The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/security/tpm/tpm_tis_spi.txt

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    1 Required properties:
    2 - compatible: should be one of the following
    3     "st,st33htpm-spi"
    4     "infineon,slb9670"
    5     "tcg,tpm_tis-spi"
    6 - spi-max-frequency: Maximum SPI frequency (depends on TPMs).
    7 
    8 Optional SoC Specific Properties:
    9 - pinctrl-names: Contains only one value - "default".
   10 - pintctrl-0: Specifies the pin control groups used for this controller.
   11 
   12 Example (for ARM-based BeagleBoard xM with TPM_TIS on SPI4):
   13 
   14 &mcspi4 {
   15 
   16 
   17         tpm_tis@0 {
   18 
   19                 compatible = "tcg,tpm_tis-spi";
   20 
   21                 spi-max-frequency = <10000000>;
   22         };
   23 };

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