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Most JEDEC NOR flash devices uses not only typical SPI mode (MISO,MOSI,SCK and CS), but also QSPI mode (IO0,IO1,IO2,IO3,SCK and CS). QSPI mode uses more data lines and as a result provide higher throughput. If this were not enough, Nordic chips provide hardware acceleration for read/write/erase functions, what gives significant performance boost. It does a lot of things "behind the scene", i.e when user has written some data to the flash and would like to read them back, it has to wait until the flash is ready by reading WIP bit in Status Register. This driver does it automatically. Signed-off-by: Kamil Lazowski <Kamil.Lazowski@nordicsemi.no>
33 lines
823 B
Plaintext
33 lines
823 B
Plaintext
# Copyright (c) 2019, Nordic Semiconductor ASA
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# SPDX-License-Identifier: Apache-2.0
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menuconfig NORDIC_QSPI_NOR
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bool "QSPI NOR Flash"
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select FLASH_HAS_DRIVER_ENABLED
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select NRFX_QSPI
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depends on HAS_HW_NRF_QSPI
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help
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Enable support for nrfx QSPI driver with EasyDMA.
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if NORDIC_QSPI_NOR
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config NORDIC_QSPI_NOR_QE_BIT
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int "Quad Enable bit number in Status Register"
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default 6
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config NORDIC_QSPI_NOR_INIT_PRIORITY
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int
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default 80
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help
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Device driver initialization priority.
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config NORDIC_QSPI_NOR_FLASH_LAYOUT_PAGE_SIZE
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int "Page size to use for FLASH_LAYOUT feature"
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default 65536
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help
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When CONFIG_FLASH_PAGE_LAYOUT is used this driver will support
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that API. By default the page size corresponds to the block
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size (65536). Other option include the sector size (4096).
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endif # NORDIC_QSPI_NOR
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