mtd: nand: automate NAND timings selection

[u-boot] / include / linux / mtd / nand.h

diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 0b9fe3f0e85a85324d3f59f96a768d20db2ae6c6..274bd8d5c53efbab1e4623b3754b27f656512f3f 100644 (file)
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -764,10 +764,9 @@ nand_get_sdr_timings(const struct nand_data_interface *conf)
  *                      also from the datasheet. It is the recommended ECC step
  *                     size, if known; if unknown, set to zero.
  * @onfi_timing_mode_default: [INTERN] default ONFI timing mode. This field is
- *                           either deduced from the datasheet if the NAND
- *                           chip is not ONFI compliant or set to 0 if it is
- *                           (an ONFI chip is always configured in mode 0
- *                           after a NAND reset)
+ *                           set to the actually used ONFI mode if the chip is
+ *                           ONFI compliant or deduced from the datasheet if
+ *                           the NAND chip is not ONFI compliant.
  * @numchips:          [INTERN] number of physical chips
  * @chipsize:          [INTERN] the size of one chip for multichip arrays
  * @pagemask:          [INTERN] page number mask = number of (pages / chip) - 1
@@ -787,6 +786,7 @@ nand_get_sdr_timings(const struct nand_data_interface *conf)
  * @read_retries:      [INTERN] the number of read retry modes supported
  * @onfi_set_features: [REPLACEABLE] set the features for ONFI nand
  * @onfi_get_features: [REPLACEABLE] get the features for ONFI nand
+ * @setup_data_interface: [OPTIONAL] setup the data interface and timing
  * @bbt:               [INTERN] bad block table pointer
  * @bbt_td:            [REPLACEABLE] bad block table descriptor for flash
  *                     lookup.
@@ -835,6 +835,10 @@ struct nand_chip {
        int (*onfi_get_features)(struct mtd_info *mtd, struct nand_chip *chip,
                        int feature_addr, uint8_t *subfeature_para);
        int (*setup_read_retry)(struct mtd_info *mtd, int retry_mode);
+       int (*setup_data_interface)(struct mtd_info *mtd,
+                                   const struct nand_data_interface *conf,
+                                   bool check_only);
+
 
        int chip_delay;
        unsigned int options;
@@ -862,6 +866,8 @@ struct nand_chip {
        struct nand_onfi_params onfi_params;
        struct nand_jedec_params jedec_params;
  
+       struct nand_data_interface *data_interface;
+
        int read_retries;
 
        flstate_t state;