sky2_clk2us
ecmd->tx_coalesce_usecs = sky2_clk2us(hw, clks);
ecmd->rx_coalesce_usecs = sky2_clk2us(hw, clks);
ecmd->rx_coalesce_usecs_irq = sky2_clk2us(hw, clks);
const u32 tmax = sky2_clk2us(hw, 0x0ffffff);