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SubjectRe: [PATCH] ARC: AXS10x: Add temporary quirk to reset ethernet IP
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On Wed, 2017-09-06 at 12:54 -0700, Vineet Gupta wrote:
> On 09/06/2017 11:21 AM, Eugeniy Paltsev wrote:
> > DW ethernet controller on AXS10x hangs sometimes after SW reset, so
> > add temporary quirk to reset DW ethernet controller IP core.
> > This quirk can be removed after axs10x reset driver
> > (see http://patchwork.ozlabs.org/patch/800273/)
> > or simple reset driver
> > (see https://patchwork.kernel.org/patch/9903375/)
> > will be available in upstream.
> >
> > Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
>
> Added to for-next !
>
> Thx,

Hi Vineet,

Please specify if you have plans to add this patch to 4.14?

I'm asking because we mostly need this quirk in 4.14 - I hope generic simple
reset driver will be available in 4.15.

Thanks.

>
> > ---
> >   arch/arc/plat-axs10x/axs10x.c | 7 +++++++
> >   1 file changed, 7 insertions(+)
> >
> > diff --git a/arch/arc/plat-axs10x/axs10x.c b/arch/arc/plat-axs10x/axs10x.c
> > index f1ac679..cf14ebc 100644
> > --- a/arch/arc/plat-axs10x/axs10x.c
> > +++ b/arch/arc/plat-axs10x/axs10x.c
> > @@ -111,6 +111,13 @@ static void __init axs10x_early_init(void)
> >   
> >    axs10x_enable_gpio_intc_wire();
> >   
> > + /*
> > +  * Reset ethernet IP core.
> > +  * TODO: get rid of this quirk after axs10x reset driver (or simple
> > +  * reset driver) will be available in upstream.
> > +  */
> > + iowrite32((1 << 5), (void __iomem *) CREG_MB_SW_RESET);
> > +
> >    scnprintf(mb, 32, "MainBoard v%d", mb_rev);
> >    axs10x_print_board_ver(CREG_MB_VER, mb);
> >   }
> >
>
>
--
 Eugeniy Paltsev
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