# DesignWare SPI driver configuration options

# Copyright (c) 2015-2016 Intel Corporation
# SPDX-License-Identifier: Apache-2.0

config HAS_SPI_DW
	bool
	help
	  Signifies whether DesignWare SPI compatible HW is available

menuconfig SPI_DW
	bool "Designware SPI controller driver"
	depends on HAS_SPI_DW
	help
	  Enable support for Designware's SPI controllers.

if SPI_DW

config SPI_DW_ARC_AUX_REGS
	bool "Registers are part of ARC auxiliary registers"
	depends on ARC
	default y
	help
	  SPI IP block registers are part of user extended auxiliary
	  registers and thus their access is different than memory
	  mapped registers.

config SPI_DW_FIFO_DEPTH
	int "RX and TX FIFO Depth"
	help
	  Corresponds to the SSI_TX_FIFO_DEPTH and
	  SSI_RX_FIFO_DEPTH of the DesignWare Synchronous
	  Serial Interface. Depth ranges from 2-256.

config SPI_DW_ACCESS_WORD_ONLY
	bool "DesignWare SPI only allows word access"
	help
	  In some case, e.g. ARC HS Development kit, the peripheral space of
	  DesignWare SPI only allows word access, byte access will raise
	  exception.

if SPI_0

config SPI_DW_PORT_0_INTERRUPT_SINGLE_LINE
	bool "Single interrupt line for all interrupts"
	default y
	help
	  Only one line is used to trigger interrupts: RX, TX and ERROR
	  interrupt go all through that line, undifferentiated.

config SPI_DW_PORT_0_CLOCK_GATE
	bool "Enable clock gating"
	depends on CLOCK_CONTROL

if SPI_DW_PORT_0_CLOCK_GATE

config SPI_DW_PORT_0_CLOCK_GATE_DRV_NAME
	string

config SPI_DW_PORT_0_CLOCK_GATE_SUBSYS
	int "Clock controller's subsystem"

endif # SPI_DW_PORT_0_CLOCK_GATE

endif # SPI_0

if SPI_1

config SPI_DW_PORT_1_INTERRUPT_SINGLE_LINE
	bool "Single interrupt line for all interrupts"
	default y

config SPI_DW_PORT_1_CLOCK_GATE
	bool "Enable clock gating"
	depends on CLOCK_CONTROL

if SPI_DW_PORT_1_CLOCK_GATE

config SPI_DW_PORT_1_CLOCK_GATE_DRV_NAME
	string

config SPI_DW_PORT_1_CLOCK_GATE_SUBSYS
	int "Clock controller's subsystem"

endif # SPI_DW_PORT_1_CLOCK_GATE

endif # SPI_1

if SPI_2

config SPI_DW_PORT_2_INTERRUPT_SINGLE_LINE
	bool "Single interrupt line for all interrupts"
	default y
	help
	  Only one line is used to trigger interrupts: RX, TX and ERROR
	  interrupt go all through that line, undifferentiated.

config SPI_DW_PORT_2_CLOCK_GATE
	bool "Enable clock gating"
	depends on CLOCK_CONTROL

if SPI_DW_PORT_2_CLOCK_GATE

config SPI_DW_PORT_2_CLOCK_GATE_DRV_NAME
	string
	default ""

config SPI_DW_PORT_2_CLOCK_GATE_SUBSYS
	int "Clock controller's subsystem"

endif # SPI_DW_PORT_2_CLOCK_GATE

endif # SPI_2

if SPI_3

config SPI_DW_PORT_3_INTERRUPT_SINGLE_LINE
	bool "Single interrupt line for all interrupts"
	default y
	help
	  Only one line is used to trigger interrupts: RX, TX and ERROR
	  interrupt go all through that line, undifferentiated.

config SPI_DW_PORT_3_CLOCK_GATE
	bool "Enable clock gating"
	depends on CLOCK_CONTROL

if SPI_DW_PORT_3_CLOCK_GATE

config SPI_DW_PORT_3_CLOCK_GATE_DRV_NAME
	string
	default ""

config SPI_DW_PORT_3_CLOCK_GATE_SUBSYS
	int "Clock controller's subsystem"

endif # SPI_DW_PORT_3_CLOCK_GATE

endif # SPI_3

endif # SPI_DW