Use the spi_mem_default_supports_op() core helper in order to take into
account the buswidth specified by the user in device tree.
Fixes: 24c8ff4684 ("spi: Add Atmel QuadSPI driver")
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
sama7g5 QSPI has:
1/ One Octal Serial Peripheral Interfaces (QSPI0) Supporting Up to
200 MHz DDR. Octal, TwinQuad, Hyperflash and OctaFlash Protocols Supported
2/ One Quad Serial Peripheral Interfaces (QSPI1) Supporting Up to
90 MHz DDR/133 MHz SDR
The QSPI controller of SAMA7G5 uses different clock domains, hence extra
synchronization operations must be performed before accessing some
registers. Differentiate between the versions of the IP using has_gclk.
Differentiate between QSPI0 and QSPI1 with has_octal.
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
It was wrongly set to "MR", fix it.
Fixes: 52e2565bfb ("spi: atmel-quadspi: Add verbose debug facilities to monitor register accesses")
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
This construct is quite long-winded. In earlier days it made some sense
since auto-allocation was a strange concept. But with driver model now
used pretty universally, we can shorten this to 'auto'. This reduces
verbosity and makes it easier to read.
Coincidentally it also ensures that every declaration is on one line,
thus making dtoc's job easier.
Signed-off-by: Simon Glass <sjg@chromium.org>
This feature should not be enabled in release but can be useful for
developers who need to monitor register accesses at some specific places.
Helped me identify a bug in u-boot, by comparing the register accesses
from the u-boot driver with the ones from its linux variant.
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
[jagan: use 16 bit array with tmp variable]
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
The sama5d2 QSPI controller memory space is limited to 128MB:
0x9000_00000-0x9800_00000/0XD000_0000--0XD800_0000.
There are nor flashes that are bigger in size than the memory size
supported by the controller: Micron MT25QL02G (256 MB).
Check if the address exceeds the MMIO window size. An improvement
would be to add support for regular SPI mode and fall back to it
when the flash memories overrun the controller's memory space.
Fixes: 24c8ff4684 ("spi: Add Atmel QuadSPI driver")
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
At present dm/device.h includes the linux-compatible features. This
requires including linux/compat.h which in turn includes a lot of headers.
One of these is malloc.h which we thus end up including in every file in
U-Boot. Apart from the inefficiency of this, it is problematic for sandbox
which needs to use the system malloc() in some files.
Move the compatibility features into a separate header file.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present devres.h is included in all files that include dm.h but few
make use of it. Also this pulls in linux/compat which adds several more
headers. Drop the automatic inclusion and require files to include devres
themselves. This provides a good indication of which files use devres.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
Backport the driver from linux v5.1-rc5 and adapt it for u-boot.
Tested on sama5d2_xplained Rev B with mx25l25635e spi-nor flash.
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
