mtd: gpmi: make blockmark swapping optional

[karo-tx-linux.git] / Documentation / devicetree / bindings / mtd / gpmi-nand.txt

diff --git a/Documentation/devicetree/bindings/mtd/gpmi-nand.txt b/Documentation/devicetree/bindings/mtd/gpmi-nand.txt
index 458d5963468826647d2469c23f542bde3ffe047c..a011fdf61dbfaeac39ab76bb48db143443243549 100644 (file)
--- a/Documentation/devicetree/bindings/mtd/gpmi-nand.txt
+++ b/Documentation/devicetree/bindings/mtd/gpmi-nand.txt
@@ -25,6 +25,16 @@ Optional properties:
                        discoverable or this property is not enabled,
                        the software may chooses an implementation-defined
                        ECC scheme.
+  - fsl,no-blockmark-swap: Don't swap the bad block marker from the OOB
+                       area with the byte in the data area but rely on the
+                       flash based BBT for identifying bad blocks.
+                       NOTE: this is only valid in conjunction with
+                             'nand-on-flash-bbt'.
+                       WARNING: on i.MX28 blockmark swapping cannot be
+                       disabled for the BootROM in the FCB. Thus,
+                       partitions written from Linux with this feature
+                       turned on may not be accessible by the BootROM
+                       code.
 
 The device tree may optionally contain sub-nodes describing partitions of the
 address space. See partition.txt for more detail.