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# Kconfig.dw - DesignWare SPI driver configuration options
#
#
# Copyright (c) 2015-2016 Intel Corporation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
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menuconfig SPI_DW
bool
prompt "Designware SPI controller driver"
depends on SPI
default n
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 SPI_DW && 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.
choice
depends on SPI_DW
prompt "DesignWare SPI interrupt management logic"
default SPI_DW_INTERRUPT_SINGLE_LINE
config SPI_DW_INTERRUPT_SINGLE_LINE
bool "Single interrupt line for all interrupts"
help
Only one line is used to trigger interrupts: RX, TX and ERROR
interrupt go all through that line, undifferentiated.
config SPI_DW_INTERRUPT_SEPARATED_LINES
bool "One line per-interrupt type (RX, TX and ERROR)"
help
Each interrupt gets a dedicated line
endchoice
config SPI_DW_CLOCK_GATE
bool "Enable glock gating"
depends on SPI_DW && SOC_QUARK_SE_C1000
select CLOCK_CONTROL
default n
config SPI_DW_CLOCK_GATE_DRV_NAME
string
depends on SPI_DW_CLOCK_GATE
default ""
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 Syncrhonous
Serial Interface. Depth ranges from 2-256.
config SPI_DW_PORT_0_CLOCK_GATE_SUBSYS
int "Clock controller's subsystem"
depends on SPI_DW_CLOCK_GATE
config SPI_DW_PORT_1_CLOCK_GATE_SUBSYS
int "Clock controller's subsystem"
depends on SPI_DW_CLOCK_GATE
endif # SPI_DW
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