Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) # SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) config IMX_DSP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) 	tristate "IMX DSP Protocol driver"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) 	depends on IMX_MBOX
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 	  This enables DSP IPC protocol between host AP (Linux)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 	  and the firmware running on DSP.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 	  DSP exists on some i.MX8 processors (e.g i.MX8QM, i.MX8QXP).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 	  It acts like a doorbell. Client might use shared memory to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 	  exchange information with DSP side.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) config IMX_SCU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 	bool "IMX SCU Protocol driver"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	depends on IMX_MBOX
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	select SOC_BUS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	  The System Controller Firmware (SCFW) is a low-level system function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	  which runs on a dedicated Cortex-M core to provide power, clock, and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	  resource management. It exists on some i.MX8 processors. e.g. i.MX8QM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	  (QM, QP), and i.MX8QX (QXP, DX).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	  This driver manages the IPC interface between host CPU and the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	  SCU firmware running on M4.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) config IMX_SCU_PD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	bool "IMX SCU Power Domain driver"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	depends on IMX_SCU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	  The System Controller Firmware (SCFW) based power domain driver.