3 Commits

Author	SHA1	Message	Date
Ivan Bornyakov	1da53d23a4	fpga: microchip-spi: move SPI I/O buffers out of stack ... As spi-summary doc says: > I/O buffers use the usual Linux rules, and must be DMA-safe. > You'd normally allocate them from the heap or free page pool. > Don't use the stack, or anything that's declared "static". Replace spi_write() with spi_write_then_read(), which is dma-safe for on-stack buffers. Use cacheline aligned buffers for transfers used in spi_sync_transfer(). Although everything works OK with stack-located I/O buffers, better follow the doc to be safe. Fixes: 5f8d4a9008 ("fpga: microchip-spi: add Microchip MPF FPGA manager") Signed-off-by: Ivan Bornyakov <i.bornyakov@metrotek.ru> Acked-by: Conor Dooley <conor.dooley@microchip.com> Acked-by: Xu Yilun <yilun.xu@intel.com> Link: https://lore.kernel.org/r/20221230092922.18822-2-i.bornyakov@metrotek.ru Signed-off-by: Xu Yilun <yilun.xu@intel.com>	2023-01-28 23:20:24 +08:00
Conor Dooley	2a0805f55b	fpga: microchip-spi: add missing module author entry ... Add the missing MODULE_AUTHOR entry for the Microchip spi-slave FPGA programming driver. Signed-off-by: Conor Dooley <conor.dooley@microchip.com> Acked-by: Ivan Bornyakov <i.bornyakov@metrotek.ru> Reviewed-by: Tom Rix <trix@redhat.com> Acked-by: Xu Yilun <yilun.xu@intel.com> Link: https://lore.kernel.org/r/20220728075012.3136914-1-conor.dooley@microchip.com Signed-off-by: Xu Yilun <yilun.xu@intel.com>	2022-08-15 11:38:57 +08:00
Ivan Bornyakov	5f8d4a9008	fpga: microchip-spi: add Microchip MPF FPGA manager ... Add support to the FPGA manager for programming Microchip Polarfire FPGAs over slave SPI interface with .dat formatted bitsream image. Signed-off-by: Ivan Bornyakov <i.bornyakov@metrotek.ru> Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Tested-by: Conor Dooley <conor.dooley@microchip.com> Acked-by: Xu Yilun <yilun.xu@intel.com> Link: https://lore.kernel.org/r/20220623163248.3672-4-i.bornyakov@metrotek.ru Signed-off-by: Xu Yilun <yilun.xu@intel.com>	2022-06-24 12:12:31 +08:00