Hi ,
I am working on Power Management on an i.MX8 board with Linux running on it. It has Wi-Fi BT Combo card interface with Wi-Fi uses SDIO to interface with the host and BT has UART interface. The whole system is put into suspend mode using the echo mem > /sys/power/state command . This happens smoothly. Serial is the wakeup source and the system is resumed by pressing any key. The system is resuming back but the SDIO is facing some reset related problem during resume. When I digged in a bit the SDIO data lines and CMD lines are being reset and the operation is not getting completed and a timeout happens with the below error messages continuously appearing in a infinite while loop
Code:
22.040606] cache: parent cpu1 should not be sleeping
[ 22.062441] CPU1 is up
[ 22.174396] mmc1: Reset 0x6 never completed.
[ 22.178679] mmc1: sdhci: ============ SDHCI REGISTER DUMP ===========
[ 22.185137] mmc1: sdhci: Sys addr: 0x00000000 | Version: 0x00000002
[ 22.191588] mmc1: sdhci: Blk size: 0x00000100 | Blk cnt: 0x00000001
[ 22.198043] mmc1: sdhci: Argument: 0x13000100 | Trn mode: 0x00000013
[ 22.204500] mmc1: sdhci: Present: 0x01fd8008 | Host ctl: 0x00000012
[ 22.210954] mmc1: sdhci: Power: 0x00000002 | Blk gap: 0x00000080
[ 22.217408] mmc1: sdhci: Wake-up: 0x00000008 | Clock: 0x0000003f
[ 22.223862] mmc1: sdhci: Timeout: 0x0000008f | Int stat: 0x00000000
[ 22.230319] mmc1: sdhci: Int enab: 0x00000000 | Sig enab: 0x00000000
[ 22.236773] mmc1: sdhci: AC12 err: 0x00000000 | Slot int: 0x00000502
[ 22.243229] mmc1: sdhci: Caps: 0x07eb0000 | Caps_1: 0x8000b407
[ 22.249683] mmc1: sdhci: Cmd: 0x0000353a | Max curr: 0x00ffffff
[ 22.256142] mmc1: sdhci: Resp[0]: 0x00002000 | Resp[1]: 0x00000000
[ 22.262591] mmc1: sdhci: Resp[2]: 0x00000000 | Resp[3]: 0x00000000
[ 22.269045] mmc1: sdhci: Host ctl2: 0x00000000
[ 22.273504] mmc1: sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x00000000
[ 22.279955] mmc1: sdhci: ============================================
[ 22.678507] g_ether gadget: high-speed config #1: CDC Ethernet (ECM)
[ 32.392688] mmc1: Timeout waiting for hardware cmd interrupt.
[ 32.398445] mmc1: sdhci: ============ SDHCI REGISTER DUMP ===========
[ 32.404890] mmc1: sdhci: Sys addr: 0x00000000 | Version: 0x00000002
[ 32.411336] mmc1: sdhci: Blk size: 0x00000100 | Blk cnt: 0x00000001
[ 32.417782] mmc1: sdhci: Argument: 0x00000c00 | Trn mode: 0x00000013
[ 32.424228] mmc1: sdhci: Present: 0x01fd8008 | Host ctl: 0x00000013
[ 32.430665] mmc1: sdhci: Power: 0x00000002 | Blk gap: 0x00000080
[ 32.437102] mmc1: sdhci: Wake-up: 0x00000008 | Clock: 0x0000003f
[ 32.443540] mmc1: sdhci: Timeout: 0x0000008f | Int stat: 0x00000000
[ 32.449987] mmc1: sdhci: Int enab: 0x007f1003 | Sig enab: 0x007f1003
[ 32.456432] mmc1: sdhci: AC12 err: 0x00000000 | Slot int: 0x00000502
[ 32.462870] mmc1: sdhci: Caps: 0x07eb0000 | Caps_1: 0x8000b407
[ 32.469316] mmc1: sdhci: Cmd: 0x0000341a | Max curr: 0x00ffffff
[ 32.475763] mmc1: sdhci: Resp[0]: 0x00002000 | Resp[1]: 0x00000000
[ 32.482208] mmc1: sdhci: Resp[2]: 0x00000000 | Resp[3]: 0x00000000
[ 32.488645] mmc1: sdhci: Host ctl2: 0x00000000
[ 32.493086] mmc1: sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x00000000
[ 32.499530] mmc1: sdhci: ============================================
[ 32.605984] mmc1: Reset 0x2 never completed.
