linux/Documentation/devicetree/bindings/security/tpm/tpm-i2c.txt
Linus Torvalds 1436ab068d Merge branch 'next-tpm' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull TPM updates from James Morris:
 "Here are the TPM updates from Jarkko for v4.14, which I've placed in
  their own branch (next-tpm). I ended up cherry-picking them as other
  changes had been made in Jarkko's branch after he sent me his original
  pull request.

  I plan on maintaining a separate branch for TPM (and other security
  subsystems) from now on.

  From Jarkko: 'Not much this time except a few fixes'"

* 'next-tpm' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  tpm: ibmvtpm: simplify crq initialization and document crq format
  tpm: replace msleep() with  usleep_range() in TPM 1.2/2.0 generic drivers
  Documentation: tpm: add powered-while-suspended binding documentation
  tpm: tpm_crb: constify acpi_device_id.
  tpm: vtpm: constify vio_device_id
2017-09-24 11:34:28 -07:00

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* Device Tree Bindings for I2C based Trusted Platform Module(TPM)
Required properties:
- compatible : 'manufacturer,model', eg. nuvoton,npct650
- label : human readable string describing the device, eg. "tpm"
- linux,sml-base : 64-bit base address of the reserved memory allocated for
the firmware event log
- linux,sml-size : size of the memory allocated for the firmware event log
Optional properties:
- powered-while-suspended: present when the TPM is left powered on between
suspend and resume (makes the suspend/resume
callbacks do nothing).
Example (for OpenPower Systems with Nuvoton TPM 2.0 on I2C)
----------------------------------------------------------
tpm@57 {
reg = <0x57>;
label = "tpm";
compatible = "nuvoton,npct650", "nuvoton,npct601";
linux,sml-base = <0x7f 0xfd450000>;
linux,sml-size = <0x10000>;
};