141 lines
4.6 KiB
Plaintext
141 lines
4.6 KiB
Plaintext
# Copyright (c) 2017 - 2018, Nordic Semiconductor ASA
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# SPDX-License-Identifier: Apache-2.0
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menuconfig SPI_NRFX
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bool "nRF SPI nrfx drivers"
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default y
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depends on SOC_FAMILY_NRF
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help
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Enable support for nrfx SPI drivers for nRF MCU series.
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if SPI_NRFX
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config SOC_NRF52832_ALLOW_SPIM_DESPITE_PAN_58
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depends on SOC_NRF52832
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bool "Allow enabling the SPIM driver despite PAN 58"
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help
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Allow enabling the nRF SPI Master with EasyDMA, despite
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Product Anomaly Notice 58 (SPIM: An additional byte is
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clocked out when RXD.MAXCNT == 1 and TXD.MAXCNT <= 1).
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Without this override, the SPI Master is only available
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without EasyDMA. Note that the 'SPIM' and 'SPIS' drivers
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use EasyDMA, while the 'SPI' driver does not.
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When used in conjunction with nRF SPIM Devicetree property
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'anomaly-58-workaround' a workaround can be enabled per SPIM
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instance. If you are certain that transactions with
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RXD.MAXCNT == 1 and TXD.MAXCNT <= 1 will NOT be executed
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then nRF52832 PPI and GPIOTE resources can be saved by not
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enabling 'anomaly-58-workaround' via the Devicetree.
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config SPI_0_NRF_SPI
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def_bool HAS_HW_NRF_SPI0
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select NRFX_SPI0
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help
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Enable nRF SPI Master without EasyDMA on port 0.
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config SPI_0_NRF_SPIM
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def_bool HAS_HW_NRF_SPIM0
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# This driver is not available for nRF52832 because of Product Anomaly 58
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# (SPIM: An additional byte is clocked out when RXD.MAXCNT == 1 and TXD.MAXCNT <= 1)
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# Allow the 'EasyDMA' driver only if this automatic safety-disable is overridden
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depends on (!SOC_NRF52832 || SOC_NRF52832_ALLOW_SPIM_DESPITE_PAN_58)
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select NRFX_SPIM0
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help
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Enable nRF SPI Master with EasyDMA on port 0.
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config SPI_0_NRF_SPIS
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def_bool HAS_HW_NRF_SPIS0
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depends on SPI_SLAVE
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select NRFX_SPIS0
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help
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Enable nRF SPI Slave with EasyDMA on port 0.
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Due to hardware limitations the implementation supports only simple
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buffers (consisting of one part) located in RAM.
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config SPI_1_NRF_SPI
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def_bool HAS_HW_NRF_SPI1
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select NRFX_SPI1
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help
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Enable nRF SPI Master without EasyDMA on port 1.
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config SPI_1_NRF_SPIM
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def_bool HAS_HW_NRF_SPIM1
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# This driver is not available for nRF52832 because of Product Anomaly 58
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# (SPIM: An additional byte is clocked out when RXD.MAXCNT == 1 and TXD.MAXCNT <= 1)
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# Allow the 'EasyDMA' driver only if this automatic safety-disable is overridden
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depends on (!SOC_NRF52832 || SOC_NRF52832_ALLOW_SPIM_DESPITE_PAN_58)
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select NRFX_SPIM1
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help
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Enable nRF SPI Master with EasyDMA on port 1.
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config SPI_1_NRF_SPIS
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def_bool HAS_HW_NRF_SPIS1
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depends on SPI_SLAVE
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select NRFX_SPIS1
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help
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Enable nRF SPI Slave with EasyDMA on port 1.
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Due to hardware limitations the implementation supports only simple
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buffers (consisting of one part) located in RAM.
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config SPI_2_NRF_SPI
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def_bool HAS_HW_NRF_SPI2
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select NRFX_SPI2
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help
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Enable nRF SPI Master without EasyDMA on port 2.
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config SPI_2_NRF_SPIM
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def_bool HAS_HW_NRF_SPIM2
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# This driver is not available for nRF52832 because of Product Anomaly 58
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# (SPIM: An additional byte is clocked out when RXD.MAXCNT == 1 and TXD.MAXCNT <= 1)
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# Allow the 'EasyDMA' driver only if this automatic safety-disable is overridden
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depends on (!SOC_NRF52832 || SOC_NRF52832_ALLOW_SPIM_DESPITE_PAN_58)
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select NRFX_SPIM2
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help
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Enable nRF SPI Master with EasyDMA on port 2.
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config SPI_2_NRF_SPIS
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def_bool HAS_HW_NRF_SPIS2
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depends on SPI_SLAVE
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select NRFX_SPIS2
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help
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Enable nRF SPI Slave with EasyDMA on port 2.
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Due to hardware limitations the implementation supports only simple
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buffers (consisting of one part) located in RAM.
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config SPI_3_NRF_SPIM
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def_bool HAS_HW_NRF_SPIM3
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select NRFX_SPIM3
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help
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Enable nRF SPI Master with EasyDMA on port 3.
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config SPI_3_NRF_SPIS
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def_bool HAS_HW_NRF_SPIS3
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depends on SPI_SLAVE
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select NRFX_SPIS3
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help
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Enable nRF SPI Slave with EasyDMA on port 3.
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Due to hardware limitations the implementation supports only simple
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buffers (consisting of one part) located in RAM.
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config SPI_4_NRF_SPIM
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def_bool HAS_HW_NRF_SPIM4
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select NRFX_SPIM4
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help
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Enable nRF SPI Master with EasyDMA on port 4.
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config SPI_NRFX_RAM_BUFFER_SIZE
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int "Size of RAM buffers for SPIM peripherals"
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default 8
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depends on NRFX_SPIM
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help
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SPIM peripherals cannot transmit data directly from flash. Therefore,
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a buffer in RAM needs to be provided for each instance of SPI driver
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using SPIM peripheral, so that the driver can copy there a chunk of
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data from flash and transmit it.
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The size is specified in bytes. A size of 0 means that this feature
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should be disabled, and the application must then take care of not
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supplying buffers located in flash to the driver, otherwise such
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transfers will fail.
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endif # SPI_NRFX
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