Error observed: From dmesg: tpm tpm0: tpm_try_transmit: send(): error -62
OS Version:5.15.71
TPM Chip: ST33KTPM2XI2C
Connectivity: CPU->I2C-> TPM2.0
Driver: https://github.com/STMicroelectronics/TCG-TPM-I2C-DRV/tree/5.10.y
Step to reproduce the issue
Exercise tpm_pcrextend and tpm_pcrread and then issue tpm reset using GPIO pin of our platform.
and tried to access the tpm after tpm_startup. However observed below erro
Error observed: From dmesg: tpm tpm0: tpm_try_transmit: send(): error -62
unloading and loading the tpm_tis_i2c driver have access to tpm and issue disappeared and tpm is accessible.
However I have investigated tpm_tis_spi driver, even after resetting tpm through GPIO, No issues found.
Explored driver probe between i2c and spi, init sequence looks different as controller is different.
Pls help resolving the issue.
Incase this is not the correct forum, help me to reach out to correct community.
Thanks
Selvan
