Re: [PATCH v4 5/6] MIPS: CI20: Modify DTS to support high resolution timer for SMP.

[Zhou Yanjie]

Hi Paul,

On 2020å02æ15æ 02:37, Paul Cercueil wrote:
> Hi Zhou,
>
> I think you can move this patch before the clocksource one - it will 
> work with the old clocksource code and in generally it's a good idea 
> to ensure (if possible) that you can git-bisect without ending up with 
> a broken kernel.

OK, I will do it in v5.

> -Paul
>
>
> Le sam., fÃvr. 15, 2020 at 02:02, åçæ (Zhou Yanjie) 
> <zhouyanjie@xxxxxxxxxxxxxx> a Ãcrit :
> > Modify DTS, change tcu channel from 2 to 3, channel #0 and #1 for
> > per core local timer, #2 for clocksource.
> >
> > Tested-by: H. Nikolaus Schaller <hns@xxxxxxxxxxxxx>
> > Tested-by: Paul Boddie <paul@xxxxxxxxxxxxx>
> > Signed-off-by: åçæ (Zhou Yanjie) <zhouyanjie@xxxxxxxxxxxxxx>
> > ---
> >
> > Notes:
> >     v1->v2:
> >     No change.
> >
> >     v2->v3:
> >     No change.
> >
> >     v3->v4:
> >     Rebase on top of kernel 5.6-rc1.
> >
> >  arch/mips/boot/dts/ingenic/ci20.dts | 11 +++++++++--
> >  1 file changed, 9 insertions(+), 2 deletions(-)
> >
> > diff --git a/arch/mips/boot/dts/ingenic/ci20.dts 
> > b/arch/mips/boot/dts/ingenic/ci20.dts
> > index 37b9316..98c4c42 100644
> > --- a/arch/mips/boot/dts/ingenic/ci20.dts
> > +++ b/arch/mips/boot/dts/ingenic/ci20.dts
> > @@ -456,6 +456,13 @@
> >
> >  &tcu {
> >      /* 3 MHz for the system timer and clocksource */
> > -    assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER1>;
> > -    assigned-clock-rates = <3000000>, <3000000>;
> > +    assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER1>,
> > +                      <&tcu TCU_CLK_TIMER2>;
> > +    assigned-clock-rates = <3000000>, <3000000>, <750000>;
> > +
> > +    /*
> > +     * Use channel #0 and #1 for the per core system timer,
> > +     * and use channel #2 for the clocksource.
> > +     */
> > +    ingenic,pwm-channels-mask = <0xF8>;
> >  };
> > --
> > 2.7.4