| Message ID | 1661714479-28981-1-git-send-email-quic_akhilpo@quicinc.com |
|---|---|
| Headers | show |
| Series | clk/qcom: Support gdsc collapse polling using 'reset' interface | expand |
+Philipp Quoting Akhil P Oommen (2022-08-28 12:21:13) > > Some clients like adreno gpu driver would like to ensure that its gdsc > is collapsed at hardware during a gpu reset sequence. This is because it > has a votable gdsc which could be ON due to a vote from another subsystem > like tz, hyp etc or due to an internal hardware signal. To allow > this, gpucc driver can expose an interface to the client driver using > reset framework. Using this the client driver can trigger a polling within > the gdsc driver. Please include the reset maintainer on reset related patches. -Stephen > > This series is rebased on top of linus's master branch. > > Related discussion: https://patchwork.freedesktop.org/patch/493144/ > > Changes in v5: > - Nit: Remove a duplicate blank line (Krzysztof) > > Changes in v4: > - Update gpu dt-binding schema > - Typo fix in commit text > > Changes in v3: > - Use pointer to const for "struct qcom_reset_ops" in qcom_reset_map (Krzysztof) > > Changes in v2: > - Return error when a particular custom reset op is not implemented. (Dmitry) > > Akhil P Oommen (6): > dt-bindings: clk: qcom: Support gpu cx gdsc reset > clk: qcom: Allow custom reset ops > clk: qcom: gdsc: Add a reset op to poll gdsc collapse > clk: qcom: gpucc-sc7280: Add cx collapse reset support > dt-bindings: drm/msm/gpu: Add optional resets > arm64: dts: qcom: sc7280: Add Reset support for gpu > > .../devicetree/bindings/display/msm/gpu.yaml | 6 +++++ > arch/arm64/boot/dts/qcom/sc7280.dtsi | 3 +++ > drivers/clk/qcom/gdsc.c | 23 ++++++++++++++---- > drivers/clk/qcom/gdsc.h | 7 ++++++ > drivers/clk/qcom/gpucc-sc7280.c | 10 ++++++++ > drivers/clk/qcom/reset.c | 27 ++++++++++++++++++++++ > drivers/clk/qcom/reset.h | 8 +++++++ > include/dt-bindings/clock/qcom,gpucc-sc7280.h | 3 +++ > 8 files changed, 83 insertions(+), 4 deletions(-)