Re: [PATCH 1/3] Add support for TPM devices over I2C bus

[Stefan Berger <stefanb@linux.ibm.com>]

On 3/21/23 01:29, Ninad Palsule wrote:
> This is a documentation change for I2C TPM device support.
> 
> Qemu already supports devices attached to ISA and sysbus.
> This drop adds support for the I2C bus attached TPM devices.
> 
> Signed-off-by: Ninad Palsule <ninad@linux.ibm.com>
> ---
>   docs/specs/tpm.rst | 5 ++++-
>   1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/docs/specs/tpm.rst b/docs/specs/tpm.rst
> index 535912a92b..79a79f0640 100644
> --- a/docs/specs/tpm.rst
> +++ b/docs/specs/tpm.rst
> @@ -21,11 +21,14 @@ QEMU files related to TPM TIS interface:
>    - ``hw/tpm/tpm_tis_common.c``
>    - ``hw/tpm/tpm_tis_isa.c``
>    - ``hw/tpm/tpm_tis_sysbus.c``
> + - ``hw/tpm/tpm_tis_i2c.c``
>    - ``hw/tpm/tpm_tis.h``
>   
>   Both an ISA device and a sysbus device are available. The former is
>   used with pc/q35 machine while the latter can be instantiated in the
> -Arm virt machine.
> +Arm virt machine. An I2C device support is also added which can be
> +instantiated in the arm based emulation machine. I2C model only supports
> +TPM2 protocol.


An I2C device is also supported for the Arm virt machine. This device only supports the TPM 2 protocol.

    Stefan

>   
>   CRB interface
>   -------------