Re: [PATCH v11 6/7] firmware: smccc: arm-cca-guest: Bind the TSM provider to an SMCCC device

[Sudeep Holla]

On Mon, Sep 14, 2026 at 11:35:10AM +0530, Aneesh Kumar K.V (Arm) wrote:
> The Arm CCA guest TSM provider currently binds through the arm-cca-dev
> platform device. Like arm-smccc-trng, this device is not an independent
> platform resource; it is a software representation of the RSI firmware
> service discovered through SMCCC.
> 
> Move RSI discovery into the SMCCC firmware driver. When the SMCCC conduit
> is SMC and if RSI ABI version call is supported, create an arm-rsi-dev
> SMCCC device. Convert the Arm CCA guest TSM provider to an SMCCC driver so
> it binds to that discovered RSI service and keeps module autoloading
> through the SMCCC device id table.
> 
> Keep the old arm-cca-dev platform-device registration for now. Userspace
> has used that device as a Realm-guest indicator, so removing it is left to
> a follow-up patch that adds a replacement sysfs ABI.
> 
> Signed-off-by: Aneesh Kumar K.V (Arm) <aneesh.kumar@xxxxxxxxxx>
> ---

[...]

>  drivers/firmware/smccc/smccc.c          |  6 ++++

Reviewed-by: Sudeep Holla <sudeep.holla@xxxxxxxxxx>

-- 
Regards,
Sudeep