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    Subject[PATCH v4 2/5] dt-bindings: spi: add binding file for NXP FlexSPI controller
    Date
    Add binding file for NXP FlexSPI controller

    Signed-off-by: Yogesh Gaur <yogeshnarayan.gaur@nxp.com>
    ---
    Changes for v4:
    - Incorporated Rob review comments.
    Changes for v3:
    - Removed node property 'big-endian'.
    Changes for v2:
    - Incorporated Rob review comments.

    .../devicetree/bindings/spi/spi-nxp-fspi.txt | 39 ++++++++++++++++++++++
    1 file changed, 39 insertions(+)
    create mode 100644 Documentation/devicetree/bindings/spi/spi-nxp-fspi.txt

    diff --git a/Documentation/devicetree/bindings/spi/spi-nxp-fspi.txt b/Documentation/devicetree/bindings/spi/spi-nxp-fspi.txt
    new file mode 100644
    index 0000000..2cd67eb
    --- /dev/null
    +++ b/Documentation/devicetree/bindings/spi/spi-nxp-fspi.txt
    @@ -0,0 +1,39 @@
    +* NXP Flex Serial Peripheral Interface (FSPI)
    +
    +Required properties:
    + - compatible : Should be "nxp,lx2160a-fspi"
    + - reg : First contains the register location and length,
    + Second contains the memory mapping address and length
    + - reg-names : Should contain the resource reg names:
    + - fspi_base: configuration register address space
    + - fspi_mmap: memory mapped address space
    + - interrupts : Should contain the interrupt for the device
    +
    +Required SPI slave node properties:
    + - reg : There are two buses (A and B) with two chip selects each.
    + This encodes to which bus and CS the flash is connected:
    + - <0>: Bus A, CS 0
    + - <1>: Bus A, CS 1
    + - <2>: Bus B, CS 0
    + - <3>: Bus B, CS 1
    +
    +Example showing the usage of two SPI NOR slave devices on bus A:
    +
    +fspi0: spi@20c0000 {
    + compatible = "nxp,lx2160a-fspi";
    + reg = <0x0 0x20c0000 0x0 0x10000>, <0x0 0x20000000 0x0 0x10000000>;
    + reg-names = "fspi_base", "fspi_mmap";
    + interrupts = <0 25 0x4>; /* Level high type */
    + clocks = <&clockgen 4 3>, <&clockgen 4 3>;
    + clock-names = "fspi_en", "fspi";
    +
    + mt35xu512aba0: flash@0 {
    + reg = <0>;
    + ....
    + };
    +
    + mt35xu512aba1: flash@1 {
    + reg = <1>;
    + ....
    + };
    +};
    --
    2.7.4
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