diff --git a/src/Kconfig b/src/Kconfig
index 58c2e07ea9..1a49a8ba55 100644
--- a/src/Kconfig
+++ b/src/Kconfig
@@ -1563,3 +1563,12 @@ config HAVE_RAMSTAGE
 
 config SEPARATE_ROMSTAGE
 	default y
+
+config POSTPONE_SPI_ACCESS
+	bool
+	help
+	  Enable this option to postpone SPI access to later boot phase
+	  (BS_PAYLOAD_BOOT) to prevent flash write access delays caused by
+	  simultaneous accesses from other SPI masters like CSE. This symptom
+	  was found in Intel SoCs (Panther Lake and Wildcat Lake) but it can be
+	  used other SOCs.
diff --git a/src/security/vboot/vbnv_cmos.c b/src/security/vboot/vbnv_cmos.c
index 5073509fc9..916e1ca03e 100644
--- a/src/security/vboot/vbnv_cmos.c
+++ b/src/security/vboot/vbnv_cmos.c
@@ -115,5 +115,10 @@ static void back_up_vbnv_cmos(void *unused)
 	/* Save to flash, will only be saved if different. */
 	save_vbnv_flash(vbnv_cmos);
 }
+
+#if CONFIG(POSTPONE_SPI_ACCESS)
+BOOT_STATE_INIT_ENTRY(BS_PAYLOAD_LOAD, BS_ON_EXIT, back_up_vbnv_cmos, NULL);
+#else
 BOOT_STATE_INIT_ENTRY(BS_POST_DEVICE, BS_ON_EXIT, back_up_vbnv_cmos, NULL);
 #endif
+#endif