mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-16 09:48:16 +00:00
b0cc1b846f
This patch update the behavior introduced by
commit 96907c0fe5 ("dm: spi: Read default speed and mode values from DT")
In case of DT boot, don't read default speed and mode for SPI from
CONFIG_* but instead read from DT node. This will make sure that boards
with multiple SPI/QSPI controllers can be probed at different
bus frequencies and SPI modes.
Remove also use in boards of the value speed=0 (no more supported)
for ENV in SPI by using CONFIG_ENV_SPI_MAX_HZ=0.
DT values will be always used when available (full DM support of
SPI slave with available DT node) even if speed and mode are requested;
for example in splash screen support (in splash_sf_read_raw)
or in SPL boot (in spl_spi_load_image).
The caller of spi_get_bus_and_cs() no more need to force speed=0.
But the current behavior don't change if the SPI slave is not
present (device with generic driver is created automatically)
or if platdata is used (CONFIG_OF_PLATDATA).
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
199 lines
6.3 KiB
Text
199 lines
6.3 KiB
Text
menu "SPI Flash Support"
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config DM_SPI_FLASH
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bool "Enable Driver Model for SPI flash"
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depends on DM && DM_SPI
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help
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Enable driver model for SPI flash. This SPI flash interface
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(spi_flash_probe(), spi_flash_write(), etc.) is then
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implemented by the SPI flash uclass. There is one standard
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SPI flash driver which knows how to probe most chips
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supported by U-Boot. The uclass interface is defined in
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include/spi_flash.h, but is currently fully compatible
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with the old interface to avoid confusion and duplication
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during the transition parent. SPI and SPI flash must be
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enabled together (it is not possible to use driver model
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for one and not the other).
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config SPI_FLASH_SANDBOX
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bool "Support sandbox SPI flash device"
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depends on SANDBOX && DM_SPI_FLASH
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help
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Since sandbox cannot access real devices, an emulation mechanism is
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provided instead. Drivers can be connected up to the sandbox SPI
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bus (see CONFIG_SANDBOX_SPI) and SPI traffic will be routed to this
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device. Typically the contents of the emulated SPI flash device is
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stored in a file on the host filesystem.
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config SPI_FLASH
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bool "Legacy SPI Flash Interface support"
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depends on SPI
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select SPI_MEM
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help
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Enable the legacy SPI flash support. This will include basic
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standard support for things like probing, read / write, and
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erasing through cmd_sf interface.
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If unsure, say N
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config SF_DEFAULT_BUS
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int "SPI Flash default bus identifier"
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depends on SPI_FLASH || DM_SPI_FLASH
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default 0
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help
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The default bus may be provided by the platform
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to handle the common case when only a single serial
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flash is present on the system.
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config SF_DEFAULT_CS
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int "SPI Flash default Chip-select"
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depends on SPI_FLASH || DM_SPI_FLASH
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default 0
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help
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The default chip select may be provided by the platform
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to handle the common case when only a single serial
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flash is present on the system.
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config SF_DEFAULT_MODE
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hex "SPI Flash default mode (see include/spi.h)"
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depends on SPI_FLASH || DM_SPI_FLASH
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default 3
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help
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The default mode may be provided by the platform
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to handle the common case when only a single serial
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flash is present on the system.
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Not used for boot with device tree; the SPI driver reads
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speed and mode from platdata values computed from
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available node.
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config SF_DEFAULT_SPEED
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int "SPI Flash default speed in Hz"
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depends on SPI_FLASH || DM_SPI_FLASH
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default 1000000
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help
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The default speed may be provided by the platform
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to handle the common case when only a single serial
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flash is present on the system.
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Not used for boot with device tree; the SPI driver reads
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speed and mode from platdata values computed from
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available node.
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if SPI_FLASH
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config SPI_FLASH_SFDP_SUPPORT
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bool "SFDP table parsing support for SPI NOR flashes"
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depends on !SPI_FLASH_BAR
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help
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Enable support for parsing and auto discovery of parameters for
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SPI NOR flashes using Serial Flash Discoverable Parameters (SFDP)
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tables as per JESD216 standard.
