Stefan Roese wrote:

quoted

Is this an expected behavior - detection of 256 MiB NAND flash
takes around 20 seconds. The ndfc driver works fine after boot.

No, 20 seconds is definitely too long. Something must be wrong with the
ndfc 
driver or the NAND dts entries.

Best regards,
Stefan
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Thanks, Stefan

My ndfc DTS entry looks like this

nand@3,0 {
    compatible = "amcc,ndfc";
    reg = <0x00000003 0x00000000 0x00002000>;
    ccr = <0x00001000>;
    bank-settings = <0x80002222>;
    #address-cells = <1>;
    #size-cells = <1>;

    partition@0 {
        label = "data";
        reg = <0x00000000 0x10000000>;
    };
};

I also had to modify u-boot to provide ndfc ebc mappings.
Not sure if it's the best solution, but it worked. Sorry for
posting u-boot stuff here, I'll stop doing that if list thinks
it's irrelevant.

My u-boot code looks like this (modified canyonlands code):

void ft_board_setup(void *blob, bd_t *bd)
{
        u32 val[8];
        int rc;

        ft_cpu_setup(blob, bd);

        /* Fixup NOR mapping */
        val[0] = 0;                             /* chip select number */
        val[1] = 0;                             /* always 0 */
        val[2] = CFG_FLASH_BASE_PHYS_L;         /* we fixed up this address
*/
        val[3] = gd->bd->bi_flashsize;

        /* Set NAND Controller mapping */
        val[4] = CFG_NAND_CS;                   /* chip select number */
        val[5] = 0;                                         /* always 0 */
        val[6] = CFG_NAND_ADDR;              /* NAND address */
        val[7] = 0x2000;                               /* NAND register area
size */

        rc = fdt_find_and_setprop(blob, "/plb/opb/ebc", "ranges",
                                  val, sizeof(val), 1);
        if (rc) {
                printf("Unable to update property NOR mapping, err=%s\n",
                       fdt_strerror(rc));
        }
}

Felix.

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