sof-logger shows nothing with -t parameter about linux HOT 8 CLOSED

I can duplicate this issue on UP2, it can be worked around with disabling runtime suspend.

from linux.

@keqiaozhang @RanderWang Could you share more info here why this is a kernel driver bug? This will help Keyon to check this issue asap.

from linux.

hi @keqiaozhang , can you paste sof-logger error, is it something like this?
root@UP-02:/home/apl# ./sof-logger -l sof-apl.ldc -t
CORE LEVEL COMP_ID TIMESTAMP DELTA FILE_NAME CONTENT
root@UP-02:/home/apl# ./sof-logger -l sof-apl.ldc
CORE LEVEL COMP_ID TIMESTAMP DELTA FILE_NAME CONTENT
0 1 DMA 77403.645833 77403.648438 dma.c:59 No DMAs installed
root@UP-02:/home/apl#

from linux.

@keyonjie @mengdonglin
Because this issue cannot be reproduced after rejecting the kernel commit 8031d7f.
The sof-logger error is exactly the same as yours.

1. with -t parameter, no trace log output there.
2. without -t parameter, only shows one line trace log:
   CORE LEVEL COMP_ID TIMESTAMP DELTA FILE_NAME CONTENT
   0 1 DMA 85943.645833 85943.648438 dma.c:59 No DMAs installed

from linux.

@keqiaozhang thanks, it looks dma initialization after resume fails here. so we may need debug FW to root cause it.

from linux.

@keyonjie So it seems to be duplicate of thesofproject/sof#401
I think @akloniex could help to align driver/firmware behavior with you.

from linux.

Not reproduced with kernel branch debug/v4.19-backport, on APL UP2 platfrom.

STEP:

1. sudo sof-logger -l sof-apl.ldc -t

Test env:
hardware version: UP2
sof-master: 04b1ce4
soft-master: 4ac9248
kernel debug/v4.19-backport: e7da1c44
tplg: sof-apl-pcm512x.tplg

from linux.

This issue is fixed in kernel-debug/cros-v4.14-rebase: 90eee4 on YORP

from linux.