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litescope: use CRG from Migen

This commit is contained in:
Florent Kermarrec 2015-03-17 11:52:54 +01:00
parent b2f32ad124
commit a874f85854
1 changed files with 2 additions and 16 deletions
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18
misoclib/tools/litescope/example_designs/targets/simple.py
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@ -1,4 +1,5 @@
from migen.bank.description import * from migen.bank.description import *
from migen.genlib.io import CRG
from misoclib.soc import SoC from misoclib.soc import SoC
from misoclib.tools.litescope.common import * from misoclib.tools.litescope.common import *
@ -7,20 +8,6 @@ from misoclib.tools.litescope.frontend.io import LiteScopeIO
from misoclib.tools.litescope.frontend.la import LiteScopeLA from misoclib.tools.litescope.frontend.la import LiteScopeLA
from misoclib.tools.litescope.core.port import LiteScopeTerm from misoclib.tools.litescope.core.port import LiteScopeTerm
class _CRG(Module):
def __init__(self, clk_in):
self.clock_domains.cd_sys = ClockDomain()
self.clock_domains.cd_por = ClockDomain(reset_less=True)
# Power on Reset (vendor agnostic)
rst_n = Signal()
self.sync.por += rst_n.eq(1)
self.comb += [
self.cd_sys.clk.eq(clk_in),
self.cd_por.clk.eq(clk_in),
self.cd_sys.rst.eq(~rst_n)
]
class LiteScopeSoC(SoC, AutoCSR): class LiteScopeSoC(SoC, AutoCSR):
csr_map = { csr_map = {
"io": 16, "io": 16,
@ -37,8 +24,7 @@ class LiteScopeSoC(SoC, AutoCSR):
with_identifier=True, with_identifier=True,
with_timer=False with_timer=False
) )
clk_in = platform.request(platform.default_clk_name) self.submodules.crg = CRG(platform.request(platform.default_clk_name))
self.submodules.crg = _CRG(clk_in if not hasattr(clk_in, "p") else clk_in.p)
self.submodules.io = LiteScopeIO(8) self.submodules.io = LiteScopeIO(8)
for i in range(8): for i in range(8):