[PATCH v3 0/6] Add support for Renesas RZ/Five SoC

[Lad, Prabhakar]

Hi Anup,

On Mon, Dec 5, 2022 at 12:53 PM Anup Patel <anup at brainfault.org> wrote:
>
> On Thu, Dec 1, 2022 at 3:38 AM Prabhakar <prabhakar.csengg at gmail.com> wrote:
> >
> > From: Lad Prabhakar <prabhakar.mahadev-lad.rj at bp.renesas.com>
> >
> > Hi All,
> >
> > This patch series adds initial support to RZ/Five (R9A07G043F) SoC (which
> > is equipped with AX45MP AndesCore). Platform supports DT based probing.
> >
> > Linux support is currently being upstreamed the latest patchset can be
> > found at [0](currently in linux-next, DT bindings can be seen here)
> >
> > [0] https://patchwork.kernel.org/project/linux-renesas-soc/cover/20221028165921.94487-1-prabhakar.mahadev-lad.rj@bp.renesas.com/
> >
> > - PLIC binding - https://elixir.bootlin.com/linux/latest/source/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml#L57
> > - PLMT and PLICSW are not used by any driver in kernel hence DT bindings for it
> >   and is used in a similar manner as compared Andes AE350 [1]
> >   [1] https://github.com/andestech/linux/commits/v6.0.y_ae350-ax45mp/Documentation/devicetree/bindings
> > - SCIF binding - https://elixir.bootlin.com/linux/latest/source/Documentation/devicetree/bindings/serial/renesas,scif.yaml#L79
> >
> > Note:
> > - The PMA implementation is still in discussion [1] once its decided
> > corresponding patch to OpenSBI will be added to reserve the memory nodes
> > and vendor specific SBI EXT.
> > - U-boot from BSP release wont work with these patches, it requires additional
> >   patches (happy to share the u-boot branch if anyone wants to test this patchset)
> > - Patches apply on top of [2]
> >
> > [1] https://patchwork.kernel.org/project/linux-renesas-soc/patch/20221124172207.153718-8-prabhakar.mahadev-lad.rj@bp.renesas.com/
> > [2] https://patchwork.ozlabs.org/project/opensbi/cover/20221128083046.6799-1-peterlin@andestech.com/
> >
> > v2->v3
> > * Switched to generic platform
> > * Dropped all vendor specific SBI EXT
> > * Fixed review comments pointed by Bin for SCIF driver
> > * Updated doc
> >
> > RFC->v2
> > * Fixed comments pointed by Xiang W
> > * Included RB tag from Yu Chien Peter Lin for patch #3
> >
> > RFC: https://patchwork.ozlabs.org/project/opensbi/cover/20221028004042.135549-1-prabhakar.mahadev-lad.rj@bp.renesas.com/
> >
> > Below are the logs for U-Boot (2022.10), OpenSBI and Linux:
> > -----------------------------------------------------------
> > U-Boot SPL 2022.10-00194-g8fe71ee1da (Nov 30 2022 - 17:32:32 +0000)
> > Trying to boot from NOR
> >
> > OpenSBI v1.1-109-gfa85d48
> >    ____                    _____ ____ _____
> >   / __ \                  / ____|  _ \_   _|
> >  | |  | |_ __   ___ _ __ | (___ | |_) || |
> >  | |  | | '_ \ / _ \ '_ \ \___ \|  _ < | |
> >  | |__| | |_) |  __/ | | |____) | |_) || |_
> >   \____/| .__/ \___|_| |_|_____/|____/_____|
> >         | |
> >         |_|
> >
> > Platform Name             : Renesas SMARC EVK based on r9a07g043f01
> > Platform Features         : medeleg
> > Platform HART Count       : 1
> > Platform IPI Device       : andes_plicsw
> > Platform Timer Device     : andes_plmt @ 12000000Hz
> > Platform Console Device   : renesas_scif
> > Platform HSM Device       : ---
> > Platform PMU Device       : ---
> > Platform Reboot Device    : ---
> > Platform Shutdown Device  : ---
>
> Any plans for a system reboot/shutdown driver for OpenSBI ?
>
Not with the current patchest, but going forward we will.

I need to investigate this (can you please point me to an example for this).

BTW when do you plan to plan for the next OpenSBI release (I'll plan
accordingly to send a v4 for this series).

Cheers,
Prabhakar