[U-Boot] tpm TIS TPMv2.0

[Simon Glass]

Hi,

On 18 June 2018 at 03:47, Miquel Raynal <miquel.raynal at bootlin.com> wrote:
>
> Hi Martin,
>
> > > > Nevertheless one question: Why did you define another dts binding
> > > > instead of using that one what is already available on the Linux
> > > > kernel? There is "tcg,tpm_tis-spi"  already defined.
> > >
> > > I did not know this one, actually I mostly worked on U-Boot.
> > >
> > > However, this compatible is misleading as it does not make any difference
> > > between v1.x and v2.0 specification.
> >
> > But on the other hand it would give us a chance to determine the version at
> > runtime what could be beneficial for firmware updates. But this is a special case.
>
> We already discussed that point on the ML and decided to choose the
> version at compile time. I did not have the firmware update case in
> mind though.

I think we need to move to determining the version at run-time,
allowing people to build U-Boot with both versions if needed. This
will be helpful for testing in particular.

Regards,
Simon