MTD: pxa3xx-nand: add devicetree bindings

This patch contains a hack to get the DMA resources of the device when
probed from a devicetree node. This can be removed once a generic DMA
controller framework lands.

A mtd_part_parser_data is passed mtd_device_parse_register which
contains a reference to the device node, so MTD partitions can be
added as children.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>

1 files changed, 31 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/mtd/pxa3xx-nand.txt b/Documentation/devicetree/bindings/mtd/pxa3xx-nand.txt
new file mode 100644
index 000000000000..f1421e2bbab7
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/pxa3xx-nand.txt
@@ -0,0 +1,31 @@
+PXA3xx NAND DT bindings
+
+Required properties:
+
+ - compatible:          Should be "marvell,pxa3xx-nand"
+ - reg:                 The register base for the controller
+ - interrupts:          The interrupt to map
+ - #address-cells:      Set to <1> if the node includes partitions
+
+Optional properties:
+
+ - marvell,nand-enable-arbiter: Set to enable the bus arbiter
+ - marvell,nand-keep-config:    Set to keep the NAND controller config as set
+                                by the bootloader
+ - num-cs:                      Number of chipselect lines to usw
+
+Example:
+
+        nand0: nand@43100000 {
+                compatible = "marvell,pxa3xx-nand";
+                reg = <0x43100000 90>;
+                interrupts = <45>;
+                #address-cells = <1>;
+
+                marvell,nand-enable-arbiter;
+                marvell,nand-keep-config;
+                num-cs = <1>;
+
+                /* partitions (optional) */
+        };
+