nv_clk_src_disp
case nv_clk_src_disp:
(ret = calc_clk(clk, cstate, 0x20, 0x0000, nv_clk_src_disp)) ||
prog_clk(clk, 0x20, nv_clk_src_disp);
{ nv_clk_src_disp , 0x04 },