[PATCH 25/47] davinci: dm6467t evm: setup NAND flash timing
Kevin Hilman
khilman at deeprootsystems.com
Fri Oct 1 17:29:49 EDT 2010
From: Sekhar Nori <nsekhar at ti.com>
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 at ti.com>
Acked-by: Kevin Hilman <khilman at deeprootsystems.com>
Signed-off-by: Kevin Hilman <khilman at deeprootsystems.com>
---
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 4502f34..5a29955 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,
@@ -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);
--
1.7.2.1
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