[ 32.610253] mmc1: sdhci: ============ SDHCI REGISTER DUMP ===========
[ 32.616690] mmc1: sdhci: Sys addr: 0x00000000 | Version: 0x00000002
[ 32.623128] mmc1: sdhci: Blk size: 0x00000100 | Blk cnt: 0x00000001
[ 32.629566] mmc1: sdhci: Argument: 0x00000c00 | Trn mode: 0x00000013
[ 32.636003] mmc1: sdhci: Present: 0x01fd8008 | Host ctl: 0x00000013
[ 32.642440] mmc1: sdhci: Power: 0x00000002 | Blk gap: 0x00000080
[ 32.648878] mmc1: sdhci: Wake-up: 0x00000008 | Clock: 0x0000003f
[ 32.655315] mmc1: sdhci: Timeout: 0x0000008f | Int stat: 0x00000000
[ 32.661753] mmc1: sdhci: Int enab: 0x007f1003 | Sig enab: 0x007f1003
[ 32.668190] mmc1: sdhci: AC12 err: 0x00000000 | Slot int: 0x00000502
[ 32.674628] mmc1: sdhci: Caps: 0x07eb0000 | Caps_1: 0x8000b407
[ 32.681074] mmc1: sdhci: Cmd: 0x0000341a | Max curr: 0x00ffffff
[ 32.687511] mmc1: sdhci: Resp[0]: 0x00002000 | Resp[1]: 0x00000000
[ 32.693948] mmc1: sdhci: Resp[2]: 0x00000000 | Resp[3]: 0x00000000
[ 32.700385] mmc1: sdhci: Host ctl2: 0x00000000
[ 32.704825] mmc1: sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x00000000
[ 32.711261] mmc1: sdhci: ============================================
[ 32.817706] mmc1: Reset 0x4 never completed.
[ 32.821975] mmc1: sdhci: ============ SDHCI REGISTER DUMP ===========
[ 32.828413] mmc1: sdhci: Sys addr: 0x00000000 | Version: 0x00000002
[ 32.834851] mmc1: sdhci: Blk size: 0x00000100 | Blk cnt: 0x00000001
[ 32.841289] mmc1: sdhci: Argument: 0x00000c00 | Trn mode: 0x00000013
[ 32.847726] mmc1: sdhci: Present: 0x01fd8008 | Host ctl: 0x00000013
[ 32.854172] mmc1: sdhci: Power: 0x00000002 | Blk gap: 0x00000080
[ 32.860609] mmc1: sdhci: Wake-up: 0x00000008 | Clock: 0x0000003f
[ 32.867047] mmc1: sdhci: Timeout: 0x0000008f | Int stat: 0x00000000
[ 32.873485] mmc1: sdhci: Int enab: 0x007f1003 | Sig enab: 0x007f1003
[ 32.879922] mmc1: sdhci: AC12 err: 0x00000000 | Slot int: 0x00000502
[ 32.886360] mmc1: sdhci: Caps: 0x07eb0000 | Caps_1: 0x8000b407
[ 32.892797] mmc1: sdhci: Cmd: 0x0000341a | Max curr: 0x00ffffff
[ 32.899234] mmc1: sdhci: Resp[0]: 0x00002000 | Resp[1]: 0x00000000
[ 32.905671] mmc1: sdhci: Resp[2]: 0x00000000 | Resp[3]: 0x00000000
[ 32.912108] mmc1: sdhci: Host ctl2: 0x00000000
[ 32.916548] mmc1: sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x00000000
[ 32.922984] mmc1: sdhci: ============================================
[ 43.144683] mmc1: Timeout waiting for hardware cmd interrupt.
