drivers: mspi: mspi_dw: Add DMA support

Initial DMA support. DMA supports implementation of SSI IP but using vendor
specific DMA in the wrapper. The setup of the DMA is done in
mspi_dw_vendor_specific.h.

Signed-off-by: David Jewsbury <[email protected]>

Author: Hi-Im-David

doc/hardware/peripherals/mspi.rst

@@ -194,6 +194,7 @@ Related configuration options:
 * :kconfig:option:`CONFIG_MSPI_TIMING`
 * :kconfig:option:`CONFIG_MSPI_INIT_PRIORITY`
 * :kconfig:option:`CONFIG_MSPI_COMPLETION_TIMEOUT_TOLERANCE`
+* :kconfig:option:`CONFIG_MSPI_DMA`
 
 API Reference
 *************

drivers/mspi/Kconfig

@@ -55,6 +55,12 @@ config MSPI_TIMING
 	  Enables mspi_timing_config calls in device drivers for those
 	  controllers that need this to proper function at high frequencies.
 
+config MSPI_DMA
+	bool "DMA support"
+	help
+	  Enables DMA capabilities, depending on the driver and hardware it
+	  runs on.
+
 module = MSPI
 module-str = mspi
 source "subsys/logging/Kconfig.template.log_config"