2 files changed, 25 insertions, 14 deletions

diff --git a/arch/arm/mach-davinci/include/mach/nand.h b/arch/arm/mach-davinci/include/mach/nand.h
index aa482841270b..b520c4b5678a 100644
--- a/arch/arm/mach-davinci/include/mach/nand.h
+++ b/arch/arm/mach-davinci/include/mach/nand.h
@@ -68,10 +68,14 @@ struct davinci_nand_pdata {		/* platform_data */
 
         /* none  == NAND_ECC_NONE (strongly *not* advised!!)
          * soft  == NAND_ECC_SOFT
-         * 1-bit == NAND_ECC_HW
-         * 4-bit == NAND_ECC_HW_SYNDROME (not on all chips)
+         * else  == NAND_ECC_HW, according to ecc_bits
+         *
+         * All DaVinci-family chips support 1-bit hardware ECC.
+         * Newer ones also support 4-bit ECC, but are awkward
+         * using it with large page chips.
          */
         nand_ecc_modes_t        ecc_mode;
+        u8                      ecc_bits;
 
         /* e.g. NAND_BUSWIDTH_16 or NAND_USE_FLASH_BBT */
         unsigned                options;
diff --git a/arch/arm/plat-s3c/include/plat/nand.h b/arch/arm/plat-s3c/include/plat/nand.h
index f4dcd14af059..18f958801e64 100644
--- a/arch/arm/plat-s3c/include/plat/nand.h
+++ b/arch/arm/plat-s3c/include/plat/nand.h
@@ -10,19 +10,26 @@
  * published by the Free Software Foundation.
 */
 
-/* struct s3c2410_nand_set
+/**
+ * struct s3c2410_nand_set - define a set of one or more nand chips
+ * @disable_ecc:        Entirely disable ECC - Dangerous
+ * @flash_bbt:          Openmoko u-boot can create a Bad Block Table
+ *                      Setting this flag will allow the kernel to
+ *                      look for it at boot time and also skip the NAND
+ *                      scan.
+ * @nr_chips:           Number of chips in this set
+ * @nr_partitions:      Number of partitions pointed to by @partitions
+ * @name:               Name of set (optional)
+ * @nr_map:             Map for low-layer logical to physical chip numbers (option)
+ * @partitions:         The mtd partition list
  *
- * define an set of one or more nand chips registered with an unique mtd
- *
- * nr_chips      = number of chips in this set
- * nr_partitions = number of partitions pointed to be partitoons (or zero)
- * name          = name of set (optional)
- * nr_map        = map for low-layer logical to physical chip numbers (option)
- * partitions    = mtd partition list
-*/
-
+ * define a set of one or more nand chips registered with an unique mtd. Also
+ * allows to pass flag to the underlying NAND layer. 'disable_ecc' will trigger
+ * a warning at boot time.
+ */
 struct s3c2410_nand_set {
-        unsigned int            disable_ecc : 1;
+        unsigned int            disable_ecc:1;
+        unsigned int            flash_bbt:1;
 
         int                     nr_chips;
         int                     nr_partitions;
@@ -39,7 +46,7 @@ struct s3c2410_platform_nand {
         int     twrph0; /* active time for nWE/nOE */
         int     twrph1; /* time for release CLE/ALE from nWE/nOE inactive */
 
-        unsigned int    ignore_unset_ecc : 1;
+        unsigned int    ignore_unset_ecc:1;
 
         int                     nr_sets;
         struct s3c2410_nand_set *sets;