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    Subject[PATCH v3 2/2] eeprom: Add IDT 89HPESx driver dts-binding file
    Date
    IDT 89HPESx PCIe-switches exposes SMBus interface to have an access to
    the device CSRs and EEPROM. So to properly utilize the interface
    functionality, developer should declare a valid dts-file node, which
    would refer to the corresponding 89HPESx device.

    Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
    ---
    .../devicetree/bindings/misc/idt_89hpesx.txt | 41 ++++++++++++++++++++++
    1 file changed, 41 insertions(+)
    create mode 100644 Documentation/devicetree/bindings/misc/idt_89hpesx.txt

    diff --git a/Documentation/devicetree/bindings/misc/idt_89hpesx.txt b/Documentation/devicetree/bindings/misc/idt_89hpesx.txt
    index 0000000..469cc93
    --- /dev/null
    +++ b/Documentation/devicetree/bindings/misc/idt_89hpesx.txt
    @@ -0,0 +1,41 @@
    +EEPROM / CSR SMBus-slave interface of IDT 89HPESx devices
    +
    +Required properties:
    + - compatible : should be "<manufacturer>,<type>"
    + Basically there is only one manufacturer: idt, but some
    + compatible devices may be produced in future. Following devices
    + are supported: 89hpes8nt2, 89hpes12nt3, 89hpes24nt6ag2,
    + 89hpes32nt8ag2, 89hpes32nt8bg2, 89hpes12nt12g2, 89hpes16nt16g2,
    + 89hpes24nt24g2, 89hpes32nt24ag2, 89hpes32nt24bg2;
    + 89hpes12n3, 89hpes12n3a, 89hpes24n3, 89hpes24n3a;
    + 89hpes32h8, 89hpes32h8g2, 89hpes48h12, 89hpes48h12g2,
    + 89hpes48h12ag2, 89hpes16h16, 89hpes22h16, 89hpes22h16g2,
    + 89hpes34h16, 89hpes34h16g2, 89hpes64h16, 89hpes64h16g2,
    + 89hpes64h16ag2;
    + 89hpes12t3g2, 89hpes24t3g2, 89hpes16t4, 89hpes4t4g2,
    + 89hpes10t4g2, 89hpes16t4g2, 89hpes16t4ag2, 89hpes5t5,
    + 89hpes6t5, 89hpes8t5, 89hpes8t5a, 89hpes24t6, 89hpes6t6g2,
    + 89hpes24t6g2, 89hpes16t7, 89hpes32t8, 89hpes32t8g2,
    + 89hpes48t12, 89hpes48t12g2.
    + Current implementation of the driver doesn't have any device-
    + specific functionalities. But since each of them differs
    + by registers mapping, CSRs read/write restrictions can be
    + added in future.
    + - reg : I2C address of the IDT 89HPES device.
    +
    +Optional properties:
    + - read-only : Parameterless property disables writes to the EEPROM
    + - idt,eesize : Size of EEPROM device connected to IDT 89HPES i2c-master bus
    + (default value is 4096 bytes if option isn't specified)
    + - idt,eeaddr : Custom address of EEPROM device
    + (If not specified IDT 89HPESx device will try to communicate
    + with EEPROM sited by default address - 0x50)
    +
    +Example:
    + idt_pcie_sw@60 {
    + compatible = "idt,89hpes12nt3";
    + reg = <0x60>;
    + read-only;
    + idt,eesize = <65536>;
    + idt,eeaddr = <0x50>;
    + };
    --
    2.6.6
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