkVkGOB+8E84v tVN1zJnt7BMSXrzbJSKBzOC+FJTkbfQa7EX/00vwSjsexCWnqTp2mUS5J7176NMxIVT2Z/7gmW7 B0dyT/oEFtpC2NALiQw== X-Proofpoint-Spam-Info: AW1haW4tMjYxMDE2MDA0MiBTYWx0ZWRfX4mM+H+r0Xmht 2kbrmxhA8m/IW4qP7EmFFu1xXkuWkO3T5aHUSlk4l3xLw+T/2/AvNanZpQBkK1zIgXnKbpoG9Om /O9WN6tTcC2T2uCdQXQadIsoW2Aso/w= X-Authority-Analysis: v=2.4 cv=PqsG/AM3 c=1 sm=1 tr=0 ts=6ad1fe5f cx=c_pps a=wEM5vcRIz55oU/E2lInRtA==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yx91gb_oNiZeI1HMLzn7:22 a=LWmFl1y4wXh1j7GygewA:9 a=QEXdDO2ut3YA:10 a=OIgjcC2v60KrkQgK7BGD:22 X-Proofpoint-ORIG-GUID: Dq-Gg6xeDZBd10S0CIeSzKcBUHVUAwi2 X-Proofpoint-GUID: Dq-Gg6xeDZBd10S0CIeSzKcBUHVUAwi2 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=2026-10-16_01,2026-10-14_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 bulkscore=0 priorityscore=1501 lowpriorityscore=0 impostorscore=0 phishscore=0 clxscore=1015 malwarescore=0 suspectscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610080000 definitions=main-2610160042 On 9/21/26 9:32 AM, Royyan Zahir wrote: > With qcom_scm.download_mode=1 an IQ-9075 never completes a warm reboot. > XBL stops in download mode and only a cold power cycle recovers the board: > > B - 857233 - TCSR reg value 0x10 > B - 865071 - RamDump - Image Load, Start > B - 884317 - boot_dload_entry > B - 6774477 - USB DUMP failed, because USB cable disconnect > > 0x10 is FIELD_PREP(QCOM_DLOAD_MASK, QCOM_DLOAD_FULLDUMP), so the cookie > written at probe is still set when XBL reads it, even though systemd > stopped every unit in order and nothing panicked. > > Two latches have to come down and neither reliably does. > qcom_scm_shutdown() clears the cookie from .shutdown, which > device_shutdown() calls after the SCM device's own dependencies may > already be torn down, so the write can fail with nothing left to report > it to. Ouch. Indeed there's no devlink or similar between the SCM producer and its consumers. It just so happened not to surface any issues for N years.. > SDI is disabled only from probe, and only when download_mode was> zero at that moment, so a board booted with download mode on keeps > watchdog debug armed for the life of the boot. Writing "off" to the > module parameter later clears the cookie but never reaches SDI, which is > why that runtime workaround does not restore warm reboot. +Mukesh are dump_mode and SDI supposed to be disabled together (i.e. do we need if (off) { disable_sdi() } in the .store path), or are they orthogonal? Konrad