Re: [PATCH v12 2/7] firmware: hwrng: arm_smccc_trng: Register as an SMCCC device

Catalin Marinas [off-list ref] writes:

On Mon, Sep 21, 2026 at 11:08:02AM +0530, Aneesh Kumar K.V (Arm) wrote:

quoted

The SMCCC TRNG interface is a firmware-provided SMCCC service rather than a
standalone platform device. Now that the SMCCC core has an SMCCC bus,
create an arm-smccc-trng device for the discovered TRNG service and convert
the hwrng driver to an SMCCC driver.

The SMCCC id table preserves module autoloading for systems where the TRNG
driver is built as a module.

The sysfs device path changes from the old smccc_trng platform-device path
to an arm-smccc device path. No known userspace dependency on the old path
was found; a Debian Code Search lookup for the existing platform-device
name/path did not find any users.

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Jonathan Cameron <redacted>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Tested-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Aneesh Kumar K.V (Arm) <aneesh.kumar@kernel.org>
---
 arch/arm/include/asm/archrandom.h       |  2 +-
 arch/arm64/include/asm/archrandom.h     |  2 +-
 drivers/char/hw_random/arm_smccc_trng.c | 32 ++++++++-----
 drivers/firmware/smccc/smccc.c          | 62 +++++++++++++++++++++----
 4 files changed, 76 insertions(+), 22 deletions(-)

I asked you two times already to cc the hw_random maintainers. Not
adding them again but not merging this stuff without their ack either.
So, up to you.

Sorry, I missed that. I'll repost and Cc the hw_random maintainers.

-aneesh