drivers: firmware: TISCI driver support

Added TISCI driver for supported devices using the binding ti,k2g-sci

Signed-off-by: Dave Joseph <[email protected]>

Author: Dave Joseph

drivers/firmware/CMakeLists.txt

@@ -3,4 +3,5 @@
 # zephyr-keep-sorted-start
 add_subdirectory_ifdef(CONFIG_ARM_SCMI scmi)
 add_subdirectory_ifdef(CONFIG_NRF_IRONSIDE nrf_ironside)
+add_subdirectory_ifdef(CONFIG_TISCI ti_sci)
 # zephyr-keep-sorted-stop

drivers/firmware/Kconfig

@@ -15,4 +15,14 @@ source "drivers/firmware/nrf_ironside/Kconfig"
 source "drivers/firmware/scmi/Kconfig"
 # zephyr-keep-sorted-stop
 
+config TISCI
+	bool "TISCI Firmware driver"
+	select MBOX
+	help
+	  TISCI firmware driver is a frontend interface
+	  to TI System Controller interface firmware through
+	  secureproxy mailbox.
+
+source "drivers/firmware/ti_sci/Kconfig"
+
 endmenu

drivers/firmware/ti_sci/CMakeLists.txt

@@ -0,0 +1,6 @@
+# Copyright (c) 2025, Texas Instruments
+# SPDX-License-Identifier: Apache-2.0
+
+zephyr_library()
+
+zephyr_library_sources_ifdef(CONFIG_TISCI ti_sci.c)

drivers/firmware/ti_sci/Kconfig

@@ -0,0 +1,18 @@
+# Copyright (c) 2025, Texas Instruments
+# SPDX-License-Identifier: Apache-2.0
+
+if TISCI
+
+config TISCI_INIT_PRIORITY
+	int "TISCI init priority"
+	default KERNEL_INIT_PRIORITY_OBJECTS
+	help
+	  Init priority for the TISCI driver.
+
+config TISCI_RESPONSE_TIMEOUT_MS
+	int "TISCI response timeout in milliseconds"
+	default 100
+	help
+		Timeout in milliseconds to wait for a response from the TISCI firmware.
+
+endif