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.
Reviewed-by: Boris Brezillon <boris.brezil...@bootlin.com>
Signed-off-by: Chris Packham <chris.pack...@alliedtelesis.co.nz>
---
This is now qualified on vendor == MICRON. I haven't qualified this
based on specific chips the ABAFA (id=d1) and ABBFA (id=a1) variants are
documented to have this behaviour.
Changes in v2:
- use fixup_onfi_param_page
Changes in v3:
- add code comment next to workaround
drivers/mtd/nand/raw/nand_micron.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/mtd/nand/raw/nand_micron.c
b/drivers/mtd/nand/raw/nand_micron.c
index 5ec4c90a637d..5cec79372181 100644
--- a/drivers/mtd/nand/raw/nand_micron.c
+++ b/drivers/mtd/nand/raw/nand_micron.c
@@ -289,6 +289,19 @@ static int micron_nand_init(struct nand_chip *chip)
return 0;
}
+static void micron_fixup_onfi_param_page(struct nand_chip *chip,
+ struct nand_onfi_params *p)
+{
+ /*
+ * MT29F1G08ABAFAWP-ITE:F and possibly others report 00 00 for the
+ * revision number field of the ONFI parameter page. Assume ONFI
+ * version 1.0 if the revision number is 00 00.
+ */
+ if (le16_to_cpu(p->revision) == 0)
+ p->revision = cpu_to_le16(1 << 1);
+}
+
const struct nand_manufacturer_ops micron_nand_manuf_ops = {
.init = micron_nand_init,
+ .fixup_onfi_param_page = micron_fixup_onfi_param_page,
};
--
2.17.1
