[PATCH v9 07/17] clk: tegra: Add Tegra124 DFLL clocksource platform driver

Kevin Hilman khilman at kernel.org
Tue May 26 11:17:22 PDT 2015


On Wed, May 13, 2015 at 7:58 AM, Mikko Perttunen
<mikko.perttunen at kapsi.fi> wrote:
> From: Tuomas Tynkkynen <ttynkkynen at nvidia.com>
>
> Add basic platform driver support for the fast CPU cluster DFLL
> clocksource found on Tegra124 SoCs. This small driver selects the
> appropriate Tegra124-specific characterization data and integration
> code. It relies on the DFLL common code to do most of the work.
>
> Signed-off-by: Tuomas Tynkkynen <ttynkkynen at nvidia.com>
> Signed-off-by: Mikko Perttunen <mikko.perttunen at kapsi.fi>
> Acked-by: Michael Turquette <mturquette at linaro.org>

Various boot failures on non-tegra platforms (sunxi, omap) started
showing up in next-20150522, and still exist in next-20150525[1] and
today I bisected them down to this patch.

I didn't look closely, but I"m guessing the module_init() function
here needs some compatible checking so it's not actually executed on
non-tegra platforms.

I confirmed that reverting this patch on top of next-20150525 gets
both the sunxi and omap platforms booting again.

Kevin

[1] http://kernelci.org/boot/all/job/next/kernel/next-20150525/



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