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(parent: 2d9dc8f) | patch
liblitesdcard/sdcard: (temporarily) slow down SDCARD_CLK_FREQ to 25MHz
authorGabriel Somlo <gsomlo@gmail.com>
Mon, 3 Aug 2020 16:03:39 +0000 (12:03 -0400)
committerGabriel Somlo <gsomlo@gmail.com>
Mon, 3 Aug 2020 20:14:11 +0000 (16:14 -0400)
commitdf3428be07ff82aceac67297e38793e56641f206
treeafd334831663d6e44b5bd0274e31bd1336dea9a1tree
parent2d9dc8f9396b9feefed1bf23dc8ecda5c4d0f5e1commit | diff
liblitesdcard/sdcard: (temporarily) slow down SDCARD_CLK_FREQ to 25MHz

Rocket's DMA slave interface (and/or internal routing) currently
appears unable to route DMA writes from LiteSDCard at frequencies
above 25MHz (as tested on nexys4ddr, with Rocket, at 75MHz main
system clock frequency).

Signed-off-by: Gabriel Somlo <gsomlo@gmail.com>
litex/soc/software/liblitesdcard/sdcard.c diff | blob | history