[Bug 1844410] Re: [TGL] Thunderbolt support (Tiger Lake)

** Changed in: hwe-next
Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1844410

Title:
[TGL] Thunderbolt support (Tiger Lake)

Status in HWE Next:
Fix Released
Status in intel:
Fix Committed
Status in linux package in Ubuntu:
Invalid
Status in linux-oem-5.6 package in Ubuntu:
Fix Released
Status in linux source package in Focal:
Won't Fix
Status in linux-oem-5.6 source package in Focal:
Fix Released
Status in linux source package in Groovy:
Invalid
Status in linux-oem-5.6 source package in Groovy:
Fix Released

Bug description:
[SRU Justification]

[Impact]

TigerLake platforms fail to probe thunderbolt controller and leaving an
error message:

[ 2.069944] input: PS/2 Generic Mouse as /devices/platform/i8042/serio1/input/input5
[ 21.772011] thunderbolt: probe of 0000:00:0d.2 failed with error -110

It also introduces a nearly 20 second idle at boot.

[Fix]

Commit 57d8df68eb53 ("thunderbolt: Add support for Intel Tiger Lake")
recently landed to v5.8-rc1 addressed this issue.

[Test Case]

Check thunderbolt controller probe messages from dmesg:

thunderbolt 0000:00:0d.2: 0: unsupported switch device id 0x9a1b
thunderbolt 0000:00:0d.2: 0: uid crc8 mismatch (expected: 0x8e, got: 0x59)

[Regression Potential]

Low. This only enables devices which are previously failed in device
initialization.

========== Original Bug Description ==========

Description
TBT enabling in TGL

* 386e5e29d81c ("thunderbolt: Make tb_find_port() available to other files") v5.6-rc1
* 4deb200d34a7 ("thunderbolt: Call tb_eeprom_get_drom_offset() from tb_eeprom_read_n()") v5.6-rc1
* 210e9f56e9e1 ("thunderbolt: Populate PG field in hot plug acknowledgment packet") v5.6-rc1
* b04079837b20 ("thunderbolt: Add initial support for USB4") v5.6-rc1
* 690ac0d20d40 ("thunderbolt: Update Kconfig entries to USB4") v5.6-rc1
* aa43a9dcf7fc ("thunderbolt: Make tb_switch_find_cap() available to other files") v5.6-rc1
* cf29b9afb121 ("thunderbolt: Add support for Time Management Unit") v5.6-rc1
* e6f818585713 ("thunderbolt: Add support for USB 3.x tunnels") v5.6-rc1

Target Kernel: 5.6
Target Release: 20.10

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