On Wed, Oct 26, 2016 at 11:04:37AM -0600, Jason Gunthorpe wrote:
> This provides an open firwmare driver binding for tpm_tis. OF
> is useful on arches where ACPI/PNP is not used.
>
> The tcg,tpm-tis-mmio register map interface is specified by the TCG.
>
> Signed-off-by: Jason Gunthorpe <jgunthorpe@xxxxxxxxxxxxxxxxxxxx>
> ---
> .../bindings/security/tpm/tpm_tis_mmio.txt | 23 ++++++++++++++++++++++
> drivers/char/tpm/Kconfig | 2 +-
> drivers/char/tpm/tpm_tis.c | 11 +++++++++++
> 3 files changed, 35 insertions(+), 1 deletion(-)
> create mode 100644 Documentation/devicetree/bindings/security/tpm/tpm_tis_mmio.txt
>
> v2 (from Mark)
> - Change name to tpm-tis-mmio (and fix c&p spi)
> - Include some valid chip names
>
> diff --git a/Documentation/devicetree/bindings/security/tpm/tpm_tis_mmio.txt b/Documentation/devicetree/bindings/security/tpm/tpm_tis_mmio.txt
> new file mode 100644
> index 000000000000..f9a853165cd0
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/security/tpm/tpm_tis_mmio.txt
> @@ -0,0 +1,23 @@
> +Trusted Computing Group MMIO Trusted Platform Module
> +
> +The TCG defines multi vendor standard for accessing a TPM chip, this
> +is the standard protocol defined to access the TPM via MMIO. Typically
> +this interface will be implemented over Intel's LPC bus.
> +
> +Refer to the 'TCG PC Client Specific TPM Interface Specification (TIS)' TCG
> +publication for the specification.
> +
> +Required properties:
> +
> +- compatible: should contain a string below for the chip, followed by
> + "tcg,tpm-tis-mmio". Valid chip strings are:
> + * "atmel,at97sc3204"
> +- reg: The location of the MMIO registers, should be at least 0x5000 bytes
> +- interrupt: An optional intzerrupt indicating command completion.
s/interrupt/interrupts/
> +
> +Example:
> +
> + tpm_tis@90000 {
> + compatible = "atmel,at97sc3204", "tcg,tpm-tis-mmio";
> + reg = <0x90000 0x5000>;
Missing the required interrupts property.
> + };
The indentation here is off, otherwise:
Rob
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