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AM6442: Enabling fTPM

Muktabh Anchlia
Prodigy 130 points
Part Number: AM6442


Hello,

I am trying to enable fTPM device driver (char/tpm_ftpm_tee) on the AM6442 SK board. I have enabled OPTEE, TPM and fTPM support in Kernel config. When I boot using the new kernel, the /dev/tee0 and /dev/teepriv0 devices are created, but no /dev/tpm0. I would like to know if there are additional steps required to do the same.

Thanks and Regards

  • 0
    TI__Guru**** 174221 points

    Hi,

    I looked up the kernel source code in Processor SDK for AM64x, the ftpm driver is not TI platform dependent, the driver seems depending on kernel config TCG_FTPM_TEE and device tree bindings with compatible "microsoft,ftpm". However I don't find the DT binding document for "microsoft,ftpm" in kernel, and there is no any reference in kernel using this driver. Since ftpm is not a TI driver, we won't be able to provide any further details on enabling it. Recommend you asking the Linux community for support.