This is a basic SDIO driver for the mimxrt port, that was added mainly to
support the CYW43 WiFi driver, and as such it only supports the commands
required by the CYW43 driver (but more commands can be added easily). The
driver performs non-blocking DMA transfers, and can detect and recover from
errors.
Note: because the mimxrt port is missing static alternate functions, named
pins and other pin related functions, currently the alternate functions for
USDHC 1 and 2 are hard-coded in the driver.
Signed-off-by: iabdalkader <i.abdalkader@gmail.com>
iabdalkader