ref_cpu           114 drivers/clk/mxs/clk-imx23.c 	clks[ref_cpu] = mxs_clk_ref("ref_cpu", "pll", FRAC, 0);
ref_cpu           171 drivers/clk/mxs/clk-imx28.c 	clks[ref_cpu] = mxs_clk_ref("ref_cpu", "pll0", FRAC0, 0);