u-boot.git/include/spi.h, branch v2020.07

common: Drop linux/bitops.h from common header

2020-05-19T01:19:23+00:00

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass

spi: Add SPI mode enums

2020-04-16T06:36:28+00:00

With ACPI we need to describe the settings of the SPI bus. Add enums to
handle this.

Signed-off-by: Simon Glass 
Reviewed-by: Bin Meng 
Reviewed-by: Wolfgang Wallner

mtd: spi-nor-core: Add octal mode support

2020-01-27T16:57:22+00:00

Add support for Octal flash devices. Octal flash devices use 8 IO lines
for data transfer. Currently only 1-1-8 Octal Read mode is supported.

Signed-off-by: Vignesh Raghavendra 
Reviewed-by: Jagan Teki

dm: spi: Check cs number before accessing slaves

2020-01-27T16:57:21+00:00

Add chip select number check in spi_find_chip_select().

Signed-off-by: Bin Meng 
Tested-by: Jagan Teki  # SoPine

spi: Correct operations check in dm_spi_xfer()

2019-12-15T03:44:21+00:00

At present we have to have an xfer() method even if it does nothing. This
is not correct, so fix it.

Signed-off-by: Simon Glass 
Reviewed-by: Bin Meng

spi: Add support for memory-mapped flash

2019-11-02T23:20:26+00:00

On x86 platforms the SPI flash can be mapped into memory so that the
contents can be read with normal memory accesses.

Add a new SPI method to find the location of the SPI flash in memory. This
differs from the existing device-tree "memory-map" mechanism in that the
location can be discovered at run-time.

Signed-off-by: Simon Glass 
Reviewed-by: Bin Meng

dm: spi: Change cs_info op to return -EINVAL for invalid cs num

2019-10-24T19:18:31+00:00

We need distinguish the following two situations in various SPI APIs:

- given chip select num is invalid
- given chip select num is valid, but no device is attached

Currently -ENODEV is returned for both cases.

For the first case, it's more reasonable to return -EINVAL instead of
-ENODEV for invalid chip select numbers.

Signed-off-by: Bin Meng 
Tested-by: Jagan Teki  # SoPine
Reviewed-by: Jagan Teki

spi: Add spi_write_then_read

2019-09-16T02:39:22+00:00

Add support for SPI synchronous write followed by read,
this is common interface call from spi-nor to spi drivers.

Reviewed-by: Simon Glass 
Signed-off-by: Jagan Teki 
Tested-by: Adam Ford  #da850-evm

dm: spi: Read default speed and mode values from DT

2019-04-12T06:24:50+00:00

This patch update the behavior introduced by
commit 96907c0fe50a ("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 
Acked-by: Jagan Teki

spi: Remove unused spi_init

2018-11-27T15:36:53+00:00

Remove spi_init definition which never used on
respective code since from many years.

Signed-off-by: Jagan Teki