tree b10d221f04992b9322b4b42c28aba68636c95aae
parent 377845a9d4f306082b8fcce3802f0d5e880647f3
author CoolStar <coolstarorganization@gmail.com> 1708724395 -0800
committer Matt DeVillier <matt.devillier@gmail.com> 1709066511 +0000

soc/intel/tigerlake: Remove IOM Mctp command from TCSS ASL

Port fix from Alder Lake to not set/reset IOM MCTP during
D3 cold entry or exit.

Ports 5008d340033d ("soc/intel/adl: Remove IOM Mctp command from TCSS
ASL"):

> Recently as part of s0ix hang issue, it was found that sending IOM
> MCTP command as part of TCSS D3 Cold enter-exit sequence created an
> issue.

> We discovered that due to change in hardware sequence, ADL should not
> set/reset IOM MCTP during D3 cold entry or exit. This patch removes
> the bit setting from ASL file to prevent hang in the system.

> This patch also removes obsolete Pcode mailbox communication which
> is no longer required for ADL.

> BUG=b:220796339
> BRANCH=firmware-brya-14505.B
> TEST=Check if hang issue is resolved with the CL and no other
> regression
> observed

> https://review.coreboot.org/c/coreboot/+/62861

Test: build/boot drobit to Win11. Verify TCSS XHCI power management
working and USB Root Hub doesn't Code 43 in device manager

Change-Id: I40a537fd2b0c821caf282f52aaff1874f54325f1
Signed-off-by: CoolStar <coolstarorganization@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80719
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>