mtd: Add device-tree support to fsmc_nand

This patch adds support to configure the FSMC NAND driver (used amongst
others on SPEAr platforms) via device-tree instead of platform_data.

Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

1 files changed, 33 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/mtd/fsmc-nand.txt b/Documentation/devicetree/bindings/mtd/fsmc-nand.txt
new file mode 100644
index 000000000000..e2c663b354d2
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/fsmc-nand.txt
@@ -0,0 +1,33 @@
+* FSMC NAND
+
+Required properties:
+- compatible : "st,spear600-fsmc-nand"
+- reg : Address range of the mtd chip
+- reg-names: Should contain the reg names "fsmc_regs" and "nand_data"
+- st,ale-off : Chip specific offset to ALE
+- st,cle-off : Chip specific offset to CLE
+
+Optional properties:
+- bank-width : Width (in bytes) of the device.  If not present, the width
+  defaults to 1 byte
+- nand-skip-bbtscan: Indicates the the BBT scanning should be skipped
+
+Example:
+
+        fsmc: flash@d1800000 {
+                compatible = "st,spear600-fsmc-nand";
+                #address-cells = <1>;
+                #size-cells = <1>;
+                reg = <0xd1800000 0x1000        /* FSMC Register */
+                       0xd2000000 0x4000>;      /* NAND Base */
+                reg-names = "fsmc_regs", "nand_data";
+                st,ale-off = <0x20000>;
+                st,cle-off = <0x10000>;
+
+                bank-width = <1>;
+                nand-skip-bbtscan;
+
+                partition@0 {
+                        ...
+                };
+        };