linux-kernel - Re: [PATCH v8 00/19] Consolidate and improve NVIDIA Tegra CPUIDLE driver(s)

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Date:   Sat, 7 Dec 2019 22:52:16 +0100
From:   Michał Mirosław <mirq-linux@...e.qmqm.pl>
To:     Dmitry Osipenko <digetx@...il.com>
Cc:     Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Peter De Schrijver <pdeschrijver@...dia.com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        linux-pm@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v8 00/19] Consolidate and improve NVIDIA Tegra CPUIDLE
 driver(s)

On Tue, Dec 03, 2019 at 03:40:57AM +0300, Dmitry Osipenko wrote:
> Hello,
> 
> This series does the following:
> 
>   1. Unifies Tegra20/30/114 drivers into a single driver and moves it out
>      into common drivers/cpuidle/ directory.
> 
>   2. Enables CPU cluster power-down idling state on Tegra30.
> 
> In the end there is a quite nice clean up of the Tegra CPUIDLE drivers
> and of the Tegra's arch code in general. Please review, thanks!

I did a quick smoke test for this series on top of Linus' master:
 - rebuilding with the patches applied, CONFIG_ARM_TEGRA_CPUIDLE=n - works
 - building with CONFIG_ARM_TEGRA_CPUIDLE=y - doesn't boot

The hang is somewhere early in the boot process, before simplefb can
take the console and show any logs. If I get BOOTFB to work again I might
be able to get some more info.

Best Regards,
Michał Mirosław