mx6_sabresd_board_init()

static void __init mx6_sabresd_board_init(void)  {          int i;          int ret;          struct clk *clko, *clko2;          struct clk *new_parent;          int rate;                //判断cpu类型和pad初始化;          if (cpu_is_mx6q())              mxc_iomux_v3_setup_multiple_pads(mx6q_sabresd_pads,                  ARRAY_SIZE(mx6q_sabresd_pads));          else if (cpu_is_mx6dl()) {              //配置管脚:i2c/i2s/......              mxc_iomux_v3_setup_multiple_pads(mx6dl_sabresd_pads,                  ARRAY_SIZE(mx6dl_sabresd_pads));          }            #ifdef CONFIG_FEC_1588          /* Set GPIO_16 input for IEEE-1588 ts_clk and RMII reference clock          * For MX6 GPR1 bit21 meaning:          * Bit21:       0 - GPIO_16 pad output          *              1 - GPIO_16 pad input          */           mxc_iomux_set_gpr_register(1, 21, 1, 1);      #endif                //(1)申请GPIO=>(2)设置GPIO=>(3)释放GPIO=>为了别人可以使用;类似互斥量;          gpio_request(SABRESD_PHY_RST, "phy_reset"); //申请一个引脚;"phy_reset"是描述;          gpio_direction_output(SABRESD_PHY_RST, 1);      //设置端口为输出；并设为高电平;          gpio_free(SABRESD_PHY_RST);                     //释放GPIO;                    gp_reg_id = sabresd_dvfscore_data.reg_id;          soc_reg_id = sabresd_dvfscore_data.soc_id;          pu_reg_id = sabresd_dvfscore_data.pu_id;          mx6q_sabresd_init_uart();                       //串口初始化;                /*          * MX6DL/Solo only supports single IPU          * The following codes are used to change ipu id          * and display id information for MX6DL/Solo. Then          * register 1 IPU device and up to 2 displays for          * MX6DL/Solo          */          if (cpu_is_mx6dl()) {              ldb_data.ipu_id = 0;              ldb_data.disp_id = 0;          //  hdmi_core_data.ipu_id = 0;          //  hdmi_core_data.disp_id = 0;          //  mipi_dsi_pdata.ipu_id = 0;          //  mipi_dsi_pdata.disp_id = 1;          }          imx6q_add_mxc_hdmi_core(&hdmi_core_data);                imx6q_add_ipuv3(0, &ipu_data[0]);          if (cpu_is_mx6q()) {              imx6q_add_ipuv3(1, &ipu_data[1]);              for (i = 0; i < 4 && i < ARRAY_SIZE(sabresd_fb_data); i++)                  imx6q_add_ipuv3fb(i, &sabresd_fb_data[i]);          } else              for (i = 0; i < 2 && i < ARRAY_SIZE(sabresd_fb_data); i++)                  imx6q_add_ipuv3fb(i, &sabresd_fb_data[i]);                imx6q_add_vdoa();          //imx6q_add_mipi_dsi(&mipi_dsi_pdata);          //imx6q_add_lcdif(&lcdif_data);          imx6q_add_ldb(&ldb_data);       //LVDS作为主显示;          imx6q_add_v4l2_output(0);          imx6q_add_v4l2_capture(0, &capture_data[0]);    //Camera接口          imx6q_add_v4l2_capture(1, &capture_data[1]);    //Camera接口          imx6q_add_mipi_csi2(&mipi_csi2_pdata);          imx6q_add_imx_snvs_rtc();                    //imx6q_add_flexcan(0, &mx6q_sabresd_flexcan0_pdata);                    imx6q_add_imx_caam();                if (board_is_mx6_reva()) {              strcpy(mxc_i2c0_board_info[0].type, "wm8958");              mxc_i2c0_board_info[0].platform_data = &wm8958_config_data;          } else {              //strcpy(mxc_i2c0_board_info[0].type, "wm8962");              //mxc_i2c0_board_info[0].platform_data = &wm8962_config_data;          }          //imx6q_add_device_gpio_leds();                imx6q_add_imx_i2c(0, &mx6q_sabresd_i2c_data);   //添加i2c platform devices;          imx6q_add_imx_i2c(1, &mx6q_sabresd_i2c_data);   //添加i2c platform devices;          imx6q_add_imx_i2c(2, &mx6q_sabresd_i2c_data);   //添加i2c platform devices;          i2c_register_board_info(0, mxc_i2c0_board_info,                  ARRAY_SIZE(mxc_i2c0_board_info));          i2c_register_board_info(1, mxc_i2c1_board_info,                  ARRAY_SIZE(mxc_i2c1_board_info));          i2c_register_board_info(2, mxc_i2c2_board_info,                  ARRAY_SIZE(mxc_i2c2_board_info));          /* SPI */          //imx6q_add_ecspi(0, &mx6q_sabresd_spi_data);          //spi_device_init();                imx6q_add_mxc_hdmi(&hdmi_data);                imx6q_add_anatop_thermal_imx(1, &mx6q_sabresd_anatop_thermal_data);          imx6_init_fec(fec_data);          imx6q_add_pm_imx(0, &mx6q_sabresd_pm_data);                /* Move sd4 to first because sd4 connect to emmc.            