Merge pull request #1553 from stone3311/master

clock/intel: Add Stratix V PLL parameters

litex/soc/cores/clock/intel_stratix5.py

@@ -0,0 +1,43 @@
+#
+# This file is part of LiteX.
+#
+# Copyright (c) 2023 stone3311 <fenstein12@googlemail.com>
+# SPDX-License-Identifier: BSD-2-Clause
+
+from migen import *
+
+from litex.soc.cores.clock.common import *
+from litex.soc.cores.clock.intel_common import *
+
+# Intel / StratixV --------------------------------------------------------------------------------
+
+class StratixVPLL(IntelClocking):
+    nclkouts_max   = 18
+    n_div_range    = (1, 512+1)
+    m_div_range    = (1, 512+1)
+    c_div_range    = (1, 512+1)
+    clkin_pfd_freq_range  = (5e6, 325e6)
+    def __init__(self, speedgrade="-C4"):
+        self.logger = logging.getLogger("StratixVPLL")
+        self.logger.info("Creating StratixVPLL, {}.".format(colorer("speedgrade {}".format(speedgrade))))
+        IntelClocking.__init__(self)
+
+        if speedgrade == "-C4" or speedgrade == "-I4":
+            self.clkin_freq_range =   (5e6,  650e6)
+            self.vco_freq_range   = (600e6, 1300e6)
+        else:
+            self.clkin_freq_range =   (5e6,  800e6)
+            self.vco_freq_range   = (600e6, 1600e6)
+
+        self.clko_freq_range = {
+            "-C1"   : (5e6, 717e6),
+            "-C2"   : (5e6, 717e6),
+            "-C2L"  : (5e6, 717e6),
+            "-I2"   : (5e6, 717e6),
+            "-I2L"  : (5e6, 717e6),
+            "-C3"   : (5e6, 650e6),
+            "-I3"   : (5e6, 650e6),
+            "-I3L"  : (5e6, 650e6),
+            "-C4"   : (5e6, 580e6),
+            "-I4"   : (5e6, 580e6),
+        }[speedgrade]