AM335X 的GPMC怎么接多个设备，GPIB谁用过

static void evm_nand_init(int evm_id, int profile)

{

    struct omap_nand_platform_data *pdata;

    struct gpmc_devices_info gpmc_device[2] = {

        { NULL, 0 },

        { NULL, 0 },

    };

 

    setup_pin_mux(nand_pin_mux);

    pdata = omap_nand_init(am335x_nand_partitions,

        ARRAY_SIZE(am335x_nand_partitions), 0, 0,

        &am335x_nand_timings);

    if (!pdata)

        return;

    pdata->ecc_opt =OMAP_ECC_BCH8_CODE_HW;

    pdata->elm_used = true;

    gpmc_device[0].pdata = pdata;

    gpmc_device[0].flag = GPMC_DEVICE_NAND;

 

    omap_init_gpmc(gpmc_device, sizeof(gpmc_device));

    omap_init_elm();

}

/* Pin mux for nand flash module */

static struct pinmux_config nand_pin_mux[] = {

    {"gpmc_ad0.gpmc_ad0",     OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLUP},

    {"gpmc_ad1.gpmc_ad1",     OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLUP},

    {"gpmc_ad2.gpmc_ad2",     OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLUP},

    {"gpmc_ad3.gpmc_ad3",     OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLUP},

    {"gpmc_ad4.gpmc_ad4",     OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLUP},

    {"gpmc_ad5.gpmc_ad5",     OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLUP},

    {"gpmc_ad6.gpmc_ad6",     OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLUP},

    {"gpmc_ad7.gpmc_ad7",     OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLUP},

    {"gpmc_wait0.gpmc_wait0", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLUP},

    {"gpmc_wpn.gpmc_wpn",     OMAP_MUX_MODE7 | AM33XX_PIN_INPUT_PULLUP},

    {"gpmc_csn0.gpmc_csn0",   OMAP_MUX_MODE0 | AM33XX_PULL_DISA},

    {"gpmc_advn_ale.gpmc_advn_ale",  OMAP_MUX_MODE0 | AM33XX_PULL_DISA},

    {"gpmc_oen_ren.gpmc_oen_ren",    OMAP_MUX_MODE0 | AM33XX_PULL_DISA},

    {"gpmc_wen.gpmc_wen",     OMAP_MUX_MODE0 | AM33XX_PULL_DISA},

    {"gpmc_ben0_cle.gpmc_ben0_cle",  OMAP_MUX_MODE0 | AM33XX_PULL_DISA},

    {NULL, 0},

};