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-rw-r--r--Documentation/ABI/testing/sysfs-class-mtd6
-rw-r--r--Documentation/devicetree/bindings/mtd/partition.txt36
2 files changed, 36 insertions, 6 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-mtd b/Documentation/ABI/testing/sysfs-class-mtd
index 938ef71e2035..3105644b3bfc 100644
--- a/Documentation/ABI/testing/sysfs-class-mtd
+++ b/Documentation/ABI/testing/sysfs-class-mtd
@@ -14,8 +14,7 @@ Description:
The /sys/class/mtd/mtd{0,1,2,3,...} directories correspond
to each /dev/mtdX character device. These may represent
physical/simulated flash devices, partitions on a flash
- device, or concatenated flash devices. They exist regardless
- of whether CONFIG_MTD_CHAR is actually enabled.
+ device, or concatenated flash devices.
What: /sys/class/mtd/mtdXro/
Date: April 2009
@@ -23,8 +22,7 @@ KernelVersion: 2.6.29
Contact: linux-mtd@lists.infradead.org
Description:
These directories provide the corresponding read-only device
- nodes for /sys/class/mtd/mtdX/ . They are only created
- (for the benefit of udev) if CONFIG_MTD_CHAR is enabled.
+ nodes for /sys/class/mtd/mtdX/ .
What: /sys/class/mtd/mtdX/dev
Date: April 2009
diff --git a/Documentation/devicetree/bindings/mtd/partition.txt b/Documentation/devicetree/bindings/mtd/partition.txt
index 6e1f61f1e789..9315ac96b49b 100644
--- a/Documentation/devicetree/bindings/mtd/partition.txt
+++ b/Documentation/devicetree/bindings/mtd/partition.txt
@@ -5,8 +5,12 @@ on platforms which have strong conventions about which portions of a flash are
used for what purposes, but which don't use an on-flash partition table such
as RedBoot.
-#address-cells & #size-cells must both be present in the mtd device and be
-equal to 1.
+#address-cells & #size-cells must both be present in the mtd device. There are
+two valid values for both:
+<1>: for partitions that require a single 32-bit cell to represent their
+ size/address (aka the value is below 4 GiB)
+<2>: for partitions that require two 32-bit cells to represent their
+ size/address (aka the value is 4 GiB or greater).
Required properties:
- reg : The partition's offset and size within the mtd bank.
@@ -36,3 +40,31 @@ flash@0 {
reg = <0x0100000 0x200000>;
};
};
+
+flash@1 {
+ #address-cells = <1>;
+ #size-cells = <2>;
+
+ /* a 4 GiB partition */
+ partition@0 {
+ label = "filesystem";
+ reg = <0x00000000 0x1 0x00000000>;
+ };
+};
+
+flash@2 {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ /* an 8 GiB partition */
+ partition@0 {
+ label = "filesystem #1";
+ reg = <0x0 0x00000000 0x2 0x00000000>;
+ };
+
+ /* a 4 GiB partition */
+ partition@200000000 {
+ label = "filesystem #2";
+ reg = <0x2 0x00000000 0x1 0x00000000>;
+ };
+};