diff options
| author | Chris.Wang <chris.wang@amd.corp-partner.google.com> | 2022-12-28 17:07:48 +0800 |
|---|---|---|
| committer | Martin L Roth <gaumless@gmail.com> | 2023-01-04 07:15:10 +0000 |
| commit | ad12b4f4404f7c3473dcf85960efe3f8a016f22b (patch) | |
| tree | cc78ea24932c75081f09f975dc8b3c55eabcbb57 /src/soc/amd/mendocino | |
| parent | e66fcb87fed9b25be5e35eef05133ef7596edd46 (diff) | |
soc/amd/mendocino: Hook up UPD dxio_tx_vboost_enable for PCIe optimization
Add the UPD dxio_tx_vboost_enable for PCIe optimization.
It will impact the PCIe signal integrity, need to double-confirm
the SI result after enabling this setting.
BUG=b:259622787
BRANCH=none
TEST=confirm the setting has been set correspondingly with checking
the FSP log.
Signed-off-by: Chris.Wang <chris.wang@amd.corp-partner.google.com>
Change-Id: I05ae5b3091219e0cb1fe469c929fad6a725db678
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71562
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
Reviewed-by: Jason Glenesk <jason.glenesk@amd.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/amd/mendocino')
| -rw-r--r-- | src/soc/amd/mendocino/chip.h | 3 | ||||
| -rw-r--r-- | src/soc/amd/mendocino/fsp_m_params.c | 2 |
2 files changed, 5 insertions, 0 deletions
diff --git a/src/soc/amd/mendocino/chip.h b/src/soc/amd/mendocino/chip.h index c206445e58..cf31cd7a30 100644 --- a/src/soc/amd/mendocino/chip.h +++ b/src/soc/amd/mendocino/chip.h @@ -164,6 +164,9 @@ struct soc_amd_mendocino_config { uint8_t usb_phy_custom; struct usb_phy_config usb_phy; + /* Set for PCIe optimization w/a and a double confirming on the result of PCIe Signal + Integrity is highly recommended. */ + uint8_t dxio_tx_vboost_enable; }; #endif /* MENDOCINO_CHIP_H */ diff --git a/src/soc/amd/mendocino/fsp_m_params.c b/src/soc/amd/mendocino/fsp_m_params.c index d6eae9a7be..8533743d51 100644 --- a/src/soc/amd/mendocino/fsp_m_params.c +++ b/src/soc/amd/mendocino/fsp_m_params.c @@ -169,6 +169,8 @@ void platform_fsp_memory_init_params_cb(FSPM_UPD *mupd, uint32_t version) mcfg->usb_phy_ptr = 0; } + mcfg->dxio_tx_vboost_enable = config->dxio_tx_vboost_enable; + fsp_fill_pcie_ddi_descriptors(mcfg); fsp_assign_ioapic_upds(mcfg); mb_pre_fspm(mcfg); |