On 2 February 2013 20:35, George Pontis <GPontis@xxxxxx> wrote:
> Under 2012.11 I created a new board support package for custom hardware,
> which included a M25P32. I store barebox and its environment there, and boot
> from it. The board file also defines partitions for it. The first three look
> like this:
>
> devfs_add_partition("m25p0", 0, 0x050000,
> DEVFS_PARTITION_FIXED, "barebox");
> devfs_add_partition("m25p0", 0x050000, 0x010000,
> DEVFS_PARTITION_FIXED, "env0");
> devfs_add_partition("m25p0", 0x060000, 0x330000,
> DEVFS_PARTITION_FIXED, "kernel");
>
> This created devices /dev/barebox, /dev/env0, and so on. It also allowed for
> simple commands like "erase /dev/barebox", "tftp barebox.bin /dev/barebox",
> etc.
>
> More recently I updated to the 2013.01 release. My config file is not much
> different and it still has enabled CONFIG_MTD, CONFIG_MTD_M25P80,
> CONFIG_MTD_WRITE. The new release starts up just fine and boots the kernel
> as usual. However, it does not see the M25P32.
>
> With the earlier release, I saw a line displayed at startup as so:
>
> m25p m25p0: m25p32 (4096 Kbytes)
>
> Also, devinfo listed the partitions on the part. That m25p line is not
> displayed with the 2013.01 release and there are no partitions. Devinfo does
> show one line for the m25p driver.
>
> Any suggestions where to look for a fix ?
Some times ago I have got just the same problem: after rebasing to the
new barebox release the spi memory chips "disappeared".
Here is part of my board code. It works for old barebox release:
static struct spi_board_info board_spi_devs[] __initdata = {
{
/* Spansion S25FL004A SPI flash */
.name = "m25p",
.max_speed_hz = 50000000,
.bus_num = 0,
.chip_select = 0,
.mode = SPI_MODE_3,
.platform_data = &lig32_spi0_flash_data,
}
...
spi_register_board_info(board_spi_devs, ARRAY_SIZE(board_spi_devs));
I changed the 'name' field from "m25p" to "m25p80", and it works again!
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--
Best regards,
Antony Pavlov
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