diff --git a/src/mainboard/google/fatcat/variants/baseboard/fatcat/devicetree.cb b/src/mainboard/google/fatcat/variants/baseboard/fatcat/devicetree.cb
index f9c79adc8f..aa297b1a91 100644
--- a/src/mainboard/google/fatcat/variants/baseboard/fatcat/devicetree.cb
+++ b/src/mainboard/google/fatcat/variants/baseboard/fatcat/devicetree.cb
@@ -98,7 +98,6 @@ chip soc/intel/pantherlake
 	register "pch_hda_idisp_link_tmode" = "HDA_TMODE_8T"
 	register "pch_hda_idisp_link_frequency" = "HDA_LINKFREQ_96MHZ"
 	register "pch_hda_idisp_codec_enable" = "true"
-	register "pch_hda_sdi_enable" = "{ true, false }"
 
 	device domain 0 on
 		device ref dtt on end
diff --git a/src/mainboard/google/fatcat/variants/fatcat/Makefile.mk b/src/mainboard/google/fatcat/variants/fatcat/Makefile.mk
index eb361dfe89..b9f1fd15dd 100644
--- a/src/mainboard/google/fatcat/variants/fatcat/Makefile.mk
+++ b/src/mainboard/google/fatcat/variants/fatcat/Makefile.mk
@@ -5,5 +5,5 @@ romstage-y += gpio.c
 romstage-y += memory.c
 romstage-$(CONFIG_FW_CONFIG) += fw_config.c
 ramstage-y += gpio.c
-ramstage-$(CONFIG_FW_CONFIG) += variant.c
+romstage-$(CONFIG_FW_CONFIG) += variant.c
 ramstage-$(CONFIG_FW_CONFIG) += fw_config.c
diff --git a/src/mainboard/google/fatcat/variants/fatcat/variant.c b/src/mainboard/google/fatcat/variants/fatcat/variant.c
index 85c92430f7..66c86cf161 100644
--- a/src/mainboard/google/fatcat/variants/fatcat/variant.c
+++ b/src/mainboard/google/fatcat/variants/fatcat/variant.c
@@ -1,6 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
 #include <baseboard/variants.h>
+#include <fsp/api.h>
 #include <fw_config.h>
 #include <sar.h>
 
@@ -25,3 +26,15 @@ void variant_update_soc_chip_config(struct soc_intel_pantherlake_config *config)
 		}
 	}
 }
+
+void variant_update_soc_memory_init_params(FSPM_UPD *memupd)
+{
+	FSP_M_CONFIG *m_cfg = &memupd->FspmConfig;
+
+	/* HDA Audio */
+	if (fw_config_probe(FW_CONFIG(AUDIO, AUDIO_ALC256_HDA))) {
+		printk(BIOS_INFO, "Overriding HDA SDI lanes.\n");
+		m_cfg->PchHdaSdiEnable[0] = true;
+		m_cfg->PchHdaSdiEnable[1] = false;
+	}
+}
diff --git a/src/mainboard/google/fatcat/variants/francka/Makefile.mk b/src/mainboard/google/fatcat/variants/francka/Makefile.mk
index f4b5d45f77..59936d98b2 100644
--- a/src/mainboard/google/fatcat/variants/francka/Makefile.mk
+++ b/src/mainboard/google/fatcat/variants/francka/Makefile.mk
@@ -5,6 +5,6 @@ bootblock-y += gpio.c
 romstage-y += gpio.c
 romstage-y += memory.c
 romstage-$(CONFIG_FW_CONFIG) += fw_config.c
-
+romstage-$(CONFIG_FW_CONFIG) += variant.c
 ramstage-y += gpio.c
 ramstage-$(CONFIG_FW_CONFIG) += fw_config.c
diff --git a/src/mainboard/google/fatcat/variants/francka/variant.c b/src/mainboard/google/fatcat/variants/francka/variant.c
new file mode 100644
index 0000000000..0943ee18be
--- /dev/null
+++ b/src/mainboard/google/fatcat/variants/francka/variant.c
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <baseboard/variants.h>
+#include <fsp/api.h>
+#include <fw_config.h>
+
+void variant_update_soc_memory_init_params(FSPM_UPD *memupd)
+{
+	FSP_M_CONFIG *m_cfg = &memupd->FspmConfig;
+
+	/* HDA Audio */
+	if (fw_config_probe(FW_CONFIG(AUDIO, AUDIO_ALC256M_CG_HDA))) {
+		printk(BIOS_INFO, "Overriding HDA SDI lanes.\n");
+		m_cfg->PchHdaSdiEnable[0] = true;
+		m_cfg->PchHdaSdiEnable[1] = false;
+	}
+}