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Date: Sun, 28 Oct 2018 22:23:22 +0100
From: Ladislav Michl <ladis@linux-mips.org>
Message-ID: <20181028212322.GG14788@lenoch>
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Subject: [PATCH 06/16] mtd: atmel_nand: Add per board ECC setup
To: barebox@lists.infradead.org
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
---
arch/arm/mach-at91/include/mach/board.h | 2 ++
drivers/mtd/nand/atmel_nand.c | 3 +++
2 files changed, 5 insertions(+)
diff --git a/arch/arm/mach-at91/include/mach/board.h b/arch/arm/mach-at91/include/mach/board.h
index 5d76e00ae..b7adb173a 100644
--- a/arch/arm/mach-at91/include/mach/board.h
+++ b/arch/arm/mach-at91/include/mach/board.h
@@ -64,6 +64,8 @@ struct atmel_nand_data {
u8 cle; /* address line number connected to CLE */
u8 bus_width_16; /* buswidth is 16 bit */
u8 ecc_mode; /* NAND_ECC_* */
+ u8 ecc_strength; /* number of bits to correct per ECC step */
+ u8 ecc_size_shift; /* data bytes covered by a single ECC step.*/
u8 on_flash_bbt; /* Use flash based bbt */
u8 has_pmecc; /* Use PMECC */
u8 bus_on_d0;
diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c
index 797cdc2ba..50c541122 100644
--- a/drivers/mtd/nand/atmel_nand.c
+++ b/drivers/mtd/nand/atmel_nand.c
@@ -1298,6 +1298,7 @@ static int atmel_hw_nand_init_params(struct device_d *dev,
nand_chip->ecc.hwctl = atmel_nand_hwctl;
nand_chip->ecc.read_page = atmel_nand_read_page;
nand_chip->ecc.bytes = 4;
+ nand_chip->ecc.strength = 1;
return 0;
}
@@ -1388,6 +1389,8 @@ static int __init atmel_nand_probe(struct device_d *dev)
}
nand_chip->ecc.mode = pdata->ecc_mode;
+ nand_chip->ecc.strength = pdata->ecc_strength ? : 1;
+ nand_chip->ecc.size = 1 << pdata->ecc_size_shift ? : 512;
if (IS_ENABLED(CONFIG_NAND_ECC_HW) &&
pdata->ecc_mode == NAND_ECC_HW) {
--
2.19.1
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