On 10/5/2022 2:36 PM, Akhil P Oommen wrote:
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.
This series is rebased on top of qcom/linux:for-next branch.
Related discussion: https://patchwork.freedesktop.org/patch/493144/
Changes in v7:
- Update commit message (Bjorn)
- Rebased on top of qcom/linux:for-next branch.
Changes in v6:
- No code changes in this version. Just captured the Acked-by tags
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, 82 insertions(+), 5 deletions(-)
Bjorn,
The latest patchset has been in the mailing list for over a month now.
Could you please share how soon we can pick this? That will give me some
confidence to pull these patches into our chromeos kernel tree ASAP.
-Akhil.
