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: Stefan Agner <ste...@agner.ch>
---
configs/vf610twr_defconfig | 2 ++
doc/README.nand | 18 ------------------
drivers/mtd/nand/Kconfig | 30 ++++++++++++++++++++++++++++++
include/configs/vf610twr.h | 3 ---
4 files changed, 32 insertions(+), 21 deletions(-)
diff --git a/configs/vf610twr_defconfig b/configs/vf610twr_defconfig
index 7de374a..5e0ac9f 100644
--- a/configs/vf610twr_defconfig
+++ b/configs/vf610twr_defconfig
@@ -1,3 +1,5 @@
CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=board/freescale/vf610twr/imximage.cfg,ENV_IS_IN_MMC"
CONFIG_ARM=y
CONFIG_TARGET_VF610TWR=y
+CONFIG_NAND_VF610_NFC=y
+CONFIG_SYS_NAND_BUSWIDTH_16BIT=y
diff --git a/doc/README.nand b/doc/README.nand
index 46d7edd..0ff5633 100644
--- a/doc/README.nand
+++ b/doc/README.nand
@@ -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
=========================
diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index 72825c3..0a9e96f 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -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
diff --git a/include/configs/vf610twr.h b/include/configs/vf610twr.h
index 05bc7d0..621aa13 100644
--- a/include/configs/vf610twr.h
+++ b/include/configs/vf610twr.h
@@ -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
--
2.3.5
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