[ 43.150433] mmc1: sdhci: ============ SDHCI REGISTER DUMP ===========
[ 43.156879] mmc1: sdhci: Sys addr: 0x00000000 | Version: 0x00000002
[ 43.163325] mmc1: sdhci: Blk size: 0x00000100 | Blk cnt: 0x00000001
[ 43.169762] mmc1: sdhci: Argument: 0x80000c08 | Trn mode: 0x00000013
[ 43.176208] mmc1: sdhci: Present: 0x01fd8009 | Host ctl: 0x00000013
[ 43.182645] mmc1: sdhci: Power: 0x00000002 | Blk gap: 0x00000080
[ 43.189083] mmc1: sdhci: Wake-up: 0x00000008 | Clock: 0x0000003f
[ 43.195521] mmc1: sdhci: Timeout: 0x0000008f | Int stat: 0x00000000
[ 43.201967] mmc1: sdhci: Int enab: 0x007f1003 | Sig enab: 0x007f1003
[ 43.208413] mmc1: sdhci: AC12 err: 0x00000000 | Slot int: 0x00000502
[ 43.214851] mmc1: sdhci: Caps: 0x07eb0000 | Caps_1: 0x8000b407
[ 43.221296] mmc1: sdhci: Cmd: 0x0000341a | Max curr: 0x00ffffff
[ 43.227734] mmc1: sdhci: Resp[0]: 0x00002000 | Resp[1]: 0x00000000
[ 43.234171] mmc1: sdhci: Resp[2]: 0x00000000 | Resp[3]: 0x00000000
[ 43.240608] mmc1: sdhci: Host ctl2: 0x00000000
[ 43.245048] mmc1: sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x00000000
[ 43.251492] mmc1: sdhci: ============================================
[ 43.357946] mmc1: Reset 0x2 never completed.
[ 43.362215] mmc1: sdhci: ============ SDHCI REGISTER DUMP ===========
[ 43.368653] mmc1: sdhci: Sys addr: 0x00000000 | Version: 0x00000002
[ 43.375091] mmc1: sdhci: Blk size: 0x00000100 | Blk cnt: 0x00000001
[ 43.381528] mmc1: sdhci: Argument: 0x80000c08 | Trn mode: 0x00000013
[ 43.387966] mmc1: sdhci: Present: 0x01fd8008 | Host ctl: 0x00000013
[ 43.394403] mmc1: sdhci: Power: 0x00000002 | Blk gap: 0x00000080
[ 43.400840] mmc1: sdhci: Wake-up: 0x00000008 | Clock: 0x0000003f
[ 43.407278] mmc1: sdhci: Timeout: 0x0000008f | Int stat: 0x00000000
[ 43.413716] mmc1: sdhci: Int enab: 0x007f1003 | Sig enab: 0x007f1003
[ 43.420153] mmc1: sdhci: AC12 err: 0x00000000 | Slot int: 0x00000502
[ 43.426591] mmc1: sdhci: Caps: 0x07eb0000 | Caps_1: 0x8000b407
[ 43.433037] mmc1: sdhci: Cmd: 0x0000341a | Max curr: 0x00ffffff
[ 43.439474] mmc1: sdhci: Resp[0]: 0x00002000 | Resp[1]: 0x00000000
[ 43.445911] mmc1: sdhci: Resp[2]: 0x00000000 | Resp[3]: 0x00000000
[ 43.452348] mmc1: sdhci: Host ctl2: 0x00000000
[ 43.456788] mmc1: sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x00000000
[ 43.463224] mmc1: sdhci: ============================================
[ 43.569668] mmc1: Reset 0x4 never completed.
