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u-boot/doc/device-tree-bindings/mtd/altera_qspi.txt
Thomas Chou 38a0f36e83 mtd: add altera quadspi driver
Add Altera Generic Quad SPI Controller support. The controller
converts SPI NOR flash to parallel flash interface. So it is
not like other SPI flash, but rather like CFI flash.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
2015-11-12 08:26:58 +08:00

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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:
1. EPCS: epcs16, epcs64, epcs128
2. EPCQ: epcq16, epcq32, epcq64, epcq128, epcq256, epcq512, epcq1024
3. EPCQ-L: epcql256, epcql512, epcql1024
- #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: epcq512@0 {
compatible = "altr,epcq512";
#address-cells = <1>;
#size-cells = <1>;
};
};