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bed97e3578
Add device tree bindings for the STM32 OSPI controller.
Main features of the Octo-SPI controller :
- support sNOR / sNAND / HyperRAM™ and HyperFlash™ devices.
- Three functional modes: indirect, automatic-status polling,
memory-mapped.
- Up to 4 Gbytes of external memory can be addressed in indirect
mode (per physical port and per CS), and up to 256 Mbytes in
memory-mapped mode (combined for both physical ports and per CS).
- Single-, dual-, quad-, and octal-SPI communication.
- Dual-quad communication.
- Single data rate (SDR) and double transfer rate (DTR).
- Maximum target frequency is 133 MHz for SDR and 133 MHz for DTR.
- Data strobe support.
- DMA channel for indirect mode.
- Double CS mapping that allows two external flash devices to be
addressed with a single OCTOSPI controller mapped on a single
OCTOSPI port.
Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20250219080059.367045-2-patrice.chotard@foss.st.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Linux kernel
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