Hi all,
The patch configures the nand driver, enable the nand driver in default configuration. Provide the menuconfig option for ECC
computation.
Files modified:
1. arch/arm/configs/omap_3430sdp_defconfig
2. drivers/mtd/nand/Kconfig
3. include/asm-arm/arch-omap/nand.h
Regards,
-Sameer
Description: This patch configures the generic nand driver, enables the nand
driver in default configuration. Provides menuconfig option for HW ECC support
Signed-off-by: Sameer U <sameersu@xxxxxx>
Ack-by: Nishant Kamat <nskamat@xxxxxx>
Rohit Choraria <rohitkc@xxxxxx>
---
arch/arm/configs/omap_3430sdp_defconfig | 11 ++++++++++-
drivers/mtd/nand/Kconfig | 16 +++++++++++++---
include/asm-arm/arch-omap/nand.h | 10 +++++++++-
3 files changed, 32 insertions(+), 5 deletions(-)
Index: linux-omap-git/drivers/mtd/nand/Kconfig
===================================================================
--- linux-omap-git.orig/drivers/mtd/nand/Kconfig
+++ linux-omap-git/drivers/mtd/nand/Kconfig
@@ -70,10 +70,20 @@ config MTD_NAND_AMS_DELTA
Support for NAND flash on Amstrad E3 (Delta).
config MTD_NAND_OMAP2
- tristate "NAND Flash device on OMAP 2420H4/2430SDP boards"
- depends on (ARM && ARCH_OMAP2 && MTD_NAND)
+ tristate "NAND Flash device on OMAP 3430SDP/2420H4/2430SDP boards"
+ depends on (ARM && (ARCH_OMAP2 || ARCH_OMAP3) && MTD_NAND)
help
- Support for NAND flash on Texas Instruments 2430SDP/2420H4 platforms.
+ Support for NAND flash on Texas Instruments 3430SDP/2430SDP/2420H4 platforms.
+
+config MTD_NAND_OMAP_HWECC
+ bool "The hardware ECC support"
+ depends on MTD_NAND && MTD_NAND_OMAP2
+ default n
+ help
+ The ECC compuatation for the data to be written/read can be either by
+ software or omap has Hw ecc engine which calculates it.
+ MTD_NAND_OMAP_HWECC = y which enables the hw ecc
+ MTD_NAND_OMAP_HWECC = n, enables software ecc
config MTD_NAND_OMAP
tristate "NAND Flash device on OMAP H3/H2/P2 boards"
Index: linux-omap-git/include/asm-arm/arch-omap/nand.h
===================================================================
--- linux-omap-git.orig/include/asm-arm/arch-omap/nand.h
+++ linux-omap-git/include/asm-arm/arch-omap/nand.h
@@ -17,8 +17,16 @@ struct omap_nand_platform_data {
struct mtd_partition *parts;
int nr_parts;
int (*nand_setup)(void __iomem *);
- int (*dev_ready)(struct omap_nand_platform_data *);
+ unsigned int (*dev_ready)(struct omap_nand_platform_data *);
int dma_channel;
void __iomem *gpmc_cs_baseaddr;
void __iomem *gpmc_baseaddr;
+ unsigned int plat_options;
+ char device_width;
};
+
+/* Platform specific options definitions */
+#define NAND_WAITPOL_LOW 0 << 0
+#define NAND_WAITPOL_HIGH 1 << 0
+#define NAND_WAITPOL_MASK 1 << 0
+
Index: linux-omap-git/arch/arm/configs/omap_3430sdp_defconfig
===================================================================
--- linux-omap-git.orig/arch/arm/configs/omap_3430sdp_defconfig
+++ linux-omap-git/arch/arm/configs/omap_3430sdp_defconfig
@@ -460,7 +460,16 @@ CONFIG_MTD_OMAP_NOR=y
# CONFIG_MTD_DOC2000 is not set
# CONFIG_MTD_DOC2001 is not set
# CONFIG_MTD_DOC2001PLUS is not set
-# CONFIG_MTD_NAND is not set
+CONFIG_MTD_NAND=y
+# CONFIG_MTD_NAND_VERIFY_WRITE is not set
+CONFIG_MTD_NAND_ECC_SMC=y
+# CONFIG_MTD_NAND_MUSEUM_IDS is not set
+CONFIG_MTD_NAND_OMAP2=y
+#CONFIG_MTD_NAND_OMAP_HWECC is not set
+CONFIG_MTD_NAND_IDS=y
+# CONFIG_MTD_NAND_DISKONCHIP is not set
+# CONFIG_MTD_NAND_NANDSIM is not set
+# CONFIG_MTD_NAND_PLATFORM is not set
CONFIG_MTD_ONENAND=y
CONFIG_MTD_ONENAND_VERIFY_WRITE=y
# CONFIG_MTD_ONENAND_GENERIC is not set
-
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