cyan_skillfish_get_current_clk_freq
ret = cyan_skillfish_get_current_clk_freq(smu, clk_type, &cur_value);
ret = cyan_skillfish_get_current_clk_freq(smu, clk_type, &cur_value);
ret = cyan_skillfish_get_current_clk_freq(smu, clk_type, &low);