This patch introduces initial support for the Cadence xSPI controller in U-Boot.
The driver is ported from the Linux kernel implementation and supports three operating modes: ACMD, STIG, and Direct. Currently, only the STIG mode is enabled. The driver has been functionally verified on the Intel Simics platform and is intended for evaluation and experimental use at this stage. --- Changes in v2: - Squashed the Kconfig and Makefile enablement patch into the main driver commit, as requested by the maintainer. - No functional or behavioral changes to the driver. Boon Khai Ng (1): spi: cadence: Add driver for xSPI drivers/spi/Kconfig | 15 ++ drivers/spi/Makefile | 1 + drivers/spi/cadence_xspi.c | 449 +++++++++++++++++++++++++++++++++++++ drivers/spi/cadence_xspi.h | 226 +++++++++++++++++++ 4 files changed, 691 insertions(+) create mode 100644 drivers/spi/cadence_xspi.c create mode 100644 drivers/spi/cadence_xspi.h -- 2.43.7
