soc/amd/mendocino: update FSP parameters for eDP power sequence adjustment

Add UPD parameter for eDP power sequence adjustment.

The edp_panel_t9_ms parameter is set for bloff to varybloff.

BUG=b:271704149
BRANCH=Skyrim
TEST=Build; Verify the UPD was pass to system integrated table.

Signed-off-by: Chris Wang <chris.wang@amd.corp-partner.google.com>
Change-Id: Id651c9cc4d6f4e27f6c78ca10ca12936d66ef43b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74789
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Reviewed-by: Jason Glenesk <jason.glenesk@gmail.com>
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/soc/amd/mendocino/chip.h b/src/soc/amd/mendocino/chip.h
index 5eb7c41..f161038 100644
--- a/src/soc/amd/mendocino/chip.h
+++ b/src/soc/amd/mendocino/chip.h
@@ -179,6 +179,8 @@
 
 	/* Set for eDP power sequence adjustment timing T8 (from varybl to blon). */
 	uint8_t edp_panel_t8_ms;
+	/* Set for eDP power sequence adjustment timing T9 (from bloff to varybloff). */
+	uint8_t edp_panel_t9_ms;
 
 };
 
diff --git a/src/soc/amd/mendocino/fsp_m_params.c b/src/soc/amd/mendocino/fsp_m_params.c
index cea26a9..6582a7c 100644
--- a/src/soc/amd/mendocino/fsp_m_params.c
+++ b/src/soc/amd/mendocino/fsp_m_params.c
@@ -171,6 +171,7 @@
 
 	mcfg->dxio_tx_vboost_enable = config->dxio_tx_vboost_enable;
 	mcfg->edp_panel_t8_ms = config->edp_panel_t8_ms;
+	mcfg->edp_panel_t9_ms = config->edp_panel_t9_ms;
 
 	fsp_fill_pcie_ddi_descriptors(mcfg);
 	fsp_assign_ioapic_upds(mcfg);