linux-kernel - Re: [PATCH v3 10/12] arm64: dts: allwinner: h6: Add IR receiver node

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Date:   Fri, 31 May 2019 00:25:32 +0200
From:   Clément Péron <peron.clem@...il.com>
To:     Clément Péron <peron.clem@...il.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        Chen-Yu Tsai <wens@...e.org>,
        devicetree <devicetree@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-sunxi <linux-sunxi@...glegroups.com>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-media@...r.kernel.org
Subject: Re: [PATCH v3 10/12] arm64: dts: allwinner: h6: Add IR receiver node

Hi Ondrej,

On Thu, 30 May 2019 at 16:55, Ondřej Jirman <megous@...ous.com> wrote:
>
> Hello Clément,
>
> On Tue, May 28, 2019 at 06:14:38PM +0200, Clément Péron wrote:
> > Allwinner H6 IR is similar to A31 and can use same driver.
> >
> > Add support for it.
> >
> > Signed-off-by: Clément Péron <peron.clem@...il.com>
> > ---
> >  arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi | 19 +++++++++++++++++++
> >  1 file changed, 19 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
> > index 16c5c3d0fd81..649cbdfe452e 100644
> > --- a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
> > +++ b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
> > @@ -647,6 +647,25 @@
> >                               pins = "PL0", "PL1";
> >                               function = "s_i2c";
> >                       };
> > +
> > +                     r_ir_rx_pin: r-ir-rx-pin {
> > +                             pins = "PL9";
> > +                             function = "s_cir_rx";
> > +                     };
> > +             };
> > +
> > +             r_ir: ir@...0000 {
> > +                             compatible = "allwinner,sun50i-h6-ir",
> > +                                          "allwinner,sun6i-a31-ir";
> > +                             reg = <0x07040000 0x400>;
> > +                             interrupts = <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>;
> > +                             clocks = <&r_ccu CLK_R_APB1_IR>,
> > +                                      <&r_ccu CLK_IR>;
> > +                             clock-names = "apb", "ir";
> > +                             resets = <&r_ccu RST_R_APB1_IR>;
> > +                             pinctrl-names = "default";
> > +                             pinctrl-0 = <&r_ir_rx_pin>;
> > +                             status = "disabled";
> >               };
>
> Please make a comment here, that this is known broken on some boards and may
> result IRQ flood if enabled. Otherwise noone will know.

I'm planning to send a v4 next week with the IRQ_NONE return as Maxime
suggested it.
https://github.com/clementperon/linux/tree/h6_ir_v4

But maybe we could also use the bit 5 of the IRQ status.

Regards, Clement

>
> thanks,
>         o.
>
> >               r_i2c: i2c@...1400 {
> > --
> > 2.20.1
> >
> >
> > _______________________________________________
> > linux-arm-kernel mailing list
> > linux-arm-kernel@...ts.infradead.org
> > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

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