Loongson platform support spi hardware controller and this series patch was to add spi driver and binding support. Change in v2: 1. This [PATCH v2 1/2] dt-bindings patch need depend on clk patch: https:// lore.kernel.org/all/20230307115022.12846-1-zhuyinbo@xxxxxxxxxxx/ 2. Remove the clock-names in spi yaml file. 3. Add "loongson,ls7a-spi" compatible in spi yaml file. 4. Add an || COMPILE_TEST and drop && PCI then add some CONFIG_PCI macro to limit some pci code. 5. Make the spi driver top code comment block that use C++ style. 6. Drop spi->max_speed_hz. 7. Add a spin_lock for loongson_spi_setup. 8. Add a timeout and cpu_relax() in loongson_spi_write_read_8bit. 9. Add spi_transfer_one and drop transfer and rework entire spi driver that include some necessary changes. 10. Use module_init replace subsys_initcall. 11. About PM interface that I don't find any issue so I don't add any changes. Yinbo Zhu (2): dt-bindings: spi: add loongson spi spi: loongson: add bus driver for the loongson spi controller .../bindings/spi/loongson,ls-spi.yaml | 44 ++ MAINTAINERS | 7 + drivers/spi/Kconfig | 10 + drivers/spi/Makefile | 1 + drivers/spi/spi-loongson.c | 459 ++++++++++++++++++ 5 files changed, 521 insertions(+) -- 2.20.1
