Some Micron NAND chips (MT29F1G08ABAFAWP-ITE:F) report 00 00 for the
revision number field of the ONFI parameter page. Rather than rejecting
these outright assume ONFI version 1.0 if the revision number is 00 00.
Signed-off-by: Chris Packham <chris.pack...@alliedtelesis.co.nz>
---
At the moment I haven't qualified this check on anything, I should
probably at least include vendor == MICRON.
As far as I can tell revision number == 0 is not permitted by the ONFI
spec but this wouldn't be the first time a vendor has ignored a spec. On
the other hand maybe I'm reading the spec wrong and someone here will
say "oh 0 means ...".
drivers/mtd/nand/raw/nand_base.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c
index 0cd3e216b95c..1691c7005ae4 100644
--- a/drivers/mtd/nand/raw/nand_base.c
+++ b/drivers/mtd/nand/raw/nand_base.c
@@ -5184,6 +5184,8 @@ static int nand_flash_detect_onfi(struct nand_chip *chip)
chip->parameters.onfi.version = 20;
else if (val & (1 << 1))
chip->parameters.onfi.version = 10;
+ else if (val == 0)
+ chip->parameters.onfi.version = 10;
if (!chip->parameters.onfi.version) {
pr_info("unsupported ONFI version: %d\n", val);
--
2.17.1
