Re: [PATCH v2] tpm_crb: Add idle support for the Arm FF-A start method

[Jarkko Sakkinen]

On Fri, Oct 24, 2025 at 12:42:00PM -0500, Stuart Yoder wrote:
> According to the CRB over FF-A specification [1], a TPM that implements
> the ABI must comply with the TCG PTP specification. This requires support
> for the Idle and Ready states.
> 
> This patch implements CRB control area requests for goIdle and
> cmdReady on FF-A based TPMs.
> 
> The FF-A message used to notify the TPM of CRB updates includes a
> locality parameter, which provides a hint to the TPM about which
> locality modified the CRB.  This patch adds a locality parameter
> to __crb_go_idle() and __crb_cmd_ready() to support this.
> 
> [1] https://developer.arm.com/documentation/den0138/latest/
> 
> Signed-off-by: Stuart Yoder <stuart.yoder@xxxxxxx>

A version of this went already to rc2.

BR, Jarkko