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 12:03:46 +0800
From:   Chen-Yu Tsai <wens@...e.org>
To:     Ondřej Jirman <megous@...ous.com>
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 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?

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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