axs10x: Get rid of both I2C and EEPROM who used to use I2C

[people/ms/u-boot.git] / doc / README.nand

diff --git a/doc/README.nand b/doc/README.nand
index 0ff56331d5f92ec1ba0dbea186e40d36b4a06cb2..2295bb2d962a18e6c57ef415058cfb331ba1db59 100644 (file)
--- a/doc/README.nand
+++ b/doc/README.nand
@@ -94,7 +94,7 @@ Configuration Options:
        address of u-boot MTD partition in NAND.
 
    CONFIG_CMD_NAND
-      Enables NAND support and commmands.
+      Enables NAND support and commands.
 
    CONFIG_CMD_NAND_TORTURE
       Enables the torture command (see description of this command below).
@@ -136,15 +136,8 @@ Configuration Options:
       Example of new init to be added to the end of an existing driver
       init:
 
-       /*
-        * devnum is the device number to be used in nand commands
-        * and in mtd->name.  Must be less than
-        * CONFIG_SYS_NAND_MAX_DEVICE.
-        */
-       mtd = &nand_info[devnum];
-
        /* chip is struct nand_chip, and is now provided by the driver. */
-       mtd->priv = &chip;
+       mtd = nand_to_mtd(&chip);
 
        /*
         * Fill in appropriate values if this driver uses these fields,
@@ -165,7 +158,11 @@ Configuration Options:
        if (nand_scan_tail(mtd))
                error out
 
-       if (nand_register(devnum))
+       /*
+        * devnum is the device number to be used in nand commands
+        * and in mtd->name.  Must be less than CONFIG_SYS_MAX_NAND_DEVICE.
+        */
+       if (nand_register(devnum, mtd))
                error out
 
       In addition to providing more flexibility to the driver, it reduces
@@ -274,7 +271,7 @@ Platform specific options
 
                However, for 4K pagesize NAND
                NAND_PAGESIZE = 4096
-               NAND_OOBSIZE = 64
+               NAND_OOBSIZE = 224
                ECC_BYTES = 26
                2 + (4096 / 512) * 26 = 210 < NAND_OOBSIZE
                Thus BCH16 can be supported on 4K page NAND.
@@ -310,7 +307,7 @@ Miscellaneous and testing commands:
   DANGEROUS!!! Factory set bad blocks will be lost. Use only
   to remove artificial bad blocks created with the "markbad" command.
 
-  "torture offset"
+  "torture offset [size]"
   Torture block to determine if it is still reliable.
   Enabled by the CONFIG_CMD_NAND_TORTURE configuration option.
   This command returns 0 if the block is still reliable, else 1.
@@ -327,6 +324,10 @@ Miscellaneous and testing commands:
   automate actions following a nand->write() error. This would e.g. be required
   in order to program or update safely firmware to NAND, especially for the UBI
   part of such firmware.
+  Optionally, a second parameter size can be given to test multiple blocks with
+  one call. If size is not a multiple of the NAND's erase size, then the block
+  that contains offset + size will be tested in full. If used with size, this
+  command returns 0 if all tested blocks have been found reliable, else 1.
 
 
 NAND locking command (for chips with active LOCKPRE pin)