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config SPI_FLASH_BAR
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bool "SPI flash Bank/Extended address register support"
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help
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Enable the SPI flash Bank/Extended address register support.
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Bank/Extended address registers are used to access the flash
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which has size > 16MiB in 3-byte addressing.
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config SF_DUAL_FLASH
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bool "SPI DUAL flash memory support"
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help
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Enable this option to support two flash memories connected to a single
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controller. Currently Xilinx Zynq qspi supports this.
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config SPI_FLASH_ATMEL
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bool "Atmel SPI flash support"
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help
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Add support for various Atmel SPI flash chips (AT45xxx and AT25xxx)
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config SPI_FLASH_EON
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bool "EON SPI flash support"
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help
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Add support for various EON SPI flash chips (EN25xxx)
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config SPI_FLASH_GIGADEVICE
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bool "GigaDevice SPI flash support"
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help
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Add support for various GigaDevice SPI flash chips (GD25xxx)
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config SPI_FLASH_ISSI
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bool "ISSI SPI flash support"
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help
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Add support for various ISSI SPI flash chips (ISxxx)
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config SPI_FLASH_MACRONIX
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bool "Macronix SPI flash support"
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help
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Add support for various Macronix SPI flash chips (MX25Lxxx)
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config SPI_FLASH_SPANSION
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bool "Spansion SPI flash support"
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help
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Add support for various Spansion SPI flash chips (S25FLxxx)
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config SPI_FLASH_STMICRO
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bool "STMicro SPI flash support"
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help
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Add support for various STMicro SPI flash chips (M25Pxxx and N25Qxxx)
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config SPI_FLASH_SST
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bool "SST SPI flash support"
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help
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Add support for various SST SPI flash chips (SST25xxx)
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config SPI_FLASH_WINBOND
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bool "Winbond SPI flash support"
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help
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Add support for various Winbond SPI flash chips (W25xxx)
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config SPI_FLASH_XMC
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bool "XMC SPI flash support"
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help
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Add support for various XMC (Wuhan Xinxin Semiconductor
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Manufacturing Corp.) SPI flash chips (XM25xxx)
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endif
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config SPI_FLASH_USE_4K_SECTORS
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bool "Use small 4096 B erase sectors"
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depends on SPI_FLASH
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default y
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help
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Many flash memories support erasing small (4096 B) sectors. Depending
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on the usage this feature may provide performance gain in comparison
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to erasing whole blocks (32/64 KiB).
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Changing a small part of the flash's contents is usually faster with
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small sectors. On the other hand erasing should be faster when using
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64 KiB block instead of 16 × 4 KiB sectors.
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Please note that some tools/drivers/filesystems may not work with
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4096 B erase size (e.g. UBIFS requires 15 KiB as a minimum).
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config SPI_FLASH_DATAFLASH
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bool "AT45xxx DataFlash support"
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depends on SPI_FLASH && DM_SPI_FLASH
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help
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Enable the access for SPI-flash-based AT45xxx DataFlash chips.
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DataFlash is a kind of SPI flash. Most AT45 chips have two buffers
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in each chip, which may be used for double buffered I/O; but this
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driver doesn't (yet) use these for any kind of i/o overlap or prefetching.
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Sometimes DataFlash is packaged in MMC-format cards, although the
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MMC stack can't (yet?) distinguish between MMC and DataFlash
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protocols during enumeration.
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If unsure, say N
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config SPI_FLASH_MTD
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bool "SPI Flash MTD support"
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depends on SPI_FLASH
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help
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Enable the MTD support for spi flash layer, this adapter is for
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translating mtd_read/mtd_write commands into spi_flash_read/write
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commands. It is not intended to use it within sf_cmd or the SPI
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flash subsystem. Such an adapter is needed for subsystems like
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UBI which can only operate on top of the MTD layer.
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If unsure, say N
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endmenu # menu "SPI Flash Support"
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