summaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree
diff options
context:
space:
mode:
authorJamie Lentin <jm@lentin.co.uk>2012-04-18 11:06:41 +0100
committerJason Cooper <jason@lakedaemon.net>2012-05-15 02:29:11 +0000
commita0fabf722c9dc73a3eed24ce166476ddb00eda1e (patch)
tree1a7aec13bc1eee977cb2e5fbeaa0f9540aab5b84 /Documentation/devicetree
parent9007d1007317658d5b32bda9f59c797c59ce4d47 (diff)
mtd: Add orion_nand devicetree bindings
Allow a NAND chip using the orion_nand driver to be described using devicetree. Changes since last submission (V4) [Addressing comments by]:- * WARN when bank-width is out of range [Andrew Lunn] Changes since last submission (V3):- * Document all parameters [Grant Likely] * Convert bank-width to be in bytes * Add explicit defaults for cle, ale and bank-width Signed-off-by: Jamie Lentin <jm@lentin.co.uk> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r--Documentation/devicetree/bindings/mtd/orion-nand.txt50
1 files changed, 50 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mtd/orion-nand.txt b/Documentation/devicetree/bindings/mtd/orion-nand.txt
new file mode 100644
index 00000000000..b2356b7d2fa
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/orion-nand.txt
@@ -0,0 +1,50 @@
+NAND support for Marvell Orion SoC platforms
+
+Required properties:
+- compatible : "mrvl,orion-nand".
+- reg : Base physical address of the NAND and length of memory mapped
+ region
+
+Optional properties:
+- cle : Address line number connected to CLE. Default is 0
+- ale : Address line number connected to ALE. Default is 1
+- bank-width : Width in bytes of the device. Default is 1
+- chip-delay : Chip dependent delay for transferring data from array to read
+ registers in usecs
+
+The device tree may optionally contain sub-nodes describing partitions of the
+address space. See partition.txt for more detail.
+
+Example:
+
+nand@f4000000 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ cle = <0>;
+ ale = <1>;
+ bank-width = <1>;
+ chip-delay = <25>;
+ compatible = "mrvl,orion-nand";
+ reg = <0xf4000000 0x400>;
+
+ partition@0 {
+ label = "u-boot";
+ reg = <0x0000000 0x100000>;
+ read-only;
+ };
+
+ partition@100000 {
+ label = "uImage";
+ reg = <0x0100000 0x200000>;
+ };
+
+ partition@300000 {
+ label = "dtb";
+ reg = <0x0300000 0x100000>;
+ };
+
+ partition@400000 {
+ label = "root";
+ reg = <0x0400000 0x7d00000>;
+ };
+};