Re: [U-Boot] [PATCH v7 02/19] nand: mxc: Add support for i.MX5

26 Feb 2013

      Benoit,
On Fri, Feb 15, 2013 at 6:54 PM, Benoît Thébaudeau
benoit.thebaudeau@advansee.com wrote:
...
+#elif defined(CONFIG_MX51) || defined(CONFIG_MX53)
+static int is_16bit_nand(void)
+{

  struct src *src = (struct src *)SRC_BASE_ADDR;

  if (readl(&src->sbmr) & SRC_SBMR_NF16B)

          return 1;

  else

          return 0;

This logic is not working on my tests with mx53ard and it results in:
NAND:  NAND device: Manufacturer ID: 0xec, Chip ID: 0xd5 (Samsung NAND 2GiB 3,3)
NAND bus width 16 instead 8 bit
No NAND device found!!!
0 MiB
I am using NAND, but not booting from it, so I don't think we should
use SBMR register to decide the NAND bus width.
If we are not booting from NAND, shouldn't we use a CONFIG_ option in
mx53ard.h to tell the NAND bus width?
Regards,
Fabio Estevam