>
> > Subject: Re: [PATCH 2/4] tmp/tpm_crb: fix Intel PTT hw bug during idle
> > state
> >
> > On Sat, Oct 08, 2016 at 04:56:39PM +, Winkler, Tomas wrote:
> > >
> > > >
> > > > On Sat, Oct 08, 2016 at 02:27:06PM +, Winkler, Tom
> Subject: Re: [PATCH 2/4] tmp/tpm_crb: fix Intel PTT hw bug during idle state
>
> On Sat, Oct 08, 2016 at 04:56:39PM +, Winkler, Tomas wrote:
> >
> > >
> > > On Sat, Oct 08, 2016 at 02:27:06PM +, Winkler, Tomas wrote:
> > > > >
> >
On Sat, Oct 08, 2016 at 10:42:03AM -0600, Jason Gunthorpe wrote:
> On Sat, Oct 08, 2016 at 07:00:06PM +0300, Jarkko Sakkinen wrote:
>
> > Rather you it would be better not to use cmdReady/goIdle at all if
> > kernel is not compiled with CONFIG_PM.
>
> It would be best practice to ensure the tpm i
On Sat, Oct 08, 2016 at 04:56:39PM +, Winkler, Tomas wrote:
>
> >
> > On Sat, Oct 08, 2016 at 02:27:06PM +, Winkler, Tomas wrote:
> > > >
> > > > On Sat, Oct 08, 2016 at 02:59:37PM +0300, Tomas Winkler wrote:
> > > > > From: "Winkler, Tomas"
> > > > >
> > > > > There is a HW bug in Skyla
> On Sat, Oct 08, 2016 at 07:00:06PM +0300, Jarkko Sakkinen wrote:
>
> > Rather you it would be better not to use cmdReady/goIdle at all if
> > kernel is not compiled with CONFIG_PM.
>
> It would be best practice to ensure the tpm is powered up no matter how the
> kernel is compiled.. The firmwa
>
> On Sat, Oct 08, 2016 at 02:27:06PM +, Winkler, Tomas wrote:
> > >
> > > On Sat, Oct 08, 2016 at 02:59:37PM +0300, Tomas Winkler wrote:
> > > > From: "Winkler, Tomas"
> > > >
> > > > There is a HW bug in Skylake, Kabylake, and Broxton PCH Intel PTT
> > > > device, where most of the regist
On Sat, Oct 08, 2016 at 07:00:06PM +0300, Jarkko Sakkinen wrote:
> Rather you it would be better not to use cmdReady/goIdle at all if
> kernel is not compiled with CONFIG_PM.
It would be best practice to ensure the tpm is powered up no matter
how the kernel is compiled.. The firmware may have lef
On Sat, Oct 08, 2016 at 02:27:06PM +, Winkler, Tomas wrote:
> >
> > On Sat, Oct 08, 2016 at 02:59:37PM +0300, Tomas Winkler wrote:
> > > From: "Winkler, Tomas"
> > >
> > > There is a HW bug in Skylake, Kabylake, and Broxton PCH Intel PTT
> > > device, where most of the registers in the contro
>
> On Sat, Oct 08, 2016 at 02:59:37PM +0300, Tomas Winkler wrote:
> > From: "Winkler, Tomas"
> >
> > There is a HW bug in Skylake, Kabylake, and Broxton PCH Intel PTT
> > device, where most of the registers in the control area except START,
> > REQUEST, CANCEL, and LOC_CTRL lost retention when t
On Sat, Oct 08, 2016 at 02:59:37PM +0300, Tomas Winkler wrote:
> From: "Winkler, Tomas"
>
> There is a HW bug in Skylake, Kabylake, and Broxton PCH Intel PTT device,
> where most of the registers in the control area except START, REQUEST,
> CANCEL, and LOC_CTRL lost retention when the device is i
From: "Winkler, Tomas"
There is a HW bug in Skylake, Kabylake, and Broxton PCH Intel PTT device,
where most of the registers in the control area except START, REQUEST,
CANCEL, and LOC_CTRL lost retention when the device is in the idle state.
Hence we need to bring the device to ready state before
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