Mfgtools want emmc is mmcblk0 and other sd card is mmcblk1.         */          imx6q_add_sdhci_usdhc_imx(3, &mx6q_sabresd_sd4_data);          imx6q_add_sdhci_usdhc_imx(2, &mx6q_sabresd_sd3_data);          imx6q_add_sdhci_usdhc_imx(1, &mx6q_sabresd_sd2_data);          imx_add_viv_gpu(&imx6_gpu_data, &imx6q_gpu_pdata);          imx6q_sabresd_init_usb();                imx6q_add_vpu();          imx6q_init_audio();          platform_device_register(&sabresd_vmmc_reg_devices);          imx_asrc_data.asrc_core_clk = clk_get(NULL, "asrc_clk");          imx_asrc_data.asrc_audio_clk = clk_get(NULL, "asrc_serial_clk");          imx6q_add_asrc(&imx_asrc_data);                imx6q_add_mxc_pwm(0);       //增加pwm0          //imx6q_add_mxc_pwm(1);          //imx6q_add_mxc_pwm(2);          //imx6q_add_mxc_pwm(3);          //pwm0控制lvds背光;          imx6q_add_mxc_pwm_backlight(0, &mx6_sabresd_pwm_backlight_data);                imx6q_add_otp();          imx6q_add_viim();          imx6q_add_imx2_wdt(0, NULL);          imx6q_add_dma();                imx6q_add_dvfs_core(&sabresd_dvfscore_data);      #ifndef CONFIG_MX6_INTER_LDO_BYPASS          mx6_cpu_regulator_init();      #endif                imx6q_add_ion(0, &imx_ion_data,              sizeof(imx_ion_data) + sizeof(struct ion_platform_heap));          imx6q_add_device_buttons();                imx6q_add_hdmi_soc();          imx6q_add_hdmi_soc_dai();                if (cpu_is_mx6dl()) {              imx6dl_add_imx_pxp();              imx6dl_add_imx_pxp_client();              if (epdc_enabled) {                  mxc_register_device(&max17135_sensor_device, NULL);                  imx6dl_add_imx_epdc(&epdc_data);              }          }          /*         ret = gpio_request_array(mx6q_sabresd_flexcan_gpios,                 ARRAY_SIZE(mx6q_sabresd_flexcan_gpios));         if (ret)             pr_err("failed to request flexcan1-gpios: %d\n", ret);         else             imx6q_add_flexcan0(&mx6q_sabresd_flexcan0_pdata);         */                clko2 = clk_get(NULL, "clko2_clk");          if (IS_ERR(clko2))              pr_err("can't get CLKO2 clock.\n");                new_parent = clk_get(NULL, "osc_clk");          if (!IS_ERR(new_parent)) {              clk_set_parent(clko2, new_parent);              clk_put(new_parent);          }          rate = clk_round_rate(clko2, 24000000);          clk_set_rate(clko2, rate);          clk_enable(clko2);                /* Camera and audio use osc clock */          clko = clk_get(NULL, "clko_clk");          if (!IS_ERR(clko))              clk_set_parent(clko, clko2);                /* Enable Aux_5V */          gpio_request(SABRESD_AUX_5V_EN, "aux_5v_en");          gpio_direction_output(SABRESD_AUX_5V_EN, 1);          gpio_set_value(SABRESD_AUX_5V_EN, 1);            #ifndef CONFIG_IMX_PCIE          /* enable pcie 3v3 power without pcie driver */          pcie_3v3_power();          mdelay(10);          pcie_3v3_reset();      #endif                //gps_power_on(true);          /* Register charger chips */          platform_device_register(&sabresd_max8903_charger_1);          pm_power_off = mx6_snvs_poweroff;          imx6q_add_busfreq();                /* Add PCIe RC interface support */          imx6q_add_pcie(&mx6_sabresd_pcie_data);                imx6_add_armpmu();          imx6q_add_perfmon(0);          imx6q_add_perfmon(1);          imx6q_add_perfmon(2);  }