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davinci: dm6467t evm: setup NAND flash timing

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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 <nsekhar@ti.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
This commit is contained in:
Sekhar Nori 2010-08-09 15:46:40 +05:30 committed by Kevin Hilman
parent 18a8505cc1
commit 0b3fc7bb88
1 changed files with 14 additions and 0 deletions
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14
arch/arm/mach-davinci/board-dm646x-evm.c
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@ -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,
@ -763,6 +774,9 @@ 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);
dm646x_init_edma(dm646x_edma_rsv);