diff options
| author | Jeremy Soller <jeremy@system76.com> | 2023-05-16 15:04:08 -0600 |
|---|---|---|
| committer | Martin L Roth <gaumless@gmail.com> | 2023-08-09 14:57:55 +0000 |
| commit | d59c79987df0498de7ee847f41782457a5320141 (patch) | |
| tree | e79ad91a06d476041aeb50c0b13233c0335e0683 /src/soc/intel/alderlake | |
| parent | 646f7b8443b2228f563e0c8bd78257c85db59b4f (diff) | |
Revert "soc/intel/{adl, cmn/pcie}: Fix ASPM configuration enum definitions"
This reverts commit 5dfec718290609dc0fd0331070ad703107e0b7e7.
Reason for revert: This change made it impossible to disable ASPM by
FSP parameter. ASPM_DISABLE would result in the FSP parameter not
being programmed, causing it to be the FSP default value instead.
This additionally fixes MTL to match ADL.
Change-Id: I60c0ea08513fcb0035449ea3fef1681de528c545
Signed-off-by: Jeremy Soller <jeremy@system76.com>
Signed-off-by: Tim Crawford <tcrawford@system76.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75280
Reviewed-by: Sean Rhodes <sean@starlabs.systems>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/intel/alderlake')
| -rw-r--r-- | src/soc/intel/alderlake/fsp_params.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/src/soc/intel/alderlake/fsp_params.c b/src/soc/intel/alderlake/fsp_params.c index 2260259753..4c8865c090 100644 --- a/src/soc/intel/alderlake/fsp_params.c +++ b/src/soc/intel/alderlake/fsp_params.c @@ -484,18 +484,23 @@ static int get_l1_substate_control(enum L1_substates_control ctl) } /* + * Chip config parameter pcie_rp_aspm uses (UPD value + 1) because + * a UPD value of 0 for pcie_rp_aspm means disabled. In order to ensure + * that the mainboard setting does not disable ASPM incorrectly, chip + * config parameter values are offset by 1 with 0 meaning use FSP UPD default. * get_aspm_control() ensures that the right UPD value is set in fsp_params. - * 0: Disable ASPM - * 1: L0s only - * 2: L1 only - * 3: L0s and L1 - * 4: Auto configuration + * 0: Use FSP UPD default + * 1: Disable ASPM + * 2: L0s only + * 3: L1 only + * 4: L0s and L1 + * 5: Auto configuration */ static unsigned int get_aspm_control(enum ASPM_control ctl) { - if (ctl > ASPM_AUTO) + if ((ctl > ASPM_AUTO) || (ctl == ASPM_DEFAULT)) ctl = ASPM_AUTO; - return ctl; + return ctl - 1; } /* This function returns the VccIn Aux Imon IccMax values for ADL and RPL |