Re: [PATCH v4 1/2] tpm: devicetree: document properties for cr50

Jarkko Sakkinen
2016-08-09T10:08:36Z

On Thu, Jul 28, 2016 at 06:55:13PM -0700, Andrey Pronin wrote:
> Add TPM2.0 PTP FIFO compatible SPI interface for chips with Cr50
> firmware.
>
> Signed-off-by: Andrey Pronin <apronin@chromium.org>

Acked-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>

/Jarkko

> ---
> .../devicetree/bindings/security/tpm/cr50_spi.txt | 21 +++++++++++++++++++++
> 1 file changed, 21 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/security/tpm/cr50_spi.txt
>
> diff --git a/Documentation/devicetree/bindings/security/tpm/cr50_spi.txt b/Documentation/devicetree/bindings/security/tpm/cr50_spi.txt
> new file mode 100644
> index 0000000..2fbebd3
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/security/tpm/cr50_spi.txt
> @@ -0,0 +1,21 @@
> +* H1 Secure Microcontroller with Cr50 Firmware on SPI Bus.
> +
> +H1 Secure Microcontroller running Cr50 firmware provides several
> +functions, including TPM-like functionality. It communicates over
> +SPI using the FIFO protocol described in the PTP Spec, section 6.
> +
> +Required properties:
> +- compatible: Should be "google,cr50".
> +- spi-max-frequency: Maximum SPI frequency.
> +
> +Example:
> +
> +&spi0 {
> + status = "okay";
> +
> + cr50@0 {
> + compatible = "google,cr50";
> + reg = <0>;
> + spi-max-frequency = <800000>;
> + };
> +};
> --
> 2.6.6
>