6 files changed, 60 insertions, 2 deletions
diff --git a/plat/nvidia/tegra/common/tegra_pm.c b/plat/nvidia/tegra/common/tegra_pm.c
index 1f59f30aa..5ec6f849e 100644
--- a/plat/nvidia/tegra/common/tegra_pm.c
+++ b/plat/nvidia/tegra/common/tegra_pm.c
@@ -259,7 +259,7 @@ int32_t tegra_validate_ns_entrypoint(uintptr_t entrypoint)
 /*******************************************************************************
  * Export the platform handlers to enable psci to invoke them
  ******************************************************************************/
-static const plat_psci_ops_t tegra_plat_psci_ops = {
+static plat_psci_ops_t tegra_plat_psci_ops = {
 	.cpu_standby			= tegra_cpu_standby,
 	.pwr_domain_on			= tegra_pwr_domain_on,
 	.pwr_domain_off			= tegra_pwr_domain_off,
@@ -296,6 +296,14 @@ int plat_setup_psci_ops(uintptr_t sec_entrypoint,
 	(void)tegra_soc_pwr_domain_on_finish(&target_state);
 
 	/*
+	 * Disable System Suspend if the platform does not
+	 * support it
+	 */
+	if (!plat_supports_system_suspend()) {
+		tegra_plat_psci_ops.get_sys_suspend_power_state = NULL;
+	}
+
+	/*
 	 * Initialize PSCI ops struct
 	 */
 	*psci_ops = &tegra_plat_psci_ops;
diff --git a/plat/nvidia/tegra/include/tegra_private.h b/plat/nvidia/tegra/include/tegra_private.h
index c6ecc0e7b..ad3cee4b4 100644
--- a/plat/nvidia/tegra/include/tegra_private.h
+++ b/plat/nvidia/tegra/include/tegra_private.h
@@ -9,6 +9,7 @@
 #define TEGRA_PRIVATE_H
 
 #include <platform_def.h>
+#include <stdbool.h>
 
 #include <arch.h>
 #include <arch_helpers.h>
@@ -78,6 +79,7 @@ plat_params_from_bl2_t *plat_get_bl31_plat_params(void);
 void plat_early_platform_setup(void);
 void plat_late_platform_setup(void);
 void plat_relocate_bl32_image(const image_info_t *bl32_img_info);
+bool plat_supports_system_suspend(void);
 
 /* Declarations for plat_secondary.c */
 void plat_secondary_setup(void);
diff --git a/plat/nvidia/tegra/soc/t132/plat_setup.c b/plat/nvidia/tegra/soc/t132/plat_setup.c
index 2f54dd525..4bfc2de0e 100644
--- a/plat/nvidia/tegra/soc/t132/plat_setup.c
+++ b/plat/nvidia/tegra/soc/t132/plat_setup.c
@@ -154,3 +154,11 @@ void plat_late_platform_setup(void)
 {
 	; /* do nothing */
 }
+
+/*******************************************************************************
+ * Handler to indicate support for System Suspend
+ ******************************************************************************/
+bool plat_supports_system_suspend(void)
+{
+	return true;
+}
diff --git a/plat/nvidia/tegra/soc/t186/plat_setup.c b/plat/nvidia/tegra/soc/t186/plat_setup.c
index 8bf8382a6..06a328427 100644
--- a/plat/nvidia/tegra/soc/t186/plat_setup.c
+++ b/plat/nvidia/tegra/soc/t186/plat_setup.c
@@ -291,13 +291,16 @@ int32_t plat_core_pos_by_mpidr(u_register_t mpidr)
 	return ret;
 }
 
+/*******************************************************************************
+ * Handler to relocate BL32 image to TZDRAM
+ ******************************************************************************/
 void plat_relocate_bl32_image(const image_info_t *bl32_img_info)
 {
 	const plat_params_from_bl2_t *plat_bl31_params = plat_get_bl31_plat_params();
 	const entry_point_info_t *bl32_ep_info = bl31_plat_get_next_image_ep_info(SECURE);
 	uint64_t tzdram_start, tzdram_end, bl32_start, bl32_end;
 
-	if ((bl32_img_info != NULL)  && (bl32_ep_info != NULL)) {
+	if ((bl32_img_info != NULL) && (bl32_ep_info != NULL)) {
 
 		/* Relocate BL32 if it resides outside of the TZDRAM */
 		tzdram_start = plat_bl31_params->tzdram_base;
@@ -326,3 +329,11 @@ void plat_relocate_bl32_image(const image_info_t *bl32_img_info)
 		}
 	}
 }
+
+/*******************************************************************************
+ * Handler to indicate support for System Suspend
+ ******************************************************************************/
+bool plat_supports_system_suspend(void)
+{
+	return true;
+}
diff --git a/plat/nvidia/tegra/soc/t194/plat_setup.c b/plat/nvidia/tegra/soc/t194/plat_setup.c
index 912dcc6f9..3640ade0a 100644
--- a/plat/nvidia/tegra/soc/t194/plat_setup.c
+++ b/plat/nvidia/tegra/soc/t194/plat_setup.c
@@ -304,6 +304,9 @@ plat_params_from_bl2_t *plat_get_bl31_plat_params(void)
 	return (plat_params_from_bl2_t *)(uintptr_t)val;
 }
 
+/*******************************************************************************
+ * Handler for late platform setup
+ ******************************************************************************/
 void plat_late_platform_setup(void)
 {
 #if ENABLE_STRICT_CHECKING_MODE
@@ -314,3 +317,11 @@ void plat_late_platform_setup(void)
 	mce_enable_strict_checking();
 #endif
 }
+
+/*******************************************************************************
+ * Handler to indicate support for System Suspend
+ ******************************************************************************/
+bool plat_supports_system_suspend(void)
+{
+	return true;
+}
diff --git a/plat/nvidia/tegra/soc/t210/plat_setup.c b/plat/nvidia/tegra/soc/t210/plat_setup.c
index c4bd58e33..c32772de8 100644
--- a/plat/nvidia/tegra/soc/t210/plat_setup.c
+++ b/plat/nvidia/tegra/soc/t210/plat_setup.c
@@ -262,3 +262,21 @@ void plat_gic_setup(void)
 	 */
 	tegra_fc_enable_fiq_to_ccplex_routing();
 }
+/*******************************************************************************
+ * Handler to indicate support for System Suspend
+ ******************************************************************************/
+bool plat_supports_system_suspend(void)
+{
+	const plat_params_from_bl2_t *plat_params = bl31_get_plat_params();
+
+	/*
+	 * sc7entry-fw is only supported by Tegra210 SoCs.
+	 */
+	if (!tegra_chipid_is_t210_b01() && (plat_params->sc7entry_fw_base != 0U)) {
+		return true;
+	} else if (tegra_chipid_is_t210_b01()) {
+		return true;
+	} else {
+		return false;
+	}
+}