spi-fsl-qspi.txt

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    1 * Freescale Quad Serial Peripheral Interface(QuadSPI)
    2 
    3 Required properties:
    4   - compatible : Should be "fsl,vf610-qspi", "fsl,imx6sx-qspi",
    5                  "fsl,imx7d-qspi", "fsl,imx6ul-qspi",
    6                  "fsl,ls1021a-qspi", "fsl,ls2080a-qspi"
    7                  or
    8                  "fsl,ls1043a-qspi" followed by "fsl,ls1021a-qspi"
    9   - reg : the first contains the register location and length,
   10           the second contains the memory mapping address and length
   11   - reg-names: Should contain the reg names "QuadSPI" and "QuadSPI-memory"
   12   - interrupts : Should contain the interrupt for the device
   13   - clocks : The clocks needed by the QuadSPI controller
   14   - clock-names : Should contain the name of the clocks: "qspi_en" and "qspi".
   15 
   16 Required SPI slave node properties:
   17   - reg: There are two buses (A and B) with two chip selects each.
   18          This encodes to which bus and CS the flash is connected:
   19                 <0>: Bus A, CS 0
   20                 <1>: Bus A, CS 1
   21                 <2>: Bus B, CS 0
   22                 <3>: Bus B, CS 1
   23 
   24 Example:
   25 
   26 qspi0: quadspi@40044000 {
   27         compatible = "fsl,vf610-qspi";
   28         reg = <0x40044000 0x1000>, <0x20000000 0x10000000>;
   29         reg-names = "QuadSPI", "QuadSPI-memory";
   30         interrupts = <0 24 IRQ_TYPE_LEVEL_HIGH>;
   31         clocks = <&clks VF610_CLK_QSPI0_EN>,
   32                 <&clks VF610_CLK_QSPI0>;
   33         clock-names = "qspi_en", "qspi";
   34 
   35         flash0: s25fl128s@0 {
   36                 #address-cells = <1>;
   37                 #size-cells = <1>;
   38                 compatible = "spansion,s25fl128s", "jedec,spi-nor";
   39                 spi-max-frequency = <50000000>;
   40                 reg = <0>;
   41         };
   42 };
   43 
   44 Example showing the usage of two SPI NOR devices on bus A:
   45 
   46 &qspi2 {
   47         pinctrl-names = "default";
   48         pinctrl-0 = <&pinctrl_qspi2>;
   49         status = "okay";
   50 
   51         flash0: n25q256a@0 {
   52                 #address-cells = <1>;
   53                 #size-cells = <1>;
   54                 compatible = "micron,n25q256a", "jedec,spi-nor";
   55                 spi-max-frequency = <29000000>;
   56                 reg = <0>;
   57         };
   58 
   59         flash1: n25q256a@1 {
   60                 #address-cells = <1>;
   61                 #size-cells = <1>;
   62                 compatible = "micron,n25q256a", "jedec,spi-nor";
   63                 spi-max-frequency = <29000000>;
   64                 reg = <1>;
   65         };
   66 };

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/spi/spi-fsl-qspi.txt

FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/spi/spi-fsl-qspi.txt