get_clk_info
hwa742.extif->get_clk_info(&hwa742.extif_clk_period, &max_clk_div);
void (*get_clk_info) (u32 *clk_period, u32 *max_clk_div);
.get_clk_info = sossi_get_clk_info,
pre_div = get_clk_info(rt5682s->sysclk, rt5682s->lrck[id]);