[PATCH v11 1/7] firmware: smccc: Add an Arm SMCCC bus

Catalin Marinas catalin.marinas at arm.com
Mon Sep 14 06:03:48 PDT 2026


On Mon, Sep 14, 2026 at 11:35:05AM +0530, Aneesh Kumar K.V (Arm) wrote:
> SMCCC-discovered firmware services are currently represented by separate
> platform devices, such as smccc_trng and arm-cca-dev. Those devices do not
> represent independent DT/ACPI-described platform resources; they are
> features of the SMCCC firmware interface.
> 
> Add an Arm SMCCC bus for services discovered through the SMCCC firmware
> interface. The bus provides SMCCC device and driver registration helpers,
> name-based matching, modalias generation, and a sysfs modalias attribute so

Nit: "name-based matching" is no longer true. The latest series uses
function ID.

Reviewed-by: Catalin Marinas <catalin.marinas at arm.com>



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