Re: [PATCH v3] tpm: do not suspend/resume if power stays on

[Rob Herring]

On Fri, Mar 03, 2017 at 05:09:59PM +0100, Enric Balletbo i Serra wrote:
> From: Sonny Rao <sonnyrao@xxxxxxxxxxxx>
> 
> The suspend/resume behavior of the TPM can be controlled by setting
> "powered-while-suspended" in the DTS. This is useful for the cases
> when hardware does not power-off the TPM.
> 
> Signed-off-by: Sonny Rao <sonnyrao@xxxxxxxxxxxx>
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@xxxxxxxxxxxxx>
> ---
> Changes since v2:
>  Jarkko Sakkinen
>   - Add a new TPM_CHIP_FLAG_ALWAYS_POWERED flag instead of using a boolean variable.
>   - Remove a trailing newline.
> Changes since v1:
>  Jason Gunthorpe :
>   - Move the code to handle suspend/resume in the common chip code.
> 
>  Documentation/devicetree/bindings/security/tpm/tpm-i2c.txt | 6 ++++++

I would say this shouldn't be TPM specific, but looks like we already 
have a dts with this, so:

Acked-by: Rob Herring <robh@xxxxxxxxxx>

>  drivers/char/tpm/tpm-interface.c                           | 3 +++
>  drivers/char/tpm/tpm.h                                     | 1 +
>  drivers/char/tpm/tpm_of.c                                  | 3 +++
>  4 files changed, 13 insertions(+)