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clock/gowin_gw1n: Add get_vco/pfd_freq_range methods and switch to it.

This commit is contained in:
Florent Kermarrec 2022-06-03 11:53:55 +02:00
parent f33ea63278
commit f0ea2cb0fa
1 changed files with 31 additions and 14 deletions
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45
litex/soc/cores/clock/gowin_gw1n.py
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@ -64,27 +64,44 @@ class GW1NPLL(Module):
self.clkouts = {}
self.config = {}
self.params = {}
self.vco_freq_range = self.get_vco_freq_range(device)
self.pfd_freq_range = self.get_pfd_freq_range(device)
@staticmethod
def get_vco_freq_range(device):
vco_freq_range = None
if device.startswith('GW1NS'):
if 'C7/I6' in device or 'C6/I5' in device:
self.vco_freq_range = (600e6, 1200e6) # datasheet says (400, 1200) but compiler enforces (600, 1200)
self.pfd_freq_range = (3e6, 400e6)
vco_freq_range = (600e6, 1200e6) # datasheet says (400, 1200) but compiler enforces (600, 1200)
elif 'C5/I4' in device:
self.vco_freq_range = (320e6, 960e6) # datasheet values, not tested
self.pfd_freq_range = (3e6, 320e6)
vco_freq_range = (320e6, 960e6) # datasheet values, not tested
elif device.startswith('GW1N-1S'):
self.vco_freq_range = (400e6, 1200e6)
self.pfd_freq_range = (3e6, 400e6) # not verified: not found in the datasheet
vco_freq_range = (400e6, 1200e6)
elif device.startswith('GW1N-') or device.startswith('GW1NR-'):
self.vco_freq_range = (400e6, 900e6)
self.pfd_freq_range = (3e6, 400e6) # not verified: not found in the datasheet
vco_freq_range = (400e6, 900e6)
elif device.startswith('GW2A-'):
self.vco_freq_range = (500e6, 1250e6) # datasheet values
self.pfd_freq_range = (3e6, 500e6) # datasheet values
vco_freq_range = (500e6, 1250e6) # datasheet values
if vco_freq_range is None:
raise ValueError(f"Unsupported device {device}.")
return vco_freq_range
try:
self.vco_freq_range
except NameError:
self.logger.error('Unknown device name')
@staticmethod
def get_pfd_freq_range(device):
pfd_freq_range = None
if device.startswith('GW1NS'):
if 'C7/I6' in device or 'C6/I5' in device:
pfd_freq_range = (3e6, 400e6)
elif 'C5/I4' in device:
pfd_freq_range = (3e6, 320e6)
elif device.startswith('GW1N-1S'):
pfd_freq_range = (3e6, 400e6) # not verified: not found in the datasheet
elif device.startswith('GW1N-') or device.startswith('GW1NR-'):
pfd_freq_range = (3e6, 400e6) # not verified: not found in the datasheet
elif device.startswith('GW2A-'):
pfd_freq_range = (3e6, 500e6) # datasheet values
if pfd_freq_range is None:
raise ValueError(f"Unsupported device {device}.")
return pfd_freq_range
def register_clkin(self, clkin, freq):
self.clkin = Signal()