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Raspberry Pi CPUFreq Driver & Other Power Management Work For Linux 5.3

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  • M@GOid
    replied
    My Pi is ready to take advantage of those patches:

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  • trilean
    replied
    You don't. I've been running a custom 64bit kernel for well over a year now. If you use the kernel sources linked above and have a little experience in building kernels it's quite easy to get the Pi running in 64bit mode (hint: make bcmrpi3_defconfig). But -- I'm using Gentoo with a 64bit userland* so I don't know how hard it is on Raspbian. I'm not even sure ARM supports "mixed mode", switching between 64 and 32bit code like x86 does.

    * no, I'm not torturing my Pi by building gcc on it. I use a Rockpro64 for that and use binary packages on the Pi.
    Last edited by trilean; 07-10-2019, 11:47 AM.

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  • DoMiNeLa10
    replied
    This is pretty cool. I hope rpi will be mainlined some day, and I won't have to pick between a modern kernel with armv8 support, or working SPI.

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  • trilean
    replied
    Originally posted by Zajec View Post
    Michael: would you be able to summary current Rasperry Pi upstream support state? Unfortunately there are not more updates coming from the Eric at https://anholt.github.io/twivc4/
    It's getting better. My guess is that you'd be able to boot a vanilla kernel. 4.19.57 has 708 patches on top of vanilla and 5.2.0 needs 298. Though I'm not sure how much of this is for the π 4. IIRC it used to be less patches.

    https://github.com/raspberrypi/linux/commits/rpi-4.19.y
    https://github.com/raspberrypi/linux/commits/rpi-5.2.y

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  • elatllat
    replied
    Do you count x86 SBC (like the Odroid H2)?
    There are 248 arm64 dts files in the kernel.
    There are 14 listed on Wikipedia https://en.wikipedia.org/wiki/Compar...erating_system

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  • horizonbrave
    replied
    Is Raspberry the only SBC with proper Linux support (mainline)? Thanks

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  • Zajec
    replied
    Originally posted by -MacNuke- View Post
    While not a blog, work happens here now https://gitlab.freedesktop.org/anholt
    It seems to be mostly Mesa there, but that's something.

    I'm still wondering what's missing regarding other subsystems (like I didn't know about cpufreq until recently).

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  • -MacNuke-
    replied
    Originally posted by Zajec View Post
    Michael: would you be able to summary current Rasperry Pi upstream support state? Unfortunately there are not more updates coming from the Eric at https://anholt.github.io/twivc4/
    While not a blog, work happens here now https://gitlab.freedesktop.org/anholt

    Leave a comment:


  • Zajec
    replied
    Michael: would you be able to summary current Rasperry Pi upstream support state? Unfortunately there are not more updates coming from the Eric at https://anholt.github.io/twivc4/

    Leave a comment:


  • hotaru
    replied
    nice to see that running a mainline kernel on raspberry pi will finally be practical.

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