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In-Reply-To: <05ab43bd-0033-fc45-a992-0a20b91a0e74@broadcom.com>
From:   Vanessa Ayumi Maegima <van.ayumi@gmail.com>
Date:   Thu, 15 Nov 2018 15:04:11 -0200
Message-ID: <CABACg+wyLwYQna+HDJyjNA8V1_3cSoMRDyiBpq=K+UXVXDrtBQ@mail.gmail.com>
Subject: Re: AP6335 with mainline kernel
To:     Arend van Spriel <arend.vanspriel@broadcom.com>
Cc:     Vanessa Maegima <vanessa.maegima@nxp.com>,
        Fabio Estevam <festevam@gmail.com>,
        linux-wireless@vger.kernel.org, embed3d@gmail.com,
        cameron@paloaltoinnovation.com
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Precedence: bulk

Hi Arend,
On Wed, Nov 14, 2018 at 9:41 AM Arend van Spriel
<arend.vanspriel@broadcom.com> wrote:
>
> + Cameron
>
> On 3/26/2018 3:34 PM, Vanessa Maegima wrote:
> > On Seg, 2018-03-26 at 09:24 -0300, Vanessa Maegima wrote:
> >> Hi Arend,
> >>
> >>>
> >>> Here's the hexdump: http://code.bulix.org/trv3o7-306254
> >>>
> >> The link above provides the hexdump from the html nvram, which makes
> >> wifi work on pico-imx7d.
> >>
> >> I also got the hexdump of the nvram file provided by TechNexion for
> >> comparison, which returns the error "brcmfmac: brcmf_sdio_htclk: HT
> >> Avail timeout (1000000): clkctl 0x50": http://code.bulix.org/mw4x62-3
> >> 09
> >> 095
> >
> > Fixing second URL: http://code.bulix.org/mw4x62-309095
>
> Hi Vanessa,
>
> It has been a while, but recently I was contacted by Cameron who was
> facing same/similar issue. After some email exchanges with him he
> uncovered that the problem with the TechNexion nvram file is with the
> boardflags3 entry. On my suggestion he change the value from 0x08101188
> to 0x101188. The dropped bit forces the clock hierarchy in the chip to
> select external LPO. I found some schematics showing a 32kHz signal
> hooked up to the LPO input coming from GPIO1_IO03. Could it be that it
> is not properly setup? Devicetree maybe?
>
> Regards,
> Arend
>

Thanks for the suggestion. I will investigate this on my side next
week when I have my Pico board and I will let you know any feedback.

Best Regards,
Vanessa