From 26be2c53d671ecfd3e0483f0870649ac28322293 Mon Sep 17 00:00:00 2001 From: Nick Thompson Date: Sat, 12 Dec 2009 12:13:10 -0500 Subject: [PATCH] Davinci: NAND enable ECC even when not in NAND boot mode Davinci: NAND enable ECC even when not in NAND boot mode On Davinci platforms, the default NAND device is enabled (for ECC) in low level boot code when NAND boot mode is used. If booting in another mode, NAND ECC is not enabled. The driver should make sure ECC is enabled regardless of boot mode if NAND is configured in U-Boot. Signed-off-by: Nick Thompson --- drivers/mtd/nand/davinci_nand.c | 2 ++ include/asm-arm/arch-davinci/emif_defs.h | 3 +-- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c index 1ad802a61d..90e038e871 100644 --- a/drivers/mtd/nand/davinci_nand.c +++ b/drivers/mtd/nand/davinci_nand.c @@ -87,6 +87,7 @@ static void nand_davinci_enable_hwecc(struct mtd_info *mtd, int mode) (void)readl(&(emif_regs->NANDFECC[CONFIG_SYS_NAND_CS - 2])); val = readl(&emif_regs->NANDFCR); + val |= DAVINCI_NANDFCR_NAND_ENABLE(CONFIG_SYS_NAND_CS); val |= DAVINCI_NANDFCR_1BIT_ECC_START(CONFIG_SYS_NAND_CS); writel(val, &emif_regs->NANDFCR); } @@ -219,6 +220,7 @@ static void nand_davinci_4bit_enable_hwecc(struct mtd_info *mtd, int mode) */ val = readl(&emif_regs->NANDFCR); val &= ~DAVINCI_NANDFCR_4BIT_ECC_SEL_MASK; + val |= DAVINCI_NANDFCR_NAND_ENABLE(CONFIG_SYS_NAND_CS); val |= DAVINCI_NANDFCR_4BIT_ECC_SEL(CONFIG_SYS_NAND_CS); val |= DAVINCI_NANDFCR_4BIT_ECC_START; writel(val, &emif_regs->NANDFCR); diff --git a/include/asm-arm/arch-davinci/emif_defs.h b/include/asm-arm/arch-davinci/emif_defs.h index d67292f4b4..8fd4e01b8e 100644 --- a/include/asm-arm/arch-davinci/emif_defs.h +++ b/include/asm-arm/arch-davinci/emif_defs.h @@ -66,11 +66,10 @@ typedef struct { typedef emif_registers *emifregs; +#define DAVINCI_NANDFCR_NAND_ENABLE(n) (1 << (n-2)) #define DAVINCI_NANDFCR_4BIT_ECC_SEL_MASK (3 << 4) #define DAVINCI_NANDFCR_4BIT_ECC_SEL(n) ((n-2) << 4) - #define DAVINCI_NANDFCR_1BIT_ECC_START(n) (1 << (8 + (n-2))) - #define DAVINCI_NANDFCR_4BIT_ECC_START (1 << 12) #define DAVINCI_NANDFCR_4BIT_CALC_START (1 << 13) -- 2.39.5