[PATCH] arm: gic-v3-its: Add irq UCLASS_DRIVER

[Rayagonda Kokatanur]

Hi Stefan,

On Wed, Sep 9, 2020 at 1:57 PM Stefan Roese <sr at denx.de> wrote:
>
> On 09.09.20 10:14, Priyanka Jain wrote:
> > This is required to fix
> > "Error binding driver 'gic-v3': -96"
> > on lx2160a platforms.
> >
> > Signed-off-by: Priyanka Jain <priyanka.jain at nxp.com>
> > ---
> >   arch/arm/lib/gic-v3-its.c | 5 +++++
> >   1 file changed, 5 insertions(+)
> >
> > diff --git a/arch/arm/lib/gic-v3-its.c b/arch/arm/lib/gic-v3-its.c
> > index a1657e3853..6c6b7c430c 100644
> > --- a/arch/arm/lib/gic-v3-its.c
> > +++ b/arch/arm/lib/gic-v3-its.c
> > @@ -208,3 +208,8 @@ U_BOOT_DRIVER(gic_lpi_syscon) = {
> >       .id             = UCLASS_SYSCON,
> >       .of_match       = gic_lpi_syscon_ids,
> >   };
> > +
> > +UCLASS_DRIVER(irq) = {
> > +     .id = UCLASS_IRQ,
> > +     .name = "irq",
> > +};
>
> I tested this on LX2160 and get this error when booting into Linux:
>
>     Loading Device Tree to 000000009fff6000, end 000000009fffff3e ... OK
> gic_v3_its_get_gic_lpi_addr: failed to get gic-lpi-base syscon device
>
> Starting kernel ...
>
> [    0.000000] Booting Linux on physical CPU 0x0000000000 [0x410fd083]
>
> I did not look closely yet. Any idea whats going wrong here?

I added the following patch to use UCLASS_SYSCON to get gic lpi details.

commit id - 2ae7adc659f7fca9ea65df4318e5bca2b8274310

because the above commit is failing, hence we need this patch.
When I tested this I didn't face any issue hence didn't push the above change.
In my case it was failing only in the lower uboot version without this patch.

Best regards,
Rayagonda


>
> Thanks,
> Stefan