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caravel-mpw7-20221125
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litedram-update
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3 Commits (9a4f0c18e11f0c976b1a8a31ba124d822865193e)

Author SHA1 Message Date
Matt Johnston 89d8cf0788 Regenerate litedram with updated sdram init 
Using

litedram c770dd62edc281c370f9e2c694fe4ac1525a0b4a
litex e570b612b2a9d8f8d2002d79497bda0dc35b936a

Signed-off-by: Matt Johnston <matt@codeconstruct.com.au>
 3 years ago
Anton Blanchard aa1d2b16d7 litedram: Regenerate 
Regenerate from upstream litex. Something in the update has improved
memory read and write performance quite a lot on my Nexys Video:

Before:

  Write speed: 83.2MiB/s
   Read speed: 140.4MiB/s

After:

  Write speed: 352.1MiB/s
   Read speed: 218.5MiB/s

Signed-off-by: Anton Blanchard <anton@linux.ibm.com>
 4 years ago
Matt Johnston 8901e84d8d litedram: Add orangecrab-85-0.2 target 
Parameters are based on
https://github.com/gregdavill/OrangeCrab-test-sw/blob/main/hw/OrangeCrab-bitstream.py
and litex-boards orangecrab.py

rtt_nom and cmd_delay are overridden for OrangeCrab, we do the same here.

Generated with litedram and litex
62abf9c ("litedram_gen: Add block_until_ready port parameter to control blocking behaviour.")
add2746a ("tools/litex_cli: Rename wb to bus.")

Signed-off-by: Matt Johnston <matt@codeconstruct.com.au>
 4 years ago