ISP_CLK_CAM_MCLK
r = clk_set_rate(isp->clock[ISP_CLK_CAM_MCLK], CM_CAM_MCLK_HZ);
r = clk_prepare_enable(isp->clock[ISP_CLK_CAM_MCLK]);
rate = clk_get_rate(isp->clock[ISP_CLK_CAM_MCLK]);
clk_disable_unprepare(isp->clock[ISP_CLK_CAM_MCLK]);
clk_disable_unprepare(isp->clock[ISP_CLK_CAM_MCLK]);