diff --git a/plat/arm/css/sgi/include/platform_def.h b/plat/arm/css/sgi/include/platform_def.h
index c645d109e..ce86a75a9 100644
--- a/plat/arm/css/sgi/include/platform_def.h
+++ b/plat/arm/css/sgi/include/platform_def.h
@@ -62,11 +62,6 @@
 
 #define PLAT_MAX_PWR_LVL		U(1)
 
-#define PLAT_ARM_G1S_IRQS		ARM_G1S_IRQS,			\
-					CSS_IRQ_MHU
-
-#define PLAT_ARM_G0_IRQS		ARM_G0_IRQS
-
 #define PLAT_ARM_G1S_IRQ_PROPS(grp)	CSS_G1S_IRQ_PROPS(grp)
 #define PLAT_ARM_G0_IRQ_PROPS(grp)	ARM_G0_IRQ_PROPS(grp)
 
diff --git a/plat/arm/css/sgi/include/sgi_plat_config.h b/plat/arm/css/sgi/include/sgi_plat_config.h
index c9ff1fe23..9b29d74e4 100644
--- a/plat/arm/css/sgi/include/sgi_plat_config.h
+++ b/plat/arm/css/sgi/include/sgi_plat_config.h
@@ -7,7 +7,6 @@
 #ifndef __SGI_PLAT_CONFIG_H__
 #define __SGI_PLAT_CONFIG_H__
 
-#include <arm_gic.h>
 #include <ccn.h>
 #include <gicv3.h>
 
diff --git a/plat/arm/css/sgi/sgi-common.mk b/plat/arm/css/sgi/sgi-common.mk
index 74d255cba..28f97b1f1 100644
--- a/plat/arm/css/sgi/sgi-common.mk
+++ b/plat/arm/css/sgi/sgi-common.mk
@@ -6,8 +6,6 @@
 
 CSS_USE_SCMI_SDS_DRIVER		:=	1
 
-ENABLE_PLAT_COMPAT		:=	0
-
 CSS_ENT_BASE			:=	plat/arm/css/sgi
 
 RAS_EXTENSION			:=	0
diff --git a/plat/arm/css/sgi/sgi_plat.c b/plat/arm/css/sgi/sgi_plat.c
index 0a7e319db..710430bb7 100644
--- a/plat/arm/css/sgi/sgi_plat.c
+++ b/plat/arm/css/sgi/sgi_plat.c
@@ -65,7 +65,7 @@ const mmap_region_t plat_arm_mmap[] = {
 #if ENABLE_SPM
 	ARM_SP_IMAGE_MMAP,
 #endif
-#if TRUSTED_BOARD_BOOT && LOAD_IMAGE_V2 && !BL2_AT_EL3
+#if TRUSTED_BOARD_BOOT && !BL2_AT_EL3
 	ARM_MAP_BL1_RW,
 #endif
 	{0}
@@ -148,7 +148,7 @@ const struct secure_partition_boot_info *plat_get_secure_partition_boot_info(
 }
 #endif /* ENABLE_SPM && defined(IMAGE_BL31) */
 
-#if TRUSTED_BOARD_BOOT && LOAD_IMAGE_V2
+#if TRUSTED_BOARD_BOOT
 int plat_get_mbedtls_heap(void **heap_addr, size_t *heap_size)
 {
 	assert(heap_addr != NULL);
diff --git a/plat/arm/css/sgm/include/sgm_plat_config.h b/plat/arm/css/sgm/include/sgm_plat_config.h
index b171d9a68..75abeffb2 100644
--- a/plat/arm/css/sgm/include/sgm_plat_config.h
+++ b/plat/arm/css/sgm/include/sgm_plat_config.h
@@ -7,7 +7,6 @@
 #ifndef __SGM_PLAT_CONFIG_H__
 #define __SGM_PLAT_CONFIG_H__
 
-#include <arm_gic.h>
 #include <ccn.h>
 #include <gicv3.h>
 
diff --git a/plat/arm/css/sgm/sgm-common.mk b/plat/arm/css/sgm/sgm-common.mk
index 6a3caba24..b10e14cb1 100644
--- a/plat/arm/css/sgm/sgm-common.mk
+++ b/plat/arm/css/sgm/sgm-common.mk
@@ -48,9 +48,6 @@ BL31_SOURCES		+=	$(SGM_CPU_SOURCES)			\
 # sgm uses CCI-500 as Cache Coherent Interconnect
 ARM_CCI_PRODUCT_ID	:=	500
 
-# Disable the PSCI platform compatibility layer
-ENABLE_PLAT_COMPAT	:=	0
-
 # System coherency is managed in hardware
 HW_ASSISTED_COHERENCY	:=	1
 
diff --git a/plat/arm/css/sgm/sgm_mmap_config.c b/plat/arm/css/sgm/sgm_mmap_config.c
index 8a4a8ab03..0f0410995 100644
--- a/plat/arm/css/sgm/sgm_mmap_config.c
+++ b/plat/arm/css/sgm/sgm_mmap_config.c
@@ -43,7 +43,7 @@ const mmap_region_t plat_arm_mmap[] = {
 #ifdef SPD_opteed
 	ARM_OPTEE_PAGEABLE_LOAD_MEM,
 #endif
-#if TRUSTED_BOARD_BOOT && LOAD_IMAGE_V2 && !BL2_AT_EL3
+#if TRUSTED_BOARD_BOOT && !BL2_AT_EL3
 	ARM_MAP_BL1_RW,
 #endif
 	{0}
diff --git a/plat/arm/css/sgm/sgm_plat_config.c b/plat/arm/css/sgm/sgm_plat_config.c
index 97b16a8f8..e977e618b 100644
--- a/plat/arm/css/sgm/sgm_plat_config.c
+++ b/plat/arm/css/sgm/sgm_plat_config.c
@@ -68,7 +68,7 @@ css_plat_config_t *get_plat_config(void)
 	return css_plat_info;
 }
 
-#if TRUSTED_BOARD_BOOT && LOAD_IMAGE_V2
+#if TRUSTED_BOARD_BOOT
 int plat_get_mbedtls_heap(void **heap_addr, size_t *heap_size)
 {
 	assert(heap_addr != NULL);