1 files changed, 39 insertions, 1 deletions

diff --git a/Documentation/devicetree/bindings/mtd/atmel-nand.txt b/Documentation/devicetree/bindings/mtd/atmel-nand.txt
index a20069502f5..d555421ea49 100644
--- a/Documentation/devicetree/bindings/mtd/atmel-nand.txt
+++ b/Documentation/devicetree/bindings/mtd/atmel-nand.txt
@@ -3,7 +3,9 @@ Atmel NAND flash
 Required properties:
 - compatible : "atmel,at91rm9200-nand".
 - reg : should specify localbus address and size used for the chip,
-        and if availlable the ECC.
+        and hardware ECC controller if available.
+        If the hardware ECC is PMECC, it should contain address and size for
+        PMECC, PMECC Error Location controller and ROM which has lookup tables.
 - atmel,nand-addr-offset : offset for the address latch.
 - atmel,nand-cmd-offset : offset for the command latch.
 - #address-cells, #size-cells : Must be present if the device has sub-nodes
@@ -16,6 +18,15 @@ Optional properties:
 - nand-ecc-mode : String, operation mode of the NAND ecc mode, soft by default.
   Supported values are: "none", "soft", "hw", "hw_syndrome", "hw_oob_first",
   "soft_bch".
+- atmel,has-pmecc : boolean to enable Programmable Multibit ECC hardware.
+  Only supported by at91sam9x5 or later sam9 product.
+- atmel,pmecc-cap : error correct capability for Programmable Multibit ECC
+  Controller. Supported values are: 2, 4, 8, 12, 24.
+- atmel,pmecc-sector-size : sector size for ECC computation. Supported values
+  are: 512, 1024.
+- atmel,pmecc-lookup-table-offset : includes two offsets of lookup table in ROM
+  for different sector size. First one is for sector size 512, the next is for
+  sector size 1024.
 - nand-bus-width : 8 or 16 bus width if not present 8
 - nand-on-flash-bbt: boolean to enable on flash bbt option if not present false
 
@@ -39,3 +50,30 @@ nand0: nand@40000000,0 {
                 ...
         };
 };
+
+/* for PMECC supported chips */
+nand0: nand@40000000 {
+        compatible = "atmel,at91rm9200-nand";
+        #address-cells = <1>;
+        #size-cells = <1>;
+        reg = < 0x40000000 0x10000000   /* bus addr & size */
+                0xffffe000 0x00000600   /* PMECC addr & size */
+                0xffffe600 0x00000200   /* PMECC ERRLOC addr & size */
+                0x00100000 0x00100000   /* ROM addr & size */
+                >;
+        atmel,nand-addr-offset = <21>;  /* ale */
+        atmel,nand-cmd-offset = <22>;   /* cle */
+        nand-on-flash-bbt;
+        nand-ecc-mode = "hw";
+        atmel,has-pmecc;        /* enable PMECC */
+        atmel,pmecc-cap = <2>;
+        atmel,pmecc-sector-size = <512>;
+        atmel,pmecc-lookup-table-offset = <0x8000 0x10000>;
+        gpios = <&pioD 5 0      /* rdy */
+                 &pioD 4 0      /* nce */
+                 0              /* cd */
+                >;
+        partition@0 {
+                ...
+        };
+};