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Published 20 hours ago • verified publisher icon openbmc

FMC Flash controller settings of the second chip for fast reads

Open legoater opened this issue 7 years ago • 2 comments

The Linux driver does not seem to tune the FMC Flash controller settings of the second chip for fast reads.

legoater avatar Feb 21 '18 05:02 legoater

The tuning of the first chip of the FMC controller is done by the bootloader U-Boot, using the DMA registers. Nothing is done for the second chip.

Tuning for the SPI controller chips are done by the Linux driver.

legoater avatar Feb 21 '18 06:02 legoater

This patch https://github.com/legoater/linux/commit/2a3cc7822f90406715d4c3601403aa733b993dfe looks like a good option. It needs some testing on a witherspoon system.

legoater avatar Feb 21 '18 07:02 legoater