From 0b3fc7bb88243371a2bd4a4990fb62a0b722efe7 Mon Sep 17 00:00:00 2001 From: Sekhar Nori Date: Mon, 9 Aug 2010 15:46:40 +0530 Subject: [PATCH] davinci: dm6467t evm: setup NAND flash timing 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 Acked-by: Kevin Hilman Signed-off-by: Kevin Hilman --- arch/arm/mach-davinci/board-dm646x-evm.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/arch/arm/mach-davinci/board-dm646x-evm.c b/arch/arm/mach-davinci/board-dm646x-evm.c index 4502f346b2b0..5a29955b2f5c 100644 --- a/arch/arm/mach-davinci/board-dm646x-evm.c +++ b/arch/arm/mach-davinci/board-dm646x-evm.c @@ -42,6 +42,7 @@ #include #include #include +#include #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);