[PATCH v4 2/3] irqchip: add T-HEAD C900 ACLINT SSWI driver

[Anup Patel]

Hi Thomas,

On Tue, Oct 29, 2024 at 1:16 PM Thomas Gleixner <tglx at linutronix.de> wrote:
>
> On Tue, Oct 22 2024 at 12:02, Inochi Amaoto wrote:
> > Add a driver for the T-HEAD C900 ACLINT SSWI device, which is an
> > enhanced implementation of the RISC-V ACLINT SSWI specification.
> > This device allows the system to send ipi via fast device interface.
> >
> > Signed-off-by: Inochi Amaoto <inochiama at gmail.com>
>
> Can someone from the RISCV folks please confirm that thtis is good to
> go?

The T-HEAD C900 ACLINT SSWI is not compliant to any RISC-V specification
so at this point it is a T-HEAD specific device. The RISC-V ACLINT SSWI
specification cited by this driver was never ratified by RISC-V international
in-favor of the ratified RISC-V AIA specification which has a much cleaner
way of doing IPI (as software injected MSIs) implemented by the IMSIC
driver and this also supports IPI virtualization.

Since this is a T-HEAD specific implementation, the description in all
patches of this series should be updated to replace references of the
RISC-V ACLINT SSWI specification with publicly available T-HEAD
documentation. Once, this is done, I think this series can go ahead.

Regards,
Anup