Re: [PATCH 5/6] drivers: tpm: atmel_twi: implement get_desc operation

10 Nov 2021

      On Thu, Nov 4, 2021, at 6:39 PM, Ilias Apalodimas wrote:
...
Hi Matthew,
On Thu, 4 Nov 2021 at 03:14, Mathew McBride matt@traverse.com.au wrote:
...
static int tpm_atmel_twi_get_desc(struct udevice *dev, char *buf, int size)
 {

  return 0;

  if (size < 50)

          return -ENOSPC;

  return snprintf(buf, size, "Atmel 1.2 TPM (%s)", dev->name);

Is there anything more helpful we can print on that? Device ID,
manufacturer ID maybe?
Perhaps the DT compatible would be useful?
=> tpm device
device 0: atmel,at97sc3204t TPM 1.2 (tpm@29)
tpm_version under Linux provides this, but it requires talking to the TPM over TIS:
$ tpm_version
TPM 1.2 Version Info:
  Chip Version:        1.2.66.16
  Spec Level:          2
  Errata Revision:     3
  TPM Vendor ID:       ATML
  TPM Version:         01010000
  Manufacturer Info:   41544d4c
...
Regards
/Ilias
...
}
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