VF610_CLK_QSPI0_SEL
clk[VF610_CLK_QSPI0_SEL] = imx_clk_mux("qspi0_sel", CCM_CSCMR1, 22, 2, qspi_sels, 4);
clk_set_parent(clk[VF610_CLK_QSPI0_SEL], clk[VF610_CLK_PLL1_PFD4]);
clk_set_rate(clk[VF610_CLK_QSPI0_X4_DIV], clk_get_rate(clk[VF610_CLK_QSPI0_SEL]) / 2);