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669104d841
Setting up a DMA transfer can take longer than sending out a buffer byte by byte if the buffer is small. DMA only shows advantages for large buffers, using it for every transfer will cause a net slowdown. Since we did not come up with a good way to determine the treshold based on the SPI frequency, just use a fixed buffer for now so that DMA can be used without slowing things down overall. |
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| .. | ||
| Kconfig.spi | ||
| Makefile | ||
| pm.c | ||