[ 43.573937] mmc1: sdhci: ============ SDHCI REGISTER DUMP ===========
[ 43.580376] mmc1: sdhci: Sys addr: 0x00000000 | Version: 0x00000002
[ 43.586814] mmc1: sdhci: Blk size: 0x00000100 | Blk cnt: 0x00000001
[ 43.593251] mmc1: sdhci: Argument: 0x80000c08 | Trn mode: 0x00000013
[ 43.599689] mmc1: sdhci: Present: 0x01fd8008 | Host ctl: 0x00000013
[ 43.606126] mmc1: sdhci: Power: 0x00000002 | Blk gap: 0x00000080
[ 43.612563] mmc1: sdhci: Wake-up: 0x00000008 | Clock: 0x0000003f
[ 43.619001] mmc1: sdhci: Timeout: 0x0000008f | Int stat: 0x00000000
[ 43.625439] mmc1: sdhci: Int enab: 0x007f1003 | Sig enab: 0x007f1003
[ 43.631876] mmc1: sdhci: AC12 err: 0x00000000 | Slot int: 0x00000502
[ 43.638314] mmc1: sdhci: Caps: 0x07eb0000 | Caps_1: 0x8000b407
[ 43.644760] mmc1: sdhci: Cmd: 0x0000341a | Max curr: 0x00ffffff
[ 43.651197] mmc1: sdhci: Resp[0]: 0x00002000 | Resp[1]: 0x00000000
[ 43.657634] mmc1: sdhci: Resp[2]: 0x00000000 | Resp[3]: 0x00000000
[ 43.664071] mmc1: sdhci: Host ctl2: 0x00000000
[ 43.668511] mmc1: sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x00000000
[ 43.674947] mmc1: sdhci: ============================================
[ 53.896680] mmc1: Timeout waiting for hardware cmd interrupt.
[ 53.902429] mmc1: sdhci: ============ SDHCI REGISTER DUMP ===========
[ 53.908867] mmc1: sdhci: Sys addr: 0x00000000 | Version: 0x00000002
[ 53.915313] mmc1: sdhci: Blk size: 0x00000100 | Blk cnt: 0x00000001
[ 53.921751] mmc1: sdhci: Argument: 0x00000000 | Trn mode: 0x00000013
[ 53.928188] mmc1: sdhci: Present: 0x01fd8009 | Host ctl: 0x00000013
[ 53.934625] mmc1: sdhci: Power: 0x00000002 | Blk gap: 0x00000080
[ 53.941063] mmc1: sdhci: Wake-up: 0x00000008 | Clock: 0x0000003f
[ 53.947500] mmc1: sdhci: Timeout: 0x0000008f | Int stat: 0x00000000
[ 53.953938] mmc1: sdhci: Int enab: 0x007f1003 | Sig enab: 0x007f1003
[ 53.960375] mmc1: sdhci: AC12 err: 0x00000000 | Slot int: 0x00000502
[ 53.966813] mmc1: sdhci: Caps: 0x07eb0000 | Caps_1: 0x8000b407
[ 53.973259] mmc1: sdhci: Cmd: 0x00000000 | Max curr: 0x00ffffff
[ 53.979696] mmc1: sdhci: Resp[0]: 0x00002000 | Resp[1]: 0x00000000
[ 53.986134] mmc1: sdhci: Resp[2]: 0x00000000 | Resp[3]: 0x00000000
[ 53.992570] mmc1: sdhci: Host ctl2: 0x00000000
[ 53.997010] mmc1: sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x00000000
[ 54.003446] mmc1: sdhci: ============================================
[ 54.109897] mmc1: Reset 0x2 never completed.
