CLK_DFSBYPASS_CONTR
rc = amd_smn_read(0, CLK_DFSBYPASS_CONTR, &data);
rc = amd_smn_write(0, CLK_DFSBYPASS_CONTR, data | EXIT_DPF_BYPASS_0);
rc = amd_smn_write(0, CLK_DFSBYPASS_CONTR, data | EXIT_DPF_BYPASS_1);