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Bug#908438: [PATCH resend] ARM: dts: sun7i: Disable OOB IRQ for brcm wifi on Cubietruck and Banana Pro

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Control: tags -1 + patch

Hi,

On Sun, Sep 30, 2018 at 04:58:52PM +0200, Hans de Goede wrote:
> While doing some brcmfmac driver work I needed to test this also on some
> devicetree based boards. So I fired up the good old Cubietruck and when
> that would not work a Banana Pro.
> 
> With an unmodified 4.17 kernel both boards intermittently would come up
> with non working wifi with the following errors:
> 
>  brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
>  brcmfmac: brcmf_bus_started: failed: -110
>  brcmfmac: brcmf_attach: dongle is not responding: err=-110
>  brcmfmac: brcmf_sdio_firmware_callback: brcmf_attach failed

I confirm the observation on a Banana Pro booting the buster 4.19
kernel. The problem happend reliably for me. I also confirm that your
workaround solves the symptoms on my board.

> Using an OOB IRQ instead of the sdio-IRQ mechanism is mostly important to
> allow the MMC controller to go into runtime-suspend which is not really an
> issue on these boards since they are (usually) not battery powered.

I agree that this is a reasonable trade-off (power saving vs working
device).

Helmut

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Bug#908438: cubietruck wifi reversion Joey Hess <id@joeyh.name> - 2018-09-10 00:40 +0200
  Bug#908438: cubietruck wifi reversion Romain Perier <romain.perier@gmail.com> - 2018-09-27 14:00 +0200
    Bug#908438: cubietruck wifi reversion Joey Hess <id@joeyh.name> - 2018-09-28 23:40 +0200
  Bug#908438: Info received (Bug#908438: cubietruck wifi reversion) Joey Hess <id@joeyh.name> - 2018-09-29 06:50 +0200
  Bug#908438: cubietruck wifi reversion Hans de Goede <hdegoede@redhat.com> - 2018-09-30 17:10 +0200
    Bug#908438: cubietruck wifi reversion Salvatore Bonaccorso <carnil@debian.org> - 2019-12-18 23:00 +0100
      Bug#908438: cubietruck wifi reversion Hans de Goede <hdegoede@redhat.com> - 2019-12-20 12:20 +0100
        Bug#908438: cubietruck wifi reversion Salvatore Bonaccorso <carnil@debian.org> - 2019-12-21 23:10 +0100
          Bug#908438: Still there on 5.4.19-1~bpo10+1 (Was: Bug#908438: cubietruck wifi reversion) Jakob Haufe <sur5r@debian.org> - 2020-04-21 14:30 +0200
  Bug#908438: same problem on buster/testing Axel <axel.scheepers76@gmail.com> - 2019-02-21 20:40 +0100
  Bug#908438: [PATCH resend] ARM: dts: sun7i: Disable OOB IRQ for brcm wifi on Cubietruck and Banana Pro Helmut Grohne <helmut@subdivi.de> - 2019-12-18 18:10 +0100
  Processed: Re: [PATCH resend] ARM: dts: sun7i: Disable OOB IRQ  for brcm wifi on Cubietruck and Banana Pro "Debian Bug Tracking System" <owner@bugs.debian.org> - 2019-12-18 18:10 +0100

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