Re: [PATCH v14 01/18] irqchip/sifive-plic: Convert PLIC driver into a platform driver

Lad, Prabhakar
2024-04-03T15:49:42Z

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On Wed, Apr 3, 2024 at 3:17 PM Anup Patel <apatel@ventanamicro.com> wrote:
>
> On Wed, Apr 3, 2024 at 2:01 PM Lad, Prabhakar
> <prabhakar.csengg@gmail.com> wrote:
> >
> > Hi Anup,
> >
> > On Thu, Feb 22, 2024 at 9:41 AM Anup Patel <apatel@ventanamicro.com> wrote:
> > >
> > > The PLIC driver does not require very early initialization so convert
> > > it into a platform driver.
> > >
> > > After conversion, the PLIC driver is probed after CPUs are brought-up
> > > so setup cpuhp state after context handler of all online CPUs are
> > > initialized otherwise PLIC driver crashes for platforms with multiple
> > > PLIC instances.
> > >
> > > Signed-off-by: Anup Patel <apatel@ventanamicro.com>
> > > ---
> > > drivers/irqchip/irq-sifive-plic.c | 101 ++++++++++++++++++------------
> > > 1 file changed, 61 insertions(+), 40 deletions(-)
> > >
> > This patch seems to have broken things on RZ/Five SoC, after reverting
> > this patch I get to boot it back again on v6.9-rc2. Looks like there
> > is some probe order issue after switching to platform driver?
>
> Yes, this is most likely related to probe ordering based on your DT.
>
> Can you share the failing boot log and DT ?

non working case, https://paste.debian.net/1312947/
after reverting, https://paste.debian.net/1312948/
(attached is the DTB)

Cheers,
Prabhakar

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