include/ufs/ufs_quirks.h

1 /* SPDX-License-Identifier: GPL-2.0-only */
3  * Copyright (c) 2014-2016, The Linux Foundation. All rights reserved.
22  * ufs_dev_quirk - ufs device quirk info
42  * - As soon as SW sees the DL NAC error, it should schedule the error handler
43  * - Error handler would sleep for 50ms to see if there are any fatal errors
45  *    - If there are fatal errors then SW does normal error recovery.
46  *    - If there are no fatal errors then SW sends the NOP command to device
48  *        - If NOP command times out, SW does normal error recovery
49  *        - If NOP command succeed, skip the error handling.
59  * 600us which may not be enough for reliable hibern8 exit hardware sequence
68  * (atleast for 500us) from UFS rails (especially from VCCQ rail).
69  * To avoid this situation, add 2ms delay before putting these UFS
81  * The max. value PA_SaveConfigTime is 250 (10us) but this is not enough for
85  * software delay will not help on this case so we need to increase
86  * PA_SaveConfigTime to >32us as per vendor recommendation.
97  * Some pre-3.1 UFS devices can support extended features by upgrading
104  * Some UFS devices require delay after VCC power rail is turned-off.
105  * Enable this quirk to introduce 5ms delays after VCC power-off during