1. Kernel Patch
0001-enable-spi-dma.patch
0002-Optimize-SPI-DMA-performance.patch
2. Test code
Create a char device to test the spi transfer, the driver is spi_generic.c, Makefile
Application code to write the SPI char device is spi_test.c
3. Note
These patches only support SPI DMA write. For SPI read, please use PIO mode.
The DMA test port is SPI1, which is same as cpld_spi port. Since cpld_spi is using poll mode, it cannot work with pio/dma mode at the same time. So should not add "ip=dhcp" in u-boot command to enable network.
Original Attachment has been moved to: 8-0001enablespidma.patch
Original Attachment has been moved to: 12-spi_test.c
Original Attachment has been moved to: 10-spi_generic.c
Original Attachment has been moved to: 9-0002OptimizeSPIDMAperformance.patch
