Setup NAND flash timing on DM6467T EVM. Without the timing setup, the NAND flash on DM6467T RevC EVM reports a number of random bad blocks because of read errors.
Also, with this, copying a 100M file on RevB EVM takes ~35 sec against 1 minute 30 seconds earlier. Signed-off-by: Sekhar Nori <[email protected]> --- v2: DM6467T and DM6467 EVMs use slightly different NAND parts, made the timing configuration specific to DM6467T. arch/arm/mach-davinci/board-dm646x-evm.c | 14 ++++++++++++++ 1 files changed, 14 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-davinci/board-dm646x-evm.c b/arch/arm/mach-davinci/board-dm646x-evm.c index 6d88893..749aef8 100644 --- a/arch/arm/mach-davinci/board-dm646x-evm.c +++ b/arch/arm/mach-davinci/board-dm646x-evm.c @@ -42,6 +42,7 @@ #include <mach/nand.h> #include <mach/clock.h> #include <mach/cdce949.h> +#include <mach/aemif.h> #include "clock.h" @@ -71,6 +72,16 @@ static struct mtd_partition davinci_nand_partitions[] = { } }; +static struct davinci_aemif_timing dm6467tevm_nandflash_timing = { + .wsetup = 29, + .wstrobe = 24, + .whold = 14, + .rsetup = 19, + .rstrobe = 33, + .rhold = 0, + .ta = 29, +}; + static struct davinci_nand_pdata davinci_nand_data = { .mask_cle = 0x80000, .mask_ale = 0x40000, @@ -730,6 +741,9 @@ static __init void evm_init(void) dm646x_init_mcasp0(&dm646x_evm_snd_data[0]); dm646x_init_mcasp1(&dm646x_evm_snd_data[1]); + if (machine_is_davinci_dm6467tevm()) + davinci_nand_data.timing = &dm6467tevm_nandflash_timing; + platform_device_register(&davinci_nand_device); if (HAS_ATA) -- 1.6.2.4 _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