[ 54.114169] mmc1: sdhci: ============ SDHCI REGISTER DUMP ===========
[ 54.120607] mmc1: sdhci: Sys addr: 0x00000000 | Version: 0x00000002
[ 54.127045] mmc1: sdhci: Blk size: 0x00000100 | Blk cnt: 0x00000001
[ 54.133482] mmc1: sdhci: Argument: 0x00000000 | Trn mode: 0x00000013
[ 54.139920] mmc1: sdhci: Present: 0x01fd8008 | Host ctl: 0x00000013
[ 54.146357] mmc1: sdhci: Power: 0x00000002 | Blk gap: 0x00000080
[ 54.152795] mmc1: sdhci: Wake-up: 0x00000008 | Clock: 0x0000003f
[ 54.159232] mmc1: sdhci: Timeout: 0x0000008f | Int stat: 0x00000000
[ 54.165669] mmc1: sdhci: Int enab: 0x007f1003 | Sig enab: 0x007f1003
[ 54.172107] mmc1: sdhci: AC12 err: 0x00000000 | Slot int: 0x00000502
[ 54.178545] mmc1: sdhci: Caps: 0x07eb0000 | Caps_1: 0x8000b407
[ 54.184991] mmc1: sdhci: Cmd: 0x00000000 | Max curr: 0x00ffffff
[ 54.191428] mmc1: sdhci: Resp[0]: 0x00002000 | Resp[1]: 0x00000000
[ 54.197874] mmc1: sdhci: Resp[2]: 0x00000000 | Resp[3]: 0x00000000
[ 54.204311] mmc1: sdhci: Host ctl2: 0x00000000
[ 54.208751] mmc1: sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x00000000
[ 54.215187] mmc1: sdhci: ============================================
[ 54.321630] mmc1: Reset 0x4 never completed.
[ 54.325900] mmc1: sdhci: ============ SDHCI REGISTER DUMP ===========
[ 54.332339] mmc1: sdhci: Sys addr: 0x00000000 | Version: 0x00000002
[ 54.338777] mmc1: sdhci: Blk size: 0x00000100 | Blk cnt: 0x00000001
[ 54.345214] mmc1: sdhci: Argument: 0x00000000 | Trn mode: 0x00000013
[ 54.351652] mmc1: sdhci: Present: 0x01fd8008 | Host ctl: 0x00000013
[ 54.358089] mmc1: sdhci: Power: 0x00000002 | Blk gap: 0x00000080
[ 54.364526] mmc1: sdhci: Wake-up: 0x00000008 | Clock: 0x0000003f
[ 54.370964] mmc1: sdhci: Timeout: 0x0000008f | Int stat: 0x00000000
[ 54.377401] mmc1: sdhci: Int enab: 0x007f1003 | Sig enab: 0x007f1003
[ 54.383839] mmc1: sdhci: AC12 err: 0x00000000 | Slot int: 0x00000502
[ 54.390277] mmc1: sdhci: Caps: 0x07eb0000 | Caps_1: 0x8000b407
[ 54.396722] mmc1: sdhci: Cmd: 0x00000000 | Max curr: 0x00ffffff
[ 54.403160] mmc1: sdhci: Resp[0]: 0x00002000 | Resp[1]: 0x00000000
[ 54.409597] mmc1: sdhci: Resp[2]: 0x00000000 | Resp[3]: 0x00000000
[ 54.416034] mmc1: sdhci: Host ctl2: 0x00000000
[ 54.420474] mmc1: sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x00000000
[ 54.426910] mmc1: sdhci: ============================================
[ 64.648681] mmc1: Timeout waiting for hardware cmd interrupt.
[ 64.654426] mmc1: sdhci: ============ SDHCI REGISTER DUMP ===========
[ 64.660864] mmc1: sdhci: Sys addr: 0x00000000 | Version: 0x00000002
[ 64.667302] mmc1: sdhci: Blk size: 0x00000100 | Blk cnt: 0x00000001
[ 64.673739] mmc1: sdhci: Argument: 0x000001aa | Trn mode: 0x00000013
[ 64.680177] mmc1: sdhci: Present: 0x01fd8009 | Host ctl: 0x00000013
[ 64.686614] mmc1: sdhci: Power: 0x00000002 | Blk gap: 0x00000080
[ 64.693052] mmc1: sdhci: Wake-up: 0x00000008 | Clock: 0x0000003f
[ 64.699489] mmc1: sdhci: Timeout: 0x0000008f | Int stat: 0x00000000
[ 64.705927] mmc1: sdhci: Int enab: 0x007f1003 | Sig enab: 0x007f1003
[ 64.712364] mmc1: sdhci: AC12 err: 0x00000000 | Slot int: 0x00000502
[ 64.718802] mmc1: sdhci: Caps: 0x07eb0000 | Caps_1: 0x8000b407
[ 64.725247] mmc1: sdhci: Cmd: 0x0000081a | Max curr: 0x00ffffff
[ 64.731685] mmc1: sdhci: Resp[0]: 0x00002000 | Resp[1]: 0x00000000
[ 64.738122] mmc1: sdhci: Resp[2]: 0x00000000 | Resp[3]: 0x00000000
[ 64.744559] mmc1: sdhci: Host ctl2: 0x00000000
[ 64.748999] mmc1: sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x00000000
[ 64.755435] mmc1: sdhci: ============================================
[ 64.861896] mmc1: Reset 0x2 never completed.
