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d3664b063e
On stm32 spi devices, there are 2 main IP variants, with and w/o fifo. Fifo is not really used today, but still there is some additional code handling fifo. Today this code is protected under Kconfig symbol SPI_STM32_HAS_FIFO. This code carries redundant information vs dedicated compatible "st,stm32-spi-fifo", which is provided as unique driver compatible for devices supporting this IP as opposed to use of "st,stm32-spi" when fifo is not supported. Having these 2 compatibles defined exclusively is not convenient for migration to DT_INST as DT_INST macros contain compatible string and hence it cannot be used to provide common compatible code for devices defining different compatibles. Based on these observations, review stm32 spi devices compatible declarations. Devices supporting fifo will now declare both compatibles, as proposed by dt spec: "[compatible] property value consists of a concatenated list of null terminated strings, from most specific to most general". Hence field will now be: "st,stm32-spi-fifo", "st,stm32-spi" This way, fifo enabled stm32 spi devices will generate both: DT_INST_STM32_SPI_FOO and DT_INST_STM32_SPI_FIFO_FOO As well as: DT_COMPAT_ST_STM32_SPI and DT_COMPAT_ST_STM32_SPI_FIFO So, DT_INST_STM32_SPI_FOO could be used for device initialization. Also DT_COMPAT_ST_STM32_SPI_FIFO could be used for FIFO handling code inside driver. Hence use it to replace Kconfig symbol SPI_STM32_HAS_FIFO. Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
27 lines
621 B
Plaintext
27 lines
621 B
Plaintext
# STM32 SPI driver configuration options
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# Copyright (c) 2015-2016 Intel Corporation
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# SPDX-License-Identifier: Apache-2.0
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menuconfig SPI_STM32
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bool "STM32 MCU SPI controller driver"
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depends on SOC_FAMILY_STM32
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select USE_STM32_LL_SPI
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help
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Enable SPI support on the STM32 family of processors.
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if SPI_STM32
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config SPI_STM32_INTERRUPT
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bool "STM32 MCU SPI Interrupt Support"
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help
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Enable Interrupt support for the SPI Driver of STM32 family.
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config SPI_STM32_USE_HW_SS
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bool "STM32 Hardware Slave Select support"
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default y
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help
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Use Slave Select pin instead of software Slave Select.
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endif # SPI_STM32
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