diff options
| -rw-r--r-- | src/soc/intel/alderlake/Kconfig | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/soc/intel/alderlake/Kconfig b/src/soc/intel/alderlake/Kconfig index a200121509..5e3209a8fd 100644 --- a/src/soc/intel/alderlake/Kconfig +++ b/src/soc/intel/alderlake/Kconfig @@ -447,6 +447,28 @@ config ALDERLAKE_ENABLE_SOC_WORKAROUND help Selects the workarounds applicable for Alder Lake SoC. +config USE_UNIFIED_AP_FIRMWARE_FOR_UFS_AND_NON_UFS + bool + help + Alder Lake SoC based OEM board design with UFS and non-UFS planned to use an + unified AP firmware which demanded to have a unified descriptor. It means UFS + controller needs to default fuse enabled to let UFS SKU to boot. + + On such design with non-UFS SKU is exhibiting S0ix failure due to UFS remain + enabled in the strap although FSP-S is making the UFS controller function + disabled. The potential root cause of this behaviour is although the UFS + controller is function disabled but MPHY clock is still in active state. + + A possible solution to this problem is to issue a warm reboot (if boot path is + S5->S0 or G3->S0) after disabling the UFS and let PMC to read the function + disable state of the UFS for disabling the MPHY clock. + + Mainboard users with such board design where OEM would like to use an unified AP + firmware to support both UFS and non-UFS sku booting might need to choose this + config to allow disabling UFS while booting on the non-UFS SKU. + Note: selection of this config would introduce an additional warm reset in + cold-reset scenarios due to function disabling of the UFS controller. + choice prompt "Multiprocessor (MP) Initialization configuration to use" default USE_FSP_MP_INIT |