linux-kernel - Re: [linux-sunxi] [PATCH 1/4] ARM: dts: sun8i-a83t-tbs-a711: OOB WiFi interrupt doesn't work

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Date:   Sun, 23 Feb 2020 11:02:25 +0100
From:   Ondřej Jirman <megous@...ous.com>
To:     Chen-Yu Tsai <wens@...e.org>
Cc:     linux-sunxi <linux-sunxi@...glegroups.com>,
        Maxime Ripard <mripard@...nel.org>,
        Tomas Novotny <tomas@...otny.cz>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        "moderated list:ARM/Allwinner sunXi SoC support" 
        <linux-arm-kernel@...ts.infradead.org>,
        open list <linux-kernel@...r.kernel.org>,
        Arend van Spriel <arend.vanspriel@...adcom.com>
Subject: Re: [linux-sunxi] [PATCH 1/4] ARM: dts: sun8i-a83t-tbs-a711: OOB
 WiFi interrupt doesn't work

On Sun, Feb 23, 2020 at 12:03:46PM +0800, Chen-Yu Tsai wrote:
> On Sun, Feb 23, 2020 at 11:26 AM Chen-Yu Tsai <wens@...e.org> wrote:
> >
> > Hi,
> >
> >
> > On Sun, Feb 23, 2020 at 6:32 AM Ondrej Jirman <megous@...ous.com> wrote:
> > >
> > > It just causes a constant rate of 5000 interrupts per second for both
> > > GPIO and MMC, even if nothing is happening. Rely on in-band interrupts
> > > instead.
> > >
> > > Fixes: 0e23372080def7bb ("arm: dts: sun8i: Add the TBS A711 tablet devicetree")
> > > Signed-off-by: Ondrej Jirman <megous@...ous.com>
> >
> > What WiFi chip/module does this use? It might be worth asking Broadcom
> > people to help with this and fix the driver.
> 
> Based on the comments in the device tree file, it uses an AP6210, which
> is a BCM43362 inside for SDIO-based WiFi. There is a recent fix in 5.6-rc1
> for this,
> 
>     8c8e60fb86a9 brcmfmac: sdio: Fix OOB interrupt initialization on brcm43362
> 
> which seems to fix things for me. Could you try it on your end?

Interesting, thanks for finding out! I'll test it.

I think it will work, since my tablet started having overheating issue recently,
and I tracked it down to this.

regards,
	o.

> ChenYu
> 
> 
> > ChenYu
> >
> > > ---
> > >  arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts | 3 ---
> > >  1 file changed, 3 deletions(-)
> > >
> > > diff --git a/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts b/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
> > > index 2fd31a0a0b344..ee5ce3556b2ad 100644
> > > --- a/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
> > > +++ b/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
> > > @@ -214,9 +214,6 @@ &mmc1 {
> > >         brcmf: wifi@1 {
> > >                 reg = <1>;
> > >                 compatible = "brcm,bcm4329-fmac";
> > > -               interrupt-parent = <&r_pio>;
> > > -               interrupts = <0 3 IRQ_TYPE_LEVEL_LOW>; /* PL3 WL_WAKE_UP */
> > > -               interrupt-names = "host-wake";
> > >         };
> > >  };
> > >
> > > --
> > > 2.25.1
> > >
> > > --
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