Illegal argument of type real in math function 'clog2()', expected integral type (Vivado 2022.1)

[Tux3]

Hi,

Running synthesis with Vivado 2022.1 I get the following error log:

WARNING: [Synth 8-9887] parameter declaration becomes local in 'ip_mux' with formal parameter declaration list [/source/path/rtl/ip_mux.v:118]
ERROR: [Synth 8-9566] illegal argument of type real in math function 'clog2()', expected integral type [/source/path/rtl/eth_phy_10g_rx_ber_mon.v:62]
WARNING: [Synth 8-9887] parameter declaration becomes local in 'eth_phy_10g_rx_ber_mon' with formal parameter declaration list [/source/path/rtl/eth_phy_10g_rx_ber_mon.v:62]
Failed to read verilog '/source/path/rtl/eth_phy_10g_rx_ber_mon.v'

It doesn't seem to like this in eth_phy_10g_rx_ber_mon.v:

// ...
module eth_phy_10g_rx_ber_mon #
(
    parameter HDR_WIDTH = 2,
    parameter COUNT_125US = 125000/6.4
)
(
// ...
parameter COUNT_WIDTH = $clog2(COUNT_125US);
// ...

[david-sawatzke]

As a workaround I've added $rtoi(COUNT125US) and it builds