mtd: vf610_nfc: add Freescale NFC controller configs to Kconfig

[karo-tx-uboot.git] / drivers / mtd / nand / Kconfig

diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index a0648ead47ffec1d177df42555c4fbe732af2889..626a8db00987f3843caff89c2fc2992da746de66 100644 (file)
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -38,6 +38,36 @@ config NAND_DENALI_SPARE_AREA_SKIP_BYTES
          of OOB area before last ECC sector data starts.  This is potentially
          used to preserve the bad block marker in the OOB area.
 
+config NAND_VF610_NFC
+       bool "Support for Freescale NFC for VF610/MPC5125"
+       select SYS_NAND_SELF_INIT
+       help
+         Enables support for NAND Flash Controller on some Freescale
+         processors like the VF610, MPC5125, MCF54418 or Kinetis K70.
+         The driver supports a maximum 2k page size. The driver
+         currently does not support hardware ECC.
+
+comment "Generic NAND options"
+
+# Enhance depends when converting drivers to Kconfig which use this config
+# option (mxc_nand, ndfc, omap_gpmc).
+config SYS_NAND_BUSWIDTH_16BIT
+       bool "Use 16-bit NAND interface"
+       depends on NAND_VF610_NFC
+       help
+         Indicates that NAND device has 16-bit wide data-bus. In absence of this
+         config, bus-width of NAND device is assumed to be either 8-bit and later
+         determined by reading ONFI params.
+         Above config is useful when NAND device's bus-width information cannot
+         be determined from on-chip ONFI params, like in following scenarios:
+         - SPL boot does not support reading of ONFI parameters. This is done to
+           keep SPL code foot-print small.
+         - In current U-Boot flow using nand_init(), driver initialization
+           happens in board_nand_init() which is called before any device probe
+           (nand_scan_ident + nand_scan_tail), thus device's ONFI parameters are
+           not available while configuring controller. So a static CONFIG_NAND_xx
+           is needed to know the device's bus-width in advance.
+
 if SPL
 
 config SPL_NAND_DENALI