Re: [PATCH v2 1/4] dt-bindings: tpm: Add compatible string atmel,attpm20p

Jarkko Sakkinen
2024-01-13T21:17:43Z

On Sat Jan 13, 2024 at 7:10 PM EET, Lukas Wunner wrote:
> Commit 4f2a348aa365 ("arm64: dts: imx8mm-venice-gw73xx: add TPM device")
> added a devicetree node for the Trusted Platform Module on certain
> Gateworks boards.
>
> The commit only used the generic "tcg,tpm_tis-spi" compatible string,
> but public documentation shows that the chip is an ATTPM20P from Atmel
> (nowadays Microchip):
> https://trac.gateworks.com/wiki/tpm
>
> Add the chip to the supported compatible strings of the TPM TIS SPI
> schema.
>
> For reference, a datasheet is available at:
> https://ww1.microchip.com/downloads/en/DeviceDoc/ATTPM20P-Trusted-Platform-Module-TPM-2.0-SPI-Interface-Summary-Data-Sheet-DS40002082A.pdf
>
> Signed-off-by: Lukas Wunner <lukas@wunner.de>
> Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
> Cc: Tim Harvey <tharvey@gateworks.com>
> ---
> Documentation/devicetree/bindings/tpm/tcg,tpm_tis-spi.yaml | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/Documentation/devicetree/bindings/tpm/tcg,tpm_tis-spi.yaml b/Documentation/devicetree/bindings/tpm/tcg,tpm_tis-spi.yaml
> index c3413b4..6cb2de7 100644
> --- a/Documentation/devicetree/bindings/tpm/tcg,tpm_tis-spi.yaml
> +++ b/Documentation/devicetree/bindings/tpm/tcg,tpm_tis-spi.yaml
> @@ -20,6 +20,7 @@ properties:
> compatible:
> items:
> - enum:
> + - atmel,attpm20p
> - infineon,slb9670
> - st,st33htpm-spi
> - st,st33zp24-spi

You should to send the patch set with Rob Herring as CC for syncing
up. Please do it for future versions, if there is need for additional
versions.

Rob, 3 out of 4 patches are TPM patches. Do you mind if I take all
four patches once the patch set is ready or do you want to pick this
patch (assuming that you think it is correctly implemented ofc)?

BR, Jarkko