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-* Freescale Quad Serial Peripheral Interface(QuadSPI)
-
-Required properties:
- - compatible : Should be "fsl,vf610-qspi", "fsl,imx6sx-qspi",
- "fsl,imx7d-qspi", "fsl,imx6ul-qspi",
- "fsl,ls1021a-qspi"
- or
- "fsl,ls2080a-qspi" followed by "fsl,ls1021a-qspi",
- "fsl,ls1043a-qspi" followed by "fsl,ls1021a-qspi"
- - reg : the first contains the register location and length,
- the second contains the memory mapping address and length
- - reg-names: Should contain the reg names "QuadSPI" and "QuadSPI-memory"
- - interrupts : Should contain the interrupt for the device
- - clocks : The clocks needed by the QuadSPI controller
- - clock-names : Should contain the name of the clocks: "qspi_en" and "qspi".
-
-Optional properties:
- - fsl,qspi-has-second-chip: The controller has two buses, bus A and bus B.
- Each bus can be connected with two NOR flashes.
- Most of the time, each bus only has one NOR flash
- connected, this is the default case.
- But if there are two NOR flashes connected to the
- bus, you should enable this property.
- (Please check the board's schematic.)
- - big-endian : That means the IP register is big endian
-
-Example:
-
-qspi0: quadspi@40044000 {
- compatible = "fsl,vf610-qspi";
- reg = <0x40044000 0x1000>, <0x20000000 0x10000000>;
- reg-names = "QuadSPI", "QuadSPI-memory";
- interrupts = <0 24 IRQ_TYPE_LEVEL_HIGH>;
- clocks = <&clks VF610_CLK_QSPI0_EN>,
- <&clks VF610_CLK_QSPI0>;
- clock-names = "qspi_en", "qspi";
-
- flash0: s25fl128s@0 {
- ....
- };
-};
-
-Example showing the usage of two SPI NOR devices:
-
-&qspi2 {
- pinctrl-names = "default";
- pinctrl-0 = <&pinctrl_qspi2>;
- status = "okay";
-
- flash0: n25q256a@0 {
- #address-cells = <1>;
- #size-cells = <1>;
- compatible = "micron,n25q256a", "jedec,spi-nor";
- spi-max-frequency = <29000000>;
- reg = <0>;
- };
-
- flash1: n25q256a@1 {
- #address-cells = <1>;
- #size-cells = <1>;
- compatible = "micron,n25q256a", "jedec,spi-nor";
- spi-max-frequency = <29000000>;
- reg = <1>;
- };
-};