| ## Copyright lowRISC contributors. |
| ## Licensed under the Apache License, Version 2.0, see LICENSE for details. |
| ## SPDX-License-Identifier: Apache-2.0 |
| |
| ## Clock Signal |
| create_clock -add -name sys_clk_pin -period 10.00 -waveform {0 5} [get_ports IO_CLK] |
| |
| ## Clock Domain Crossings |
| set clks_10_unbuf [get_clocks -of_objects [get_pin clkgen/pll/CLKOUT0]] |
| set clks_48_unbuf [get_clocks -of_objects [get_pin clkgen/pll/CLKOUT1]] |
| set clks_aon_unbuf [get_clocks -of_objects [get_pin clkgen/pll/CLKOUT2]] |
| |
| ## Divided clock |
| ## This is not really recommended per Vivado's guidelines, but hopefully these clocks are slow enough and their |
| ## destination flops few enough. |
| |
| set u_pll clkgen/pll |
| set u_div2 top_*/u_clkmgr_aon/u_no_scan_io_div2_div |
| create_generated_clock -name clk_io_div2 -source [get_pin ${u_pll}/CLKOUT0] -divide_by 2 [get_pin ${u_div2}/u_clk_div_buf/gen_xilinx.u_impl_xilinx/bufg_i/O] |
| |
| set u_div4 top_*/u_clkmgr_aon/u_no_scan_io_div4_div |
| create_generated_clock -name clk_io_div4 -source [get_pin ${u_pll}/CLKOUT0] -divide_by 4 [get_pin ${u_div4}/u_clk_div_buf/gen_xilinx.u_impl_xilinx/bufg_i/O] |
| |
| ## JTAG and SPI clocks |
| create_clock -add -name lc_jtag_tck -period 100.00 -waveform {0 5} [get_pin top_*/u_pinmux_aon/u_pinmux_strap_sampling/u_pinmux_jtag_buf_lc/prim_clock_buf_tck/gen_xilinx.u_impl_xilinx/bufg_i/O] |
| create_clock -add -name rv_jtag_tck -period 100.00 -waveform {0 5} [get_pin top_*/u_pinmux_aon/u_pinmux_strap_sampling/u_pinmux_jtag_buf_rv/prim_clock_buf_tck/gen_xilinx.u_impl_xilinx/bufg_i/O] |
| create_clock -add -name clk_spi_in -period 100.00 -waveform {0 5} [get_pin top_*/u_spi_device/u_clk_spi_in_buf/gen_xilinx.u_impl_xilinx/bufg_i/O] |
| create_clock -add -name clk_spi_out -period 100.00 -waveform {0 5} [get_pin top_*/u_spi_device/u_clk_spi_out_buf/gen_xilinx.u_impl_xilinx/bufg_i/O] |
| |
| set_clock_groups -group ${clks_10_unbuf} -group ${clks_48_unbuf} -group ${clks_aon_unbuf} -group clk_io_div2 -group clk_io_div4 -group lc_jtag_tck -group rv_jtag_tck -group clk_spi_in -group clk_spi_out -asynchronous |
| |
