[BUG][JSL][DP-MST]Cannot playback to 2 DP displays connected through a DP-MST hub simultaneously

[Liviali155]

Describe the bug
Both the monitors connected show display but can not play audio at the same time when check 2 DP playback in MST mode

To Reproduce

1.Two monitors are connected via one DP hub using DP-DP cables
2."sudo reboot" to reboot sysytem
3."amixer contents |less" to check jack status(0,3 and 0,4 are on)
4.aplay -Dhw:0,4 -r 48000 -c 2 -fs16_le wav/2.wav wav/2.wav wav/2.wav -vv -i
5.open another terminal to "aplay -Dhw:0,3 -r 48000 -c 2 -fs16_le wav/2.wav wav/2.wav wav/2.wav -vv -i"

Reproduce rate
5/5

Expected result
the monitors connected can play video and has sound output

Actual result

Test recipe
Kernel:https://github.com/thesofproject/linux/commits/topic/sof-dev commit: 1b2f260 +PR #2208 +PR #2184
FW: https://github.com/thesofproject/sof/tree/releases/jsl/v3.0-rc1(commit: 3d8a0ac)
+PR #thesofproject/sof#3053
+PR # thesofproject/sof#2987
Tplg: sof-hda-generic-4ch.tplg
Platform:JSL-RVP with ALC700 in HDA mode

dmesg_0629.log
sof-logger_0629.log

[Liviali155]

When check check DP playback in dasiy chain mode also has this issue, both the display can not play audio at the same time

[Liviali155]

Reboot then connected two monitors via one DP hub using DP-DP cables,also has this issue when playback via 2 DP displays
dmesg062900.log

[Liviali155]

After applied #2240
Error not seen when check DP playback in dasiy chain mode and 2 DP playback in MST mode

[kv2019i]

Thanks @Liviali155 ! So it seems this is fixed by #2240 as well.

[ClarexZhou]

close for PR #2240 is merged.