From: Jan Kowalewski Date: Fri, 13 Nov 2020 12:58:11 +0000 (+0100) Subject: vendor.quicklogic: enable SoC clock configuration X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=a9efbc33d7307cf8c0de158e445190ae950f047f;p=nmigen.git vendor.quicklogic: enable SoC clock configuration Signed-off-by: Jan Kowalewski --- diff --git a/nmigen/vendor/quicklogic.py b/nmigen/vendor/quicklogic.py index bc7f9a2..8554fff 100644 --- a/nmigen/vendor/quicklogic.py +++ b/nmigen/vendor/quicklogic.py @@ -129,11 +129,19 @@ class QuicklogicPlatform(TemplatedPlatform): python3 -m quicklogic_fasm.bitstream_to_openocd {{name}}.bit {{name}}.openocd + --osc-freq {{platform.osc_freq}} + --fpga-clk-divider {{platform.osc_div}} """, ] # Common logic + @property + def default_clk_constraint(self): + if self.default_clk == "sys_clk0": + return Clock(self.osc_freq / self.osc_div) + return super().default_clk_constraint + def add_clock_constraint(self, clock, frequency): super().add_clock_constraint(clock, frequency) clock.attrs["keep"] = "TRUE" @@ -142,6 +150,20 @@ class QuicklogicPlatform(TemplatedPlatform): if name == "sync" and self.default_clk is not None: m = Module() if self.default_clk == "sys_clk0": + if not hasattr(self, "osc_div"): + raise ValueError("OSC divider (osc_div) must be an integer between 2 " + "and 512") + if not isinstance(self.osc_div, int) or self.osc_div < 2 or self.osc_div > 512: + raise ValueError("OSC divider (osc_div) must be an integer between 2 " + "and 512, not {!r}" + .format(self.osc_div)) + if not hasattr(self, "osc_freq"): + raise ValueError("OSC frequency (osc_freq) must be an integer between 2100000 " + "and 80000000") + if not isinstance(self.osc_freq, int) or self.osc_freq < 2100000 or self.osc_freq > 80000000: + raise ValueError("OSC frequency (osc_freq) must be an integer between 2100000 " + "and 80000000, not {!r}" + .format(self.osc_freq)) clk_i = Signal() sys_clk0 = Signal() m.submodules += Instance("qlal4s3b_cell_macro",