diff --git a/src/soc/amd/cezanne/acpi.c b/src/soc/amd/cezanne/acpi.c
index 46afe53..4d2482d 100644
--- a/src/soc/amd/cezanne/acpi.c
+++ b/src/soc/amd/cezanne/acpi.c
@@ -47,7 +47,7 @@
 	fadt->pm_tmr_len = 4;	/* 32 bits */
 	fadt->gpe0_blk_len = 8;	/* 64 bits */
 
-	fill_fadt_extended_pm_regs(fadt);
+	fill_fadt_extended_pm_io(fadt);
 
 	fadt->iapc_boot_arch = cfg->common_config.fadt_boot_arch; /* legacy free default */
 	fadt->flags |=	ACPI_FADT_WBINVD | /* See table 5-34 ACPI 6.3 spec */
diff --git a/src/soc/amd/common/block/acpi/acpi.c b/src/soc/amd/common/block/acpi/acpi.c
index 3ec2ec0..75d4adf 100644
--- a/src/soc/amd/common/block/acpi/acpi.c
+++ b/src/soc/amd/common/block/acpi/acpi.c
@@ -93,11 +93,6 @@
 	acpi_write32(MMIO_ACPI_GPE0_STS, acpi_read32(MMIO_ACPI_GPE0_STS));
 }
 
-void fill_fadt_extended_pm_regs(acpi_fadt_t *fadt)
-{
-	fill_fadt_extended_pm_io(fadt);
-}
-
 int acpi_get_sleep_type(void)
 {
 	return acpi_sleep_from_pm1(acpi_read16(MMIO_ACPI_PM1_CNT_BLK));
diff --git a/src/soc/amd/common/block/include/amdblocks/acpi.h b/src/soc/amd/common/block/include/amdblocks/acpi.h
index 682f8ca..9c70864 100644
--- a/src/soc/amd/common/block/include/amdblocks/acpi.h
+++ b/src/soc/amd/common/block/include/amdblocks/acpi.h
@@ -36,8 +36,6 @@
 /* Clear PM and GPE status registers. */
 void acpi_clear_pm_gpe_status(void);
 
-void fill_fadt_extended_pm_regs(acpi_fadt_t *fadt);
-
 /*
  * If a system reset is about to be requested, modify the PM1 register so it
  * will never be misinterpreted as an S3 resume.
diff --git a/src/soc/amd/genoa/acpi.c b/src/soc/amd/genoa/acpi.c
index 2f7af7a..d9b934f 100644
--- a/src/soc/amd/genoa/acpi.c
+++ b/src/soc/amd/genoa/acpi.c
@@ -39,7 +39,7 @@
 	fadt->pm_tmr_len = 4;	/* 32 bits */
 	fadt->gpe0_blk_len = 8;	/* 64 bits */
 
-	fill_fadt_extended_pm_regs(fadt);
+	fill_fadt_extended_pm_io(fadt);
 
 	fadt->iapc_boot_arch = ACPI_FADT_LEGACY_FREE; /* legacy free default */
 	fadt->flags |=	ACPI_FADT_WBINVD | /* See table 5-34 ACPI 6.3 spec */
diff --git a/src/soc/amd/glinda/acpi.c b/src/soc/amd/glinda/acpi.c
index 90cfef9..88cf688 100644
--- a/src/soc/amd/glinda/acpi.c
+++ b/src/soc/amd/glinda/acpi.c
@@ -49,7 +49,7 @@
 	fadt->pm_tmr_len = 4;	/* 32 bits */
 	fadt->gpe0_blk_len = 8;	/* 64 bits */
 
-	fill_fadt_extended_pm_regs(fadt);
+	fill_fadt_extended_pm_io(fadt);
 
 	fadt->iapc_boot_arch = cfg->common_config.fadt_boot_arch; /* legacy free default */
 	fadt->flags |=	ACPI_FADT_WBINVD | /* See table 5-34 ACPI 6.3 spec */
diff --git a/src/soc/amd/mendocino/acpi.c b/src/soc/amd/mendocino/acpi.c
index edb0c13..07f4d3e 100644
--- a/src/soc/amd/mendocino/acpi.c
+++ b/src/soc/amd/mendocino/acpi.c
@@ -48,7 +48,7 @@
 	fadt->pm_tmr_len = 4;	/* 32 bits */
 	fadt->gpe0_blk_len = 8;	/* 64 bits */
 
-	fill_fadt_extended_pm_regs(fadt);
+	fill_fadt_extended_pm_io(fadt);
 
 	fadt->iapc_boot_arch = cfg->common_config.fadt_boot_arch; /* legacy free default */
 	fadt->flags |=	ACPI_FADT_WBINVD | /* See table 5-34 ACPI 6.3 spec */
diff --git a/src/soc/amd/phoenix/acpi.c b/src/soc/amd/phoenix/acpi.c
index 049033b..9ed1159b 100644
--- a/src/soc/amd/phoenix/acpi.c
+++ b/src/soc/amd/phoenix/acpi.c
@@ -49,7 +49,7 @@
 	fadt->pm_tmr_len = 4;	/* 32 bits */
 	fadt->gpe0_blk_len = 8;	/* 64 bits */
 
-	fill_fadt_extended_pm_regs(fadt);
+	fill_fadt_extended_pm_io(fadt);
 
 	fadt->iapc_boot_arch = cfg->common_config.fadt_boot_arch; /* legacy free default */
 	fadt->flags |=	ACPI_FADT_WBINVD | /* See table 5-34 ACPI 6.3 spec */
diff --git a/src/soc/amd/picasso/acpi.c b/src/soc/amd/picasso/acpi.c
index 35c2b43..c6aa83f 100644
--- a/src/soc/amd/picasso/acpi.c
+++ b/src/soc/amd/picasso/acpi.c
@@ -53,7 +53,7 @@
 	fadt->pm_tmr_len = 4;	/* 32 bits */
 	fadt->gpe0_blk_len = 8;	/* 64 bits */
 
-	fill_fadt_extended_pm_regs(fadt);
+	fill_fadt_extended_pm_io(fadt);
 
 	fadt->iapc_boot_arch = cfg->fadt_boot_arch; /* legacy free default */
 	fadt->flags |=	ACPI_FADT_WBINVD | /* See table 5-34 ACPI 6.3 spec */
diff --git a/src/soc/amd/stoneyridge/acpi.c b/src/soc/amd/stoneyridge/acpi.c
index 21a4834..dc050cf 100644
--- a/src/soc/amd/stoneyridge/acpi.c
+++ b/src/soc/amd/stoneyridge/acpi.c
@@ -49,7 +49,7 @@
 	fadt->pm_tmr_len = 4;	/* 32 bits */
 	fadt->gpe0_blk_len = 8;	/* 64 bits */
 
-	fill_fadt_extended_pm_regs(fadt);
+	fill_fadt_extended_pm_io(fadt);
 
 	fadt->duty_offset = 1;	/* CLK_VAL bits 3:1 */
 	fadt->duty_width = 3;	/* CLK_VAL bits 3:1 */