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SubjectRe: [RFC v1 0/1] drm: lima: devfreq and cooling device support
On Mon, Dec 16, 2019 at 5:12 AM Martin Blumenstingl
<martin.blumenstingl@googlemail.com> wrote:
>
> This is my attempt at adding devfreq (and cooling device) support to
> the lima driver.
> I didn't have much time to do in-depth testing. However, I'm sending
> this out early because there are many SoCs with Mali-400/450 GPU so
> I want to avoid duplicating the work with somebody else.
>
> The code is derived from panfrost_devfreq.c which is why I kept the
> Collabora copyright in lima_devfreq.c. Please let me know if I should
> drop this or how I can make it more clear that I "borrowed" the code
> from panfrost.

I think it's more common to have separate copyright notices. First you
have yours, then a second paragraph stating the code is derived from
foo, and then attach the copyright statements for foo.

ChenYu

> I am seeking comments in two general areas:
> - regarding the integration into the existing lima code
> - for the actual devfreq code (I had to adapt the panfrost code
> slightly, because lima uses a bus and a GPU/core clock)
>
> My own TODO list includes "more" testing on various Amlogic SoCs.
> So far I have tested this on Meson8b and Meson8m2 (which both have a
> GPU OPP table defined). However, I still need to test this on a GXL
> board (which is currently missing the GPU OPP table).
>
>
> Martin Blumenstingl (1):
> drm/lima: Add optional devfreq support
>
> drivers/gpu/drm/lima/Kconfig | 1 +
> drivers/gpu/drm/lima/Makefile | 3 +-
> drivers/gpu/drm/lima/lima_devfreq.c | 162 ++++++++++++++++++++++++++++
> drivers/gpu/drm/lima/lima_devfreq.h | 15 +++
> drivers/gpu/drm/lima/lima_device.c | 4 +
> drivers/gpu/drm/lima/lima_device.h | 11 ++
> drivers/gpu/drm/lima/lima_drv.c | 14 ++-
> drivers/gpu/drm/lima/lima_sched.c | 7 ++
> drivers/gpu/drm/lima/lima_sched.h | 3 +
> 9 files changed, 217 insertions(+), 3 deletions(-)
> create mode 100644 drivers/gpu/drm/lima/lima_devfreq.c
> create mode 100644 drivers/gpu/drm/lima/lima_devfreq.h
>
> --
> 2.24.1
>

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