Re: [PATCH v4 0/6] tpm: Add driver for cr50

Heiko Stuebner
2019-08-27T00:58:53Z

Am Dienstag, 13. August 2019, 00:36:16 CEST schrieb Stephen Boyd:
> This patch series adds support for the the H1 secure microcontroller
> running cr50 firmware found on various recent Chromebooks. This driver
> is necessary to boot into a ChromeOS userspace environment. It
> implements support for several functions, including TPM-like
> functionality over a SPI interface.
>
> The last time this was series sent looks to be [1]. I've looked over the
> patches and review comments and tried to address any feedback that
> Andrey didn't address (really minor things like newlines). I've reworked
> the patches from the last version to layer on top of the existing TPM
> TIS SPI implementation in tpm_tis_spi.c. Hopefully this is more
> palatable than combining the two drivers together into one file.
>
> [1] https://lkml.kernel.org/r/1469757314-116169-1-git-send-email-apronin@chromium.org

Gave this a spin on a rk3399-gru-scarlet and it seems to have worked fine
and tpm2-tools was happy talking to it, so

Tested-by: Heiko Stuebner <heiko@sntech.de>

From looking through the patches everything also looks nice and peachy
but my tpm-insights are limited so I don't really feel comfortable with a RB.

Heiko