diff --git a/plat/ti/k3/board/generic/include/board_def.h b/plat/ti/k3/board/generic/include/board_def.h
index fe0a062..1bf58ed 100644
--- a/plat/ti/k3/board/generic/include/board_def.h
+++ b/plat/ti/k3/board/generic/include/board_def.h
@@ -32,4 +32,7 @@
 #define PLAT_MAX_OFF_STATE		U(2)
 #define PLAT_MAX_RET_STATE		U(1)
 
+#define PLAT_PROC_START_ID		32
+#define PLAT_PROC_DEVICE_START_ID	202
+
 #endif /* BOARD_DEF_H */
diff --git a/plat/ti/k3/common/k3_psci.c b/plat/ti/k3/common/k3_psci.c
index 4d6428b..20d1ae6 100644
--- a/plat/ti/k3/common/k3_psci.c
+++ b/plat/ti/k3/common/k3_psci.c
@@ -9,8 +9,11 @@
 #include <debug.h>
 #include <k3_gicv3.h>
 #include <psci.h>
+#include <platform.h>
 #include <stdbool.h>
 
+#include <ti_sci.h>
+
 #define STUB() ERROR("stub %s called\n", __func__)
 
 uintptr_t k3_sec_entrypoint;
@@ -33,9 +36,40 @@
 
 static int k3_pwr_domain_on(u_register_t mpidr)
 {
-	sev();
+	int core_id, proc, device, ret;
+
+	core_id = plat_core_pos_by_mpidr(mpidr);
+	if (core_id < 0) {
+		ERROR("Could not get target core id: %d\n", core_id);
+		return PSCI_E_INTERN_FAIL;
+	}
+
+	proc = PLAT_PROC_START_ID + core_id;
+	device = PLAT_PROC_DEVICE_START_ID + core_id;
+
+	ret = ti_sci_proc_request(proc);
+	if (ret) {
+		ERROR("Request for processor failed: %d\n", ret);
+		return PSCI_E_INTERN_FAIL;
+	}
+
+	ret = ti_sci_proc_set_boot_cfg(proc, k3_sec_entrypoint, 0, 0);
+	if (ret) {
+		ERROR("Request to set core boot address failed: %d\n", ret);
+		return PSCI_E_INTERN_FAIL;
+	}
+
+	ret = ti_sci_device_get(device);
+	if (ret) {
+		ERROR("Request to start core failed: %d\n", ret);
+		return PSCI_E_INTERN_FAIL;
+	}
 
-	/* TODO: Indicate to System firmware about powering up */
+	ret = ti_sci_proc_release(proc);
+	if (ret) {
+		/* this is not fatal */
+		WARN("Could not release processor control: %d\n", ret);
+	}
 
 	return PSCI_E_SUCCESS;
 }