armpll
cpu_parents[0] = clk_output_name[armpll];
cpu_parents[1] = clk_output_name[armpll];
periph_parents[2] = clk_output_name[armpll];
clks[armpll] = clk_register_mux(NULL, clk_output_name[armpll],
struct clk *armpll = clk_get_parent(cpu_clk);
ret = clk_set_rate(armpll, freq_hz);
clk_set_parent(cpu_clk, armpll);
ret = clk_set_parent(cpu_clk, armpll);
clk_set_rate(armpll, pre_freq_hz);
clk_set_parent(cpu_clk, armpll);