[ 64.866166] mmc1: sdhci: ============ SDHCI REGISTER DUMP ===========
[ 64.872605] mmc1: sdhci: Sys addr: 0x00000000 | Version: 0x00000002
[ 64.879042] mmc1: sdhci: Blk size: 0x00000100 | Blk cnt: 0x00000001
[ 64.885480] mmc1: sdhci: Argument: 0x000001aa | Trn mode: 0x00000013
[ 64.891926] mmc1: sdhci: Present: 0x01fd8008 | Host ctl: 0x00000013
[ 64.898363] mmc1: sdhci: Power: 0x00000002 | Blk gap: 0x00000080
[ 64.904801] mmc1: sdhci: Wake-up: 0x00000008 | Clock: 0x0000003f
[ 64.911238] mmc1: sdhci: Timeout: 0x0000008f | Int stat: 0x00000000
[ 64.917676] mmc1: sdhci: Int enab: 0x007f1003 | Sig enab: 0x007f1003
[ 64.924113] mmc1: sdhci: AC12 err: 0x00000000 | Slot int: 0x00000502
[ 64.930551] mmc1: sdhci: Caps: 0x07eb0000 | Caps_1: 0x8000b407
[ 64.936988] mmc1: sdhci: Cmd: 0x0000081a | Max curr: 0x00ffffff
[ 64.943426] mmc1: sdhci: Resp[0]: 0x00002000 | Resp[1]: 0x00000000
[ 64.949872] mmc1: sdhci: Resp[2]: 0x00000000 | Resp[3]: 0x00000000
[ 64.956308] mmc1: sdhci: Host ctl2: 0x00000000
[ 64.960748] mmc1: sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x00000000
[ 64.967184] mmc1: sdhci: ============================================
[ 65.073629] mmc1: Reset 0x4 never completed.
[ 65.077898] mmc1: sdhci: ============ SDHCI REGISTER DUMP ===========
[ 65.084336] mmc1: sdhci: Sys addr: 0x00000000 | Version: 0x00000002
[ 65.090774] mmc1: sdhci: Blk size: 0x00000100 | Blk cnt: 0x00000001
[ 65.097212] mmc1: sdhci: Argument: 0x000001aa | Trn mode: 0x00000013
[ 65.103649] mmc1: sdhci: Present: 0x01fd8008 | Host ctl: 0x00000013
[ 65.110086] mmc1: sdhci: Power: 0x00000002 | Blk gap: 0x00000080
[ 65.116524] mmc1: sdhci: Wake-up: 0x00000008 | Clock: 0x0000003f
[ 65.122961] mmc1: sdhci: Timeout: 0x0000008f | Int stat: 0x00000000
[ 65.129399] mmc1: sdhci: Int enab: 0x007f1003 | Sig enab: 0x007f1003
[ 65.135836] mmc1: sdhci: AC12 err: 0x00000000 | Slot int: 0x00000502
[ 65.142274] mmc1: sdhci: Caps: 0x07eb0000 | Caps_1: 0x8000b407
[ 65.148720] mmc1: sdhci: Cmd: 0x0000081a | Max curr: 0x00ffffff
[ 65.155157] mmc1: sdhci: Resp[0]: 0x00002000 | Resp[1]: 0x00000000
[ 65.161595] mmc1: sdhci: Resp[2]: 0x00000000 | Resp[3]: 0x00000000
[ 65.168031] mmc1: sdhci: Host ctl2: 0x00000000
[ 65.172471] mmc1: sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x00000000
[ 65.178907] mmc1: sdhci: ============================================
[ 75.400682] mmc1: Timeout waiting for hardware cmd interrupt.
