From: VIET NGA DAO <vn...@altera.com>
commit 990acaf14261901a67c96f2effab389556d87c60 from
https://github.com/altera-opensource/linux-socfpga.git
This patch adds Device Tree Binding for Altera Quad SPI Driver.
Signed-off-by: Viet Nga Dao <vn...@altera.com>
Signed-off-by: Ooi, Joyce <joyce....@intel.com>
Signed-off-by: Meng Li <meng...@windriver.com>
---
.../devicetree/bindings/mtd/altera_quadspi.txt | 42 ++++++++++++++++++++++
1 file changed, 42 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mtd/altera_quadspi.txt
diff --git a/Documentation/devicetree/bindings/mtd/altera_quadspi.txt
b/Documentation/devicetree/bindings/mtd/altera_quadspi.txt
new file mode 100644
index 0000000..626b602
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/altera_quadspi.txt
@@ -0,0 +1,42 @@
+* MTD Altera QUADSPI driver
+
+Required properties:
+- compatible: Should be "altr,quadspi-1.0"
+- reg: Address and length of the register set for the device. It contains
+ the information of registers in the same order as described by reg-names
+- reg-names: Should contain the reg names
+ "avl_csr": Should contain the register configuration base address
+ "avl_mem": Should contain the data base address
+- #address-cells: Must be <1>.
+- #size-cells: Must be <0>.
+- flash device tree subnode, there must be a node with the following fields:
+ - compatible: Should contain the flash name
+ - #address-cells: please refer to /mtd/partition.txt
+ - #size-cells: please refer to /mtd/partition.txt
+ For partitions inside each flash, please refer to /mtd/partition.txt
+
+Example:
+
+ quadspi_controller_0: quadspi@0x180014a0 {
+ compatible = "altr,quadspi-1.0";
+ reg = <0x180014a0 0x00000020>,
+ <0x14000000 0x04000000>;
+ reg-names = "avl_csr", "avl_mem";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ flash0: epcq256@0 {
+ compatible = "epcq256-nonjedec";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ partition@0 {
+ /* 16 MB for raw data. */
+ label = "EPCQ Flash 0 raw data";
+ reg = <0x0 0x1000000>;
+ };
+ partition@1000000 {
+ /* 16 MB for jffs2 data. */
+ label = "EPCQ Flash 0 JFFS 2";
+ reg = <0x1000000 0x1000000>;
+ };
+ };
+ }; //end quadspi@0x180014a0 (quadspi_controller_0)
--
2.7.4
--
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