linux-kernel - Re: [PATCH v6 00/41] ARM: davinci: convert to common clock framework

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Date:   Tue, 23 Jan 2018 19:10:43 +0100
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Adam Ford <aford173@...il.com>
Cc:     David Lechner <david@...hnology.com>, linux-clk@...r.kernel.org,
        devicetree <devicetree@...r.kernel.org>,
        linux-arm-kernel@...ts.infradead.org,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...eaurora.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Sekhar Nori <nsekhar@...com>,
        Kevin Hilman <khilman@...nel.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v6 00/41] ARM: davinci: convert to common clock framework

2018-01-23 18:03 GMT+01:00 Adam Ford <aford173@...il.com>:
> On Tue, Jan 23, 2018 at 10:06 AM, David Lechner <david@...hnology.com> wrote:
>> On 01/23/2018 10:03 AM, David Lechner wrote:
>>>
>>> You can see if the clock is enabled by running:
>>>
>>>      cat /sys/kernel/debug/clk/clk_summary
>>>
>>
>> I just realized if you can't boot, you can't do this. :-/
>
> I can boot with the latest set in your git repo, but the Ethernet
> doesn't apparently fully operate.  I don't get errors, but I cannot
> get a dhcp address.
>
> I'll try to do a more exhaustive test later today to get an idea of
> what works and what doesn't.  When I ran my basic tests, I just did a
> feel-good boot test (and reboot test)
>
> adam

FYI: manually calling clk_prepare_enable() in the davinci_mdio driver
seems to at least fix the ethernet. In master branch it's done by
pm_runtime_get_sync() (in davinci_mdio_reset()). However I'm still
getting several oopses and WARNs so there's some more work to do.

Thanks,
Bartosz