[ 75.406433] mmc1: sdhci: ============ SDHCI REGISTER DUMP ===========
[ 75.412871] mmc1: sdhci: Sys addr: 0x00000000 | Version: 0x00000002
[ 75.419317] mmc1: sdhci: Blk size: 0x00000100 | Blk cnt: 0x00000001
[ 75.425754] mmc1: sdhci: Argument: 0x00000000 | Trn mode: 0x00000013
[ 75.432192] mmc1: sdhci: Present: 0x01fd8009 | Host ctl: 0x00000013
[ 75.438638] mmc1: sdhci: Power: 0x00000002 | Blk gap: 0x00000080
[ 75.445075] mmc1: sdhci: Wake-up: 0x00000008 | Clock: 0x0000003f
[ 75.451513] mmc1: sdhci: Timeout: 0x0000008f | Int stat: 0x00000000
[ 75.457950] mmc1: sdhci: Int enab: 0x007f1003 | Sig enab: 0x007f1003
[ 75.464396] mmc1: sdhci: AC12 err: 0x00000000 | Slot int: 0x00000502
[ 75.470834] mmc1: sdhci: Caps: 0x07eb0000 | Caps_1: 0x8000b407
[ 75.477280] mmc1: sdhci: Cmd: 0x00000502 | Max curr: 0x00ffffff
[ 75.483717] mmc1: sdhci: Resp[0]: 0x00002000 | Resp[1]: 0x00000000
[ 75.490155] mmc1: sdhci: Resp[2]: 0x00000000 | Resp[3]: 0x00000000
[ 75.496591] mmc1: sdhci: Host ctl2: 0x00000000
[ 75.501031] mmc1: sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x00000000
[ 75.507467] mmc1: sdhci: ============================================
[ 75.613934] mmc1: Reset 0x2 never completed.
[ 75.618199] mmc1: sdhci: ============ SDHCI REGISTER DUMP ===========
[ 75.624637] mmc1: sdhci: Sys addr: 0x00000000 | Version: 0x00000002
[ 75.631075] mmc1: sdhci: Blk size: 0x00000100 | Blk cnt: 0x00000001
[ 75.637512] mmc1: sdhci: Argument: 0x00000000 | Trn mode: 0x00000013
[ 75.643950] mmc1: sdhci: Present: 0x01fd8008 | Host ctl: 0x00000013
[ 75.650387] mmc1: sdhci: Power: 0x00000002 | Blk gap: 0x00000080
[ 75.656824] mmc1: sdhci: Wake-up: 0x00000008 | Clock: 0x0000003f
[ 75.663262] mmc1: sdhci: Timeout: 0x0000008f | Int stat: 0x00000000
[ 75.669699] mmc1: sdhci: Int enab: 0x007f1003 | Sig enab: 0x007f1003
[ 75.676137] mmc1: sdhci: AC12 err: 0x00000000 | Slot int: 0x00000502
[ 75.682575] mmc1: sdhci: Caps: 0x07eb0000 | Caps_1: 0x8000b407
[ 75.689020] mmc1: sdhci: Cmd: 0x00000502 | Max curr: 0x00ffffff
[ 75.695458] mmc1: sdhci: Resp[0]: 0x00002000 | Resp[1]: 0x00000000
[ 75.701895] mmc1: sdhci: Resp[2]: 0x00000000 | Resp[3]: 0x00000000
[ 75.708332] mmc1: sdhci: Host ctl2: 0x00000000
[ 75.712772] mmc1: sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x00000000
[ 75.719208] mmc1: sdhci: ============================================
The module has 4 wakeup lines BT to host , Host to BT , WLAN to host , host to WLAN.
My questions are :
1. I have enabled the keep-power-in-suspend in dts. So the card should have the power during the suspend time. Whether still a reset is required for the card during resume ?
2. Whether the above wakeup lines has to be configured for the above reset issue? . I strongly believe these lines are used if the Wi-Fi or BT has to be configured as wake up source
