Messages in this thread | | | Subject | Re: Aw: Re: [tpmdd-devel] [PATCH] tpm: improve tpm_tis send() performance by ignoring burstcount | From | Ken Goldman <> | Date | Fri, 11 Aug 2017 17:32:12 -0400 |
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On 8/9/2017 5:00 PM, Peter Huewe wrote: > > Since we are the linux kernel, we do have to care for legacy > devices. And a system with LPC, PS2Mouse on SuperIO and a TPM are not > that uncommon. > > And heck, we even have support for 1.1b TPM devices....
Understood. However, remember that SuperIO is a 1980's device that predates the TPM. Since the TPM requires special LPC bus cycles, it's even less likely that an old chipset has an attached TPM.
> Interesting - let me check with Georg tomorrow. Unfortunately I do > not have access to my tcg mails from home (since I'm not working :), > but did you _explicitly_ talk about LPC and the system? I'm sure the > TPM does not care about the waitstates...
Yes, Infineon was one of the 3 TPM vendors who confirmed this.
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