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1bitsquared_icebreaker: Switch to LiteSPI (with integration now done by LiteX). 

Keep the old add_spi_flash call commented for now just in case we need to compare/test it.
This commit is contained in:
Florent Kermarrec 2021-07-27 19:23:26 +02:00
parent 533d25e845
commit 959780f372
1 changed files with 4 additions and 12 deletions
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16
litex_boards/targets/1bitsquared_icebreaker.py
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@ -97,18 +97,10 @@ class BaseSoC(SoCCore):
# SPI Flash --------------------------------------------------------------------------------
use_litespi = False
if use_litespi:
from litespi.modules import W25Q128JV
from litespi.opcodes import SpiNorFlashOpCodes as Codes
from litespi.phy.generic import LiteSPIPHY
from litespi import LiteSPI
self.submodules.spiflash_phy = LiteSPIPHY(platform.request("spiflash4x"), W25Q128JV(Codes.READ_1_1_4))
self.submodules.spiflash_mmap = LiteSPI(self.spiflash_phy, clk_freq=sys_clk_freq, master_fifo_depth=1, mmap_endianness=self.cpu.endianness)
spiflash_region = SoCRegion(origin=self.mem_map.get("spiflash", None), size=W25Q128JV.total_size, cached=False)
self.bus.add_slave(name="spiflash", slave=self.spiflash_mmap.bus, region=spiflash_region)
else:
self.add_spi_flash(mode="1x", dummy_cycles=8)
from litespi.modules import W25Q128JV
from litespi.opcodes import SpiNorFlashOpCodes as Codes
self.add_spi_flash(mode="4x", module=W25Q128JV(Codes.READ_1_1_4), with_master=False)
#self.add_spi_flash(mode="1x", dummy_cycles=8) # LiteX SPI Flash Core.
# Add ROM linker region --------------------------------------------------------------------
self.bus.add_region("rom", SoCRegion(