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authorHuang Shijie <b32955@freescale.com>2012-05-04 21:42:05 -0400
committerDavid Woodhouse <David.Woodhouse@intel.com>2012-05-13 23:22:19 -0500
commite10db1f00a5e3c2ec04d7fe26c7444dc55a59b19 (patch)
tree4e92b7759d1a7ab888fa4ed39c81d44a00b89fa1 /Documentation
parent279f08d4ef6548be4e2fa638245adebc77436e54 (diff)
downloadop-kernel-dev-e10db1f00a5e3c2ec04d7fe26c7444dc55a59b19.zip
op-kernel-dev-e10db1f00a5e3c2ec04d7fe26c7444dc55a59b19.tar.gz
mtd: gpmi: add device tree support to gpmi-nand
This patch just adds the DT support to gpmi-nand. Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Huang Shijie <shijie8@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/mtd/gpmi-nand.txt33
1 files changed, 33 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mtd/gpmi-nand.txt b/Documentation/devicetree/bindings/mtd/gpmi-nand.txt
new file mode 100644
index 0000000..1a5bbd3
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/gpmi-nand.txt
@@ -0,0 +1,33 @@
+* Freescale General-Purpose Media Interface (GPMI)
+
+The GPMI nand controller provides an interface to control the
+NAND flash chips. We support only one NAND chip now.
+
+Required properties:
+ - compatible : should be "fsl,<chip>-gpmi-nand"
+ - reg : should contain registers location and length for gpmi and bch.
+ - reg-names: Should contain the reg names "gpmi-nand" and "bch"
+ - interrupts : The first is the DMA interrupt number for GPMI.
+ The second is the BCH interrupt number.
+ - interrupt-names : The interrupt names "gpmi-dma", "bch";
+ - fsl,gpmi-dma-channel : Should contain the dma channel it uses.
+
+The device tree may optionally contain sub-nodes describing partitions of the
+address space. See partition.txt for more detail.
+
+Examples:
+
+gpmi-nand@8000c000 {
+ compatible = "fsl,imx28-gpmi-nand";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ reg = <0x8000c000 2000>, <0x8000a000 2000>;
+ reg-names = "gpmi-nand", "bch";
+ interrupts = <88>, <41>;
+ interrupt-names = "gpmi-dma", "bch";
+ fsl,gpmi-dma-channel = <4>;
+
+ partition@0 {
+ ...
+ };
+};
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