Commit 5519194d authored by Stefan Agner's avatar Stefan Agner Committed by Scott Wood

mtd: vf610_nfc: add Freescale NFC controller configs to Kconfig

This commit allows users to enable/disable the Freescale NFC
controller found in systems like Vybrid (VF610), MPC5125, MCF54418
or Kinetis K70 via Kconfig with more detailed help docs.
Signed-off-by: default avatarStefan Agner <stefan@agner.ch>
Acked-by: default avatarStefano Babic <sbabic@denx.de>
[scottwood: updated vf610twr_nand_defconfig]
Signed-off-by: default avatarScott Wood <scottwood@freescale.com>
parent 84d656a2
CONFIG_ARM=y
CONFIG_TARGET_COLIBRI_VF=y
CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=board/toradex/colibri_vf/imximage.cfg,ENV_IS_IN_NAND,IMX_NAND"
CONFIG_NAND_VF610_NFC=y
CONFIG_SYS_NAND_VF610_NFC_60_ECC_BYTES=y
CONFIG_ARM=y
CONFIG_TARGET_VF610TWR=y
CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=board/freescale/vf610twr/imximage.cfg,ENV_IS_IN_MMC"
CONFIG_NAND_VF610_NFC=y
CONFIG_SYS_NAND_BUSWIDTH_16BIT=y
CONFIG_ARM=y
CONFIG_TARGET_VF610TWR=y
CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=board/freescale/vf610twr/imximage.cfg,ENV_IS_IN_NAND"
CONFIG_NAND_VF610_NFC=y
CONFIG_SYS_NAND_BUSWIDTH_16BIT=y
......@@ -188,24 +188,6 @@ Configuration Options:
This is used by SoC platforms which do not have built-in ELM
hardware engine required for BCH ECC correction.
CONFIG_SYS_NAND_BUSWIDTH_16BIT
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.
Some drivers using above config are:
drivers/mtd/nand/mxc_nand.c
drivers/mtd/nand/ndfc.c
drivers/mtd/nand/omap_gpmc.c
Platform specific options
=========================
......
......@@ -32,6 +32,36 @@ 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
......
......@@ -50,8 +50,6 @@
/* NAND support */
#define CONFIG_CMD_NAND
#define CONFIG_NAND_VF610_NFC
#define CONFIG_SYS_NAND_SELF_INIT
#define CONFIG_SYS_MAX_NAND_DEVICE 1
#define CONFIG_SYS_NAND_BASE NFC_BASE_ADDR
......
......@@ -50,10 +50,7 @@
#define CONFIG_CMD_NAND_TRIMFFS
#ifdef CONFIG_CMD_NAND
#define CONFIG_NAND_VF610_NFC
#define CONFIG_SYS_NAND_SELF_INIT
#define CONFIG_USE_ARCH_MEMCPY
#define CONFIG_SYS_NAND_BUSWIDTH_16BIT
#define CONFIG_SYS_MAX_NAND_DEVICE 1
#define CONFIG_SYS_NAND_BASE NFC_BASE_ADDR
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment