From: Haolin Li li.haolin@qq.com
According to datasheet, the upper four bits are reserved or used for reflecting the ECC status of the accumulated pages. The error bits number for the worst segment of the current page is encoded on lower four bits. Fix it by masking the upper bits.
This same issue has been already fixed in the linux kernel by: "mtd: spinand: macronix: Fix ECC Status Read" (sha1: f4cb4d7b46f6409382fd981eec9556e1f3c1dc5d)
Apply the same fix in the U-Boot driver.
Signed-off-by: Haolin Li li.haolin@qq.com --- drivers/mtd/nand/spi/macronix.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/mtd/nand/spi/macronix.c b/drivers/mtd/nand/spi/macronix.c index f4a8e81639..6d643a8000 100644 --- a/drivers/mtd/nand/spi/macronix.c +++ b/drivers/mtd/nand/spi/macronix.c @@ -14,6 +14,8 @@ #include <linux/mtd/spinand.h>
#define SPINAND_MFR_MACRONIX 0xC2 +#define MACRONIX_ECCSR_MASK 0x0F +
static SPINAND_OP_VARIANTS(read_cache_variants, SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0), @@ -59,7 +61,13 @@ static int mx35lf1ge4ab_get_eccsr(struct spinand_device *spinand, u8 *eccsr) SPI_MEM_OP_DUMMY(1, 1), SPI_MEM_OP_DATA_IN(1, eccsr, 1));
- return spi_mem_exec_op(spinand->slave, &op); + int ret = spi_mem_exec_op(spinand->slave, &op); + + if (ret) + return ret; + + *eccsr &= MACRONIX_ECCSR_MASK; + return 0; }
static int mx35lf1ge4ab_ecc_get_status(struct spinand_device *spinand,