DEFINE_CLOCK(csi_clk, 0, CCM_CGCR1, 4, get_rate_csi, NULL, &csi_per_clk);
DEFINE_CLOCK(can1_clk, 0, CCM_CGCR1, 2, get_rate_ipg, NULL, NULL);
DEFINE_CLOCK(can2_clk, 1, CCM_CGCR1, 3, get_rate_ipg, NULL, NULL);
DEFINE_CLOCK(csi_clk, 0, CCM_CGCR1, 4, get_rate_csi, NULL, &csi_per_clk);
DEFINE_CLOCK(can1_clk, 0, CCM_CGCR1, 2, get_rate_ipg, NULL, NULL);
DEFINE_CLOCK(can2_clk, 1, CCM_CGCR1, 3, get_rate_ipg, NULL, NULL);