From 258b21fc69c93172d8e4afaeff3a7303740ce7c6 Mon Sep 17 00:00:00 2001 From: Josh Wu Date: Tue, 24 Nov 2015 16:34:01 +0800 Subject: [PATCH] atmel_nand: Add 32 bit ecc support for sama5d2 chip MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Also if minimum ecc requirment is bigger then what we support, then just use our maxium pmecc support. But it is not safe, so we'll output a warning about this. Signed-off-by: Josh Wu Acked-by: Scott Wood Reviewed-by: Andreas Bießmann --- drivers/mtd/nand/atmel_nand.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c index 73fd403886..7cc1de0313 100644 --- a/drivers/mtd/nand/atmel_nand.c +++ b/drivers/mtd/nand/atmel_nand.c @@ -80,6 +80,7 @@ static struct nand_ecclayout atmel_pmecc_oobinfo; * 8-bits 13-bytes 14-bytes * 12-bits 20-bytes 21-bytes * 24-bits 39-bytes 42-bytes + * 32-bits 52-bytes 56-bytes */ static int pmecc_get_ecc_bytes(int cap, int sector_size) { @@ -638,6 +639,9 @@ static void atmel_pmecc_core_init(struct mtd_info *mtd) case 24: val = PMECC_CFG_BCH_ERR24; break; + case 32: + val = PMECC_CFG_BCH_ERR32; + break; } if (host->pmecc_sector_size == 512) @@ -723,7 +727,11 @@ static int pmecc_choose_ecc(struct atmel_nand_host *host, else if (*cap <= 24) host->pmecc_corr_cap = 24; else - return -EINVAL; +#ifdef CONFIG_SAMA5D2 + host->pmecc_corr_cap = 32; +#else + host->pmecc_corr_cap = 24; +#endif } if (host->pmecc_sector_size == 0) { /* use the most fitable sector size (the near smaller one ) */ -- 2.39.5