Commit Graph

8 Commits

Author SHA1 Message Date
Peter A. Bigot 98a344fe21 drivers: spi_nor: support deep-power-down mode
Add internal API to enter and exit deep power-down mode.  Add Kconfig
option to return to DPD whenever device is not active.

When device power management becomes more mature it should be possible
to implement it, which would allow use of DPD without having to enter
and exit DPD between consecutive transactions.

Signed-off-by: Peter A. Bigot <pab@pabigot.com>
2019-11-09 15:26:06 +01:00
Peter A. Bigot e4c3729ba7 drivers: spi_nor: generalize support for ULBPR instruction
Replace the hard-coded check for JEDEC IDs with a property that must
be set in the devicetree entry.

Signed-off-by: Peter A. Bigot <pab@pabigot.com>
2019-11-09 15:26:06 +01:00
Timo Teräs 52453082f8 drivers: spi_nor: support Microchip SPI flash global unblock
Microchip SPI flash require Global unblock command before writing
is allowed.

Signed-off-by: Timo Teräs <timo.teras@iki.fi>
2019-09-25 17:41:31 +02:00
Peter A. Bigot 2a590d3fa5 drivers/spi_nor: remove configurability of page/sector/block sizes
The JEDEC API defines the hardware page, sector, and block sizes.
Deprecate the Kconfig settings, remove the `erase-size-block` property,
and add `has-be32k` to indicate that 32K-byte erase is supported.
Rework the driver to use the constants instead of configured values.

Signed-off-by: Peter A. Bigot <pab@pabigot.com>
2019-07-24 09:20:56 -04:00
Anas Nashif a2fd7d70ec cleanup: include/: move misc/util.h to sys/util.h
move misc/util.h to sys/util.h and
create a shim for backward-compatibility.

No functional changes to the headers.
A warning in the shim can be controlled with CONFIG_COMPAT_INCLUDES.

Related to #16539

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-06-27 22:55:49 -04:00
Rajavardhan Gundi f5b60eeca8 Kconfig: spi_nor: Remove Erase configuration from Kconfig
Configuration of Erase command is specified in DTS. Hence
the corresponding changes in Kconfig are removed.

Signed-off-by: Rajavardhan Gundi <rajavardhan.gundi@intel.com>
2019-01-16 21:22:56 -05:00
Rajavardhan Gundi 7765c1adaf drivers: flash: spi_nor: Remove unused block_size parameter
Only page and sector size is used by the driver.

Signed-off-by: Rajavardhan Gundi <rajavardhan.gundi@intel.com>
2018-12-02 09:27:16 -05:00
Savinay Dharmappa 87e5493167 drivers: flash: add a generic spi nor flash driver
This driver is inspired from the w25qxxdv SPI NOR flash driver which was
already implementing the CFI (Common Flash Interface) for its purpose.
To handle other NOR flash a flash id table (as Linux do) which contains
the geometry for a few SPI NOR flash based on their JEDEC ID has been
introduced.
We currently support the following flash:
 - W25Q80
 - W25Q16
 - W25Q32
 - S25FL216K
 - MX25UM512

The read and write functions are able to handle more then one page at a
time and return the number of bytes read or write.
Also because every NOR flash expect to disable the write protection
before writing or erasing, the write enable command is now part of the
write and erase functions.

Signed-off-by: Sebastien Bourdelin <sebastien.bourdelin@savoirfairelinux.com>
Signed-off-by: Savinay Dharmappa <savinay.dharmappa@intel.com>
2018-11-13 18:49:03 -05:00