[PATCH v6 00/12] Unregister critical branch clocks + some RPM

[Konrad Dybcio]

On Qualcomm SoCs, certain branch clocks either need to be always-on, or
should be if you're interested in touching some part of the hardware.

Using CLK_IS_CRITICAL for this purpose sounds like a genius idea,
however that messes with the runtime pm handling - if a clock is
marked as such, the clock controller device will never enter the
"suspended" state, leaving the associated resources online, which in
turn breaks SoC-wide suspend.

This series aims to solve that on a couple SoCs that I could test the
changes on and it sprinkles some runtime pm enablement atop these drivers.

Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
---
Changes in v6:
- Rebase (next-20240112)
- Reorder qcom_branch_set_clk_en calls by register in "*: Unregister
  critical clocks" (Johan)
- Pick up tags
- Link to v5: https://lore.kernel.org/r/20230717-topic-branch_aon_cleanup-v5-0-99942e6bf1ba@xxxxxxxxxx

Changes in v5:
- Change the "Keep the critical clocks always-on" comment to "Keep
  some clocks always-on"
- Add the same comment to commits unregistering clocks on 6115/6375/2290
- Link to v4: https://lore.kernel.org/r/20230717-topic-branch_aon_cleanup-v4-0-32c293ded915@xxxxxxxxxx

Changes in v4:
- Add and unify the "/* Keep the critical clocks always-on */" comment
- Rebase (next-20231222), also include 8650, X1E and 8280camcc drivers
- Drop enabling runtime PM on GCC
- Improve the commit message of "clk: qcom: gpucc-sm6115: Add runtime PM"
- Link to v3: https://lore.kernel.org/r/20230717-topic-branch_aon_cleanup-v3-0-3e31bce9c626@xxxxxxxxxx

Changes in v3:
- Rebase (next-20231219)
- Fix up a copypaste mistake in "gcc-sm6375: Unregister critical clocks" (bod)
- Pick up tags
- Link to v2: https://lore.kernel.org/r/20230717-topic-branch_aon_cleanup-v2-0-2a583460ef26@xxxxxxxxxx

Changes in v2:
- Rebase
- Pick up tags
- Fix up missing pm_runtime_put in SM6375 GCC (Johan)
- Clarify the commit message of "Add runtime PM" commits (Johan)
- "GPU_CCC" -> "GPU_CC" (oops)
- Rebase atop next-20231129
  - Also fix up camcc-sm8550 & gcc-sm4450
  - Unify and clean up the comment style
  - Fix missing comments in gcc-sc7180..
  - Drop Johan's ack from "clk: qcom: Use qcom_branch_set_clk_en()"
- Improve 6115 dt patch commit message (Bjorn)
- Link to v1: https://lore.kernel.org/r/20230717-topic-branch_aon_cleanup-v1-0-27784d27a4f4@xxxxxxxxxx

---
Konrad Dybcio (12):
      clk: qcom: branch: Add a helper for setting the enable bit
      clk: qcom: Use qcom_branch_set_clk_en()
      clk: qcom: gcc-sm6375: Unregister critical clocks
      clk: qcom: gpucc-sm6375: Unregister critical clocks
      clk: qcom: gpucc-sm6115: Unregister critical clocks
      clk: qcom: gpucc-sm6115: Add runtime PM
      clk: qcom: gcc-sm6115: Unregister critical clocks
      clk: qcom: gcc-qcm2290: Unregister critical clocks
      arm64: dts: qcom: sm6375: Add VDD_CX to GCC
      arm64: dts: qcom: qcm2290: Add VDD_CX to GCC
      arm64: dts: qcom: sm6115: Add VDD_CX to GCC
      arm64: dts: qcom: sm6115: Add VDD_CX to GPU_CC

 arch/arm64/boot/dts/qcom/qcm2290.dtsi |   1 +
 arch/arm64/boot/dts/qcom/sm6115.dtsi  |   3 +
 arch/arm64/boot/dts/qcom/sm6375.dtsi  |   1 +
 drivers/clk/qcom/camcc-sc8280xp.c     |   6 +-
 drivers/clk/qcom/camcc-sm8550.c       |  10 +--
 drivers/clk/qcom/clk-branch.h         |   7 ++
 drivers/clk/qcom/dispcc-qcm2290.c     |   4 +-
 drivers/clk/qcom/dispcc-sc7280.c      |   7 +-
 drivers/clk/qcom/dispcc-sc8280xp.c    |   4 +-
 drivers/clk/qcom/dispcc-sm6115.c      |   4 +-
 drivers/clk/qcom/dispcc-sm8250.c      |   4 +-
 drivers/clk/qcom/dispcc-sm8450.c      |   7 +-
 drivers/clk/qcom/dispcc-sm8550.c      |   7 +-
 drivers/clk/qcom/dispcc-sm8650.c      |   4 +-
 drivers/clk/qcom/gcc-qcm2290.c        | 106 +++--------------------------
 drivers/clk/qcom/gcc-sa8775p.c        |  25 +++----
 drivers/clk/qcom/gcc-sc7180.c         |  22 +++---
 drivers/clk/qcom/gcc-sc7280.c         |  20 +++---
 drivers/clk/qcom/gcc-sc8180x.c        |  28 +++-----
 drivers/clk/qcom/gcc-sc8280xp.c       |  25 +++----
 drivers/clk/qcom/gcc-sdx55.c          |  12 ++--
 drivers/clk/qcom/gcc-sdx65.c          |  13 ++--
 drivers/clk/qcom/gcc-sdx75.c          |  10 +--
 drivers/clk/qcom/gcc-sm4450.c         |  28 +++-----
 drivers/clk/qcom/gcc-sm6115.c         | 124 +++-------------------------------
 drivers/clk/qcom/gcc-sm6375.c         | 105 +++-------------------------
 drivers/clk/qcom/gcc-sm7150.c         |  23 +++----
 drivers/clk/qcom/gcc-sm8250.c         |  19 ++----
 drivers/clk/qcom/gcc-sm8350.c         |  20 +++---
 drivers/clk/qcom/gcc-sm8450.c         |  21 +++---
 drivers/clk/qcom/gcc-sm8550.c         |  21 +++---
 drivers/clk/qcom/gcc-sm8650.c         |  16 ++---
 drivers/clk/qcom/gcc-x1e80100.c       |  16 ++---
 drivers/clk/qcom/gpucc-sc7280.c       |   9 +--
 drivers/clk/qcom/gpucc-sc8280xp.c     |   9 +--
 drivers/clk/qcom/gpucc-sm6115.c       |  53 ++++++---------
 drivers/clk/qcom/gpucc-sm6375.c       |  34 ++--------
 drivers/clk/qcom/gpucc-sm8550.c       |  10 +--
 drivers/clk/qcom/lpasscorecc-sc7180.c |   7 +-
 drivers/clk/qcom/videocc-sm8250.c     |   6 +-
 drivers/clk/qcom/videocc-sm8350.c     |  10 +--
 drivers/clk/qcom/videocc-sm8450.c     |  13 ++--
 drivers/clk/qcom/videocc-sm8550.c     |  13 ++--
 43 files changed, 234 insertions(+), 653 deletions(-)
---
base-commit: 8d04a7e2ee3fd6aabb8096b00c64db0d735bc874
change-id: 20230717-topic-branch_aon_cleanup-6976c13fe71c

Best regards,
-- 
Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>