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spi: stm32: Add OSPI driver

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Add STM32 OSPI driver, it supports :
  - support sNOR / sNAND devices.
  - Three functional modes: indirect, automatic-status polling,
    memory-mapped.
  - Single-, dual-, quad-, and octal-SPI communication.
  - Dual-quad communication.
  - Single data rate (SDR).
  - DMA channel for indirect mode.

Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Link: https://patch.msgid.link/20250219080059.367045-3-patrice.chotard@foss.st.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Patrice Chotard 2025-02-19 09:00:53 +01:00 • committed by Mark Brown
parent bed97e3578
commit 79b8a705e2
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
3 changed files with 1076 additions and 0 deletions
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10
drivers/spi/Kconfig
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@ -1045,6 +1045,16 @@ config SPI_STM32
is not available, the driver automatically falls back to is not available, the driver automatically falls back to
PIO mode. PIO mode.
config SPI_STM32_OSPI
tristate "STMicroelectronics STM32 OCTO SPI controller"
depends on ARCH_STM32 || COMPILE_TEST
depends on OF
depends on SPI_MEM
help
This enables support for the Octo SPI controller in master mode.
This driver does not support generic SPI. The implementation only
supports spi-mem interface.
config SPI_STM32_QSPI config SPI_STM32_QSPI
tristate "STMicroelectronics STM32 QUAD SPI controller" tristate "STMicroelectronics STM32 QUAD SPI controller"
depends on ARCH_STM32 || COMPILE_TEST depends on ARCH_STM32 || COMPILE_TEST

1
drivers/spi/Makefile
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@ -137,6 +137,7 @@ obj-$(CONFIG_SPI_SN_F_OSPI) += spi-sn-f-ospi.o
obj-$(CONFIG_SPI_SPRD) += spi-sprd.o obj-$(CONFIG_SPI_SPRD) += spi-sprd.o
obj-$(CONFIG_SPI_SPRD_ADI) += spi-sprd-adi.o obj-$(CONFIG_SPI_SPRD_ADI) += spi-sprd-adi.o
obj-$(CONFIG_SPI_STM32) += spi-stm32.o obj-$(CONFIG_SPI_STM32) += spi-stm32.o
obj-$(CONFIG_SPI_STM32_OSPI) += spi-stm32-ospi.o
obj-$(CONFIG_SPI_STM32_QSPI) += spi-stm32-qspi.o obj-$(CONFIG_SPI_STM32_QSPI) += spi-stm32-qspi.o
obj-$(CONFIG_SPI_ST_SSC4) += spi-st-ssc4.o obj-$(CONFIG_SPI_ST_SSC4) += spi-st-ssc4.o
obj-$(CONFIG_SPI_SUN4I) += spi-sun4i.o obj-$(CONFIG_SPI_SUN4I) += spi-sun4i.o

1065
drivers/spi/spi-stm32-ospi.c Normal file
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