a529c4511d
Update flash drivers to use DT_HAS_<compat>_ENABLED Kconfig symbol to expose the driver and enable it by default based on devicetree. We remove 'depend on' Kconfig for symbols that would be implied by the devicetree node existing. Signed-off-by: Kumar Gala <galak@kernel.org>
79 lines
2.4 KiB
Plaintext
79 lines
2.4 KiB
Plaintext
# Copyright (c) 2018 Savoir-Faire Linux.
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# SPDX-License-Identifier: Apache-2.0
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menuconfig SPI_NOR
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bool "SPI NOR Flash"
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default y
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depends on DT_HAS_JEDEC_SPI_NOR_ENABLED
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select FLASH_HAS_DRIVER_ENABLED
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select FLASH_HAS_PAGE_LAYOUT
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select FLASH_JESD216
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depends on SPI
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if SPI_NOR
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choice SPI_NOR_SFDP
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prompt "Source for Serial Flash Discoverable Parameters"
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default SPI_NOR_SFDP_MINIMAL
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config SPI_NOR_SFDP_MINIMAL
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bool "Fixed flash configuration"
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help
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Synthesize a minimal configuration assuming 256 By page size and
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standard 4 KiBy and 64 KiBy erase instructions. Requires the size and
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jedec-id properties in the devicetree jedec,spi-nor node.
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config SPI_NOR_SFDP_DEVICETREE
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bool "Basic Flash Parameters from devicetree node"
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help
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The JESD216 Basic Flash Parameters table must be provided in the
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sfdp-bfp property in devicetree. The size and jedec-id properties are
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also required.
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config SPI_NOR_SFDP_RUNTIME
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bool "Read flash parameters at runtime"
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help
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Read all flash device characteristics from the device at runtime.
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This option is the most flexible as it should provide functionality
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for all supported JESD216-compatible devices.
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endchoice
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config SPI_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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Device is connected to SPI bus, it has to
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be initialized after SPI driver.
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config SPI_NOR_CS_WAIT_DELAY
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int "Delay time in us"
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default 0
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help
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This is the wait delay (in us) to allow for CS switching to take effect
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config SPI_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 options include the 32K-byte erase size
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(32768), the sector size (4096), or any non-zero multiple of the
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sector size.
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config SPI_NOR_IDLE_IN_DPD
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bool "Use Deep Power-Down mode when flash is not being accessed."
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help
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Where supported deep power-down mode can reduce current draw
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to as little as 0.1% of standby current. However it takes
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some milliseconds to enter and exit from this mode.
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Select this option for applications where device power
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management is not enabled, the flash remains inactive for
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long periods, and when used the impact of waiting for mode
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enter and exit delays is acceptable.
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endif # SPI_NOR
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