[v4,0/7] Add support for GPU DDR BW scaling

Message

Akhil P Oommen July 9, 2020, 8 p.m. UTC

This is mostly a rebase of Sharat's patches [1] on the tip of msm-next branch.
Changes compared to v3:
	1. Rebased on top of Jonathan's patch which adds support for changing
	gpu freq through hfi on newer targets. Created patch 1 to make
	this the generic approach of setting gpu freq on newer targets.
	2. As suggested by Rob, left the icc_path intact for pre-a6xx
	GPUs.

As mentioned in [1], these patches have dependency on Georgi's series from
opp/linux-next [2] and also Sibi's patch which adds a helper function to
set and clear ddr bandwidth vote [2].

[1] https://patchwork.freedesktop.org/series/75291/
[2] https://kernel.googlesource.com/pub/scm/linux/kernel/git/vireshk/pm/+log/opp/linux-next/

Akhil P Oommen (1):
  drm: msm: a6xx: set gpu freq through hfi

Sharat Masetty (6):
  dt-bindings: drm/msm/gpu: Document gpu opp table
  drm: msm: a6xx: send opp instead of a frequency
  drm: msm: a6xx: use dev_pm_opp_set_bw to scale DDR
  arm64: dts: qcom: SDM845: Enable GPU DDR bw scaling
  arm64: dts: qcom: sc7180: Add interconnects property for GPU
  arm64: dts: qcom: sc7180: Add opp-peak-kBps to GPU opp

 .../devicetree/bindings/display/msm/gpu.txt        |  28 ++++++
 arch/arm64/boot/dts/qcom/sc7180.dtsi               |   9 ++
 arch/arm64/boot/dts/qcom/sdm845.dtsi               |   9 ++
 drivers/gpu/drm/msm/adreno/a6xx_gmu.c              | 105 +++++++++++----------
 drivers/gpu/drm/msm/adreno/a6xx_gpu.h              |   2 +-
 drivers/gpu/drm/msm/msm_gpu.c                      |   3 +-
 drivers/gpu/drm/msm/msm_gpu.h                      |   3 +-
 7 files changed, 106 insertions(+), 53 deletions(-)