linux-kernel - Re: [PATCH v1 0/2] Restore voltages before rebooting of NVIDIA Tegra SoCs

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Message-ID: <e0d5fb63-ad3a-2e1d-52f0-9458598d6364@gmail.com>
Date:   Mon, 17 May 2021 00:32:15 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Michał Mirosław <mirq-linux@...e.qmqm.pl>
Cc:     Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Mark Brown <broonie@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Nikola Milosavljević <mnidza@...look.com>,
        linux-kernel@...r.kernel.org, linux-tegra@...r.kernel.org
Subject: Re: [PATCH v1 0/2] Restore voltages before rebooting of NVIDIA Tegra
 SoCs

15.05.2021 01:18, Dmitry Osipenko пишет:
> 15.05.2021 00:32, Michał Mirosław пишет:
>> On Tue, May 11, 2021 at 01:05:24AM +0300, Dmitry Osipenko wrote:
>>> Hi,
>>>
>>> Nikola Milosavljević reported that rebooting wasn't working properly on
>>> Asus Transformer TF101, which is Tegra20-based tablet device.  We found
>>> that TF101 and some other devices have bootloader which doesn't re-initialize
>>> voltages properly on a reboot.  The problem is resolved by ensuring that
>>> SoC voltages are at a levels that are suitable for the rebooting of the
>>> SoC before reboot happens. This series adds reboot handler to the Tegra
>>> regulator couplers, it bumps voltages on the reboot event.
>>
>> Which tree does this series apply to?
> 
> It was made on top of linux-next, but it should apply to 5.13 as well.
> What conflict do you get?
> 

I see where the problem is, there is no
tegra_soc_core_domain_state_synced() in upstream yet. I haven't rebased
patches properly, will be fixed in v2.