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drivers: flash: octo spi for stm32 with DMA

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Introducing the dma transfer (also through dmamux)
to transfer data to/from the NOR octo-flash
With a DMAMUX, the DMA channel is given by the DTS.
Note that STM32U5X does not support DMA here.

Signed-off-by: Francois Ramu <francois.ramu@st.com>
This commit is contained in:
Francois Ramu 2022-05-06 09:10:47 +02:00 • committed by Fabio Baltieri
commit b6ee1dfe6e
2 changed files with 165 additions and 1 deletions
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6
drivers/flash/Kconfig.stm32_ospi
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@ -3,6 +3,9 @@
# Copyright (c) 2022 STMicroelectronics
# SPDX-License-Identifier: Apache-2.0
DT_STM32_OCTOSPI_1_HAS_DMA := $(dt_nodelabel_has_prop,octospi1,dmas)
DT_STM32_OCTOSPI_2_HAS_DMA := $(dt_nodelabel_has_prop,octospi2,dmas)
config FLASH_STM32_OSPI
bool "STM32 Octo SPI Flash driver"
default y
@ -14,5 +17,8 @@ config FLASH_STM32_OSPI
select FLASH_JESD216
select FLASH_PAGE_LAYOUT
select FLASH_HAS_PAGE_LAYOUT
select DMA if $(DT_STM32_OCTOSPI_1_HAS_DMA) || $(DT_STM32_OCTOSPI_2_HAS_DMA)
select USE_STM32_HAL_DMA if $(DT_STM32_OCTOSPI_1_HAS_DMA) || \
$(DT_STM32_OCTOSPI_2_HAS_DMA)
help
Enable OSPI-NOR support on the STM32 family of processors.