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author | Jerry Snitselaar <jsnitsel@redhat.com> | 2019-09-02 07:27:35 -0700 |
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committer | Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> | 2019-11-12 21:45:36 +0200 |
commit | 5af4f1d5cb4dc875db4bf678c7168c3cc02e3afa (patch) | |
tree | 6d0cce2452b16557e5eedbb27ce6924ce64f4875 /Documentation/devicetree/bindings/security | |
parent | 15d0b22c01e6320241fe4d570e02de2935b842bf (diff) |
tpm_tis: override durations for STM tpm with firmware 1.2.8.28
There was revealed a bug in the STM TPM chipset used in Dell R415s.
Bug is observed so far only on chipset firmware 1.2.8.28
(1.2 TPM, device-id 0x0, rev-id 78). After some number of
operations chipset hangs and stays in inconsistent state:
tpm_tis 00:09: Operation Timed out
tpm_tis 00:09: tpm_transmit: tpm_send: error -5
Durations returned by the chip are the same like on other
firmware revisions but apparently with specifically 1.2.8.28 fw
durations should be reset to 2 minutes to enable tpm chip work
properly. No working way of updating firmware was found.
This patch adds implementation of ->update_durations method
that matches only STM devices with specific firmware version.
Cc: Peter Huewe <peterhuewe@gmx.de>
Cc: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Signed-off-by: Alexey Klimov <aklimov@redhat.com>
Signed-off-by: Jerry Snitselaar <jsnitsel@redhat.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> (!update_durations path)
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> (!update_durations path)
Diffstat (limited to 'Documentation/devicetree/bindings/security')
0 files changed, 0 insertions, 0 deletions