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    SubjectRe: [Lima] [RFC v1 0/1] drm: lima: devfreq and cooling device support
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    于 2019年12月24日 GMT+08:00 下午7:28:41, Martin Blumenstingl <martin.blumenstingl@googlemail.com> 写到:
    >Hi Alyssa,
    >
    >On Mon, Dec 16, 2019 at 4:48 PM Alyssa Rosenzweig
    ><alyssa.rosenzweig@collabora.com> wrote:
    >>
    >> If so much code is being duplicated over, I'm wondering if it makes
    >> sense for us to move some of the common devfreq code to core DRM
    >> helpers?
    >if you have any recommendation where to put it then please let me know
    >(I am not familiar with the DRM subsystem at all)
    >
    >my initial idea was that the devfreq logic needs the same information
    >that the scheduler needs (whether we're submitting something to be
    >executed, there was a timeout, ...).
    >however, looking at drivers/gpu/drm/scheduler/ this seems pretty
    >stand-alone so I'm not sure it should go there
    >also the Mali-4x0 GPUs have some "PMU" which *may* be used instead of

    It's optional. We cannot promise its existance on a given
    hardware, and I heard that at least on Allwinner H5 Mali PMU
    is broken.

    >polling the statistics internally
    >so this is where I realize that with my current knowledge I don't know
    >enough about lima, panfrost, DRM or the devfreq subsystem to get a
    >good idea where to put the code.
    >
    >
    >Martin
    >_______________________________________________
    >lima mailing list
    >lima@lists.freedesktop.org
    >https://lists.freedesktop.org/mailman/listinfo/lima

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