Am Samstag, 13. Juni 2015, 15:09:32 schrieb Krzysztof Kozlowski: > W dniu 12.06.2015 o 22:53, Thomas Pietrowski pisze: > > Hello again, > > > > first after fixing my booting problems I now get different warnings after > > boot. - config: http://pastebin.com/MHUu51pF > > - log: http://pastebin.com/9YMgMmFL > > - repo: arm-soc > > I read the last days that you are still working on the clk drivers, so > > as these warnings appear to be related to that you might be interested > > on them. > > You mean the warnings on clocks (starting from runtime PM and FIMC)? I > hit them also on Trats2. Just need to find a person (or time) who will > fix it... > Ok then. I just don't remember that I had them when using 3.19.x code by Tobias Jakobi before. I'll test his latest code later. The reason I wanted to use code from arm-soc is that I thought his changes/patches are already here after two linux releases. However, in the past the CPU fan wasn't working at all (0 RPM) and /sys/class/thermal/[...]/temp reported more than 70°C (was compiling a newer kernel code at this moment). Don't believe it was healthy.
> > Additionally my CPU fan it running at full RPM all the time. I checked > > the temperature just to be sure and it says it's 20°C. Is this problem > > known or can I help debugging it? > > After quick look at DTS, I think that on Exynos4412 Odroid family there > is no fan defined. No fan so cooling is done only through CPU > frequencies. The fan probably works on default setting from bootloader > or default register values. > Just something at this point which comes to my mind. Imagine we have the fan regulation/driver working. What happens when we simply disconnect the fan and the CPU hits higher temperatures? Will it still work on high frequencies or will it self-protect by using lower CPU frequencies? CPU throttling and CPU cooling should be two seperate processes, isn't it? > The stock Odroid U3 has only passive cooler. > That's true, but they (hardkernel) also sell a optional fan and the socket for is is still there when buying the board. See, http://www.hardkernel.com/main/products/prdt_info.php?g_code=G138760358261 for the optional fan. Therefore, it is not a hardware hack or whatever. > Probably support for fan could be added... If you would like to take > care of it, go for it! :) > I just browsed Tobias Jakobi's "linux-odroid" repository at github and found out, that work is already made on that by people at Samsung :) https://github.com/tobiasjakobi/linux-odroid/commit/a2236c8f74321357e505be0a054032325a7e3a5d Hopefully both are also in this mailing list and interested in getting this upstream. In the mean time I'll test it based on tobiasjakobi's codebase again. Regards, Thomas -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
