463 	long xtal;  in radeon_probe_pll_params()  local
560 	xtal = vclk;  in radeon_probe_pll_params()
562 	if ((xtal > 26900) && (xtal < 27100))  in radeon_probe_pll_params()
563 		xtal = 2700;  in radeon_probe_pll_params()
564 	else if ((xtal > 14200) && (xtal < 14400))  in radeon_probe_pll_params()
565 		xtal = 1432;  in radeon_probe_pll_params()
566 	else if ((xtal > 29400) && (xtal < 29600))  in radeon_probe_pll_params()
567 		xtal = 2950;  in radeon_probe_pll_params()
569 		printk(KERN_WARNING "xtal calculation failed: %ld\n", xtal);  in radeon_probe_pll_params()
579 	sclk = round_div((2 * Ns * xtal), (2 * M));  in radeon_probe_pll_params()
580 	mclk = round_div((2 * Nm * xtal), (2 * M));  in radeon_probe_pll_params()
583 	rinfo->pll.ref_clk = xtal;  in radeon_probe_pll_params()