This series adds support for LPASS low-power resource (LPR) voting
through PRM and introduces LPASS LPI TLMM pinctrl support for newer
platforms such as Hawi.
On such platforms, LPASS requires LPR resource voting via PRM to keep
the subsystem active. This is handled by adding a new clock ID and
support for PARAM_ID_RSC_CPU_LPR in q6prm.
Additionally, a new LPASS LPI TLMM block is introduced, requiring a
dedicated DT binding and pinctrl driver.
Dependencies and merge strategy
===============================
This series introduces LPASS_HW_LPR_VOTE in
include/dt-bindings/sound/qcom,q6dsp-lpass-ports.h.
The LPASS_HW_LPR_VOTE definition is required by:
- the ASoC q6prm LPASS LPR voting support, and
- the Hawi LPASS LPI DT binding.
The LPASS_HW_LPR_VOTE definition in qcom,q6dsp-lpass-ports.h is
used by both the ASoC LPASS LPR voting support and the Hawi
LPASS LPI DT binding. As such, the header update adding
LPASS_HW_LPR_VOTE should be merged ahead of the dependent
ASoC and pinctrl changes.
The intended merge strategy is:
1. Merge the dt-bindings patch adding LPASS_HW_LPR_VOTE to
qcom,q6dsp-lpass-ports.h.
2. After the header update is merged, the remaining ASoC and
pinctrl patches may be merged through their respective
subsystem trees.
Changes in v6:
- As per srini comments: Split the Q6DSP_MAX_CLK_ID update
into a separate patch.
- Update on cover letter merge strategy.
- Link to v5: https://lore.kernel.org/linux-arm-msm/20260722120217.3609506-1-prasad.kumpatla@oss.qualcomm.com/
Changes in v5:
- Keep LPASS_HW_LPR_VOTE addition separate from removal of the unused
Q6AFE_MAX_CLK_ID define and move the cleanup to a follow-up patch.
- Clarify dependency on LPASS_HW_LPR_VOTE and document the intended
merge strategy in the cover letter.
- Link to v4: https://lore.kernel.org/linux-arm-msm/20260720130511.493295-1-prasad.kumpatla@oss.qualcomm.com/
changes in v4:
- Addressed Krzysztof comments, Drop Q6AFE_MAX_CLK_ID from the bindings
since it is not used in-tree.
- Link to v3: https://lore.kernel.org/linux-arm-msm/20260715133243.3170821-1-prasad.kumpatla@oss.qualcomm.com/
Changes in v3:
- Drop the mutex cleanup patch from this series. Since this change
is not required for Hawi enablement, keep the current series
focused on LPASS LPR voting and LPASS LPI TLMM support, and
address the cleanup in a dedicated follow-up series.
- As Srini suggested changed LPR_CPU_SS_SLEEP_DISABLED to LPR_CPU_SS_SLEEP_DISABLE in patch#2.
- Link to v2: https://lore.kernel.org/all/20260713184549.929569-1-prasad.kumpatla@oss.qualcomm.com/
Changes in v2:
- Add mutex cleanup devm-managed in LPASS LPI Pinctrl.
- Addressed Bart Comments related to newline and readability.
- Link to v1: https://lore.kernel.org/linux-arm-msm/20260708114924.1069239-1-prasad.kumpatla@oss.qualcomm.com/
Prasad Kumpatla (5):
ASoC: dt-bindings: qcom: add LPASS LPR vote clock ID
ASoC: qcom: qdsp6: Increase Q6DSP_MAX_CLK_ID for LPASS LPR vote clock
ASoC: qcom: q6prm: add support for LPASS LPR resource voting
dt-bindings: pinctrl: qcom,hawi-lpass-lpi-pinctrl: Add Hawi LPI
pinctrl
pinctrl: qcom: hawi-lpass-lpi: add Hawi LPASS LPI TLMM
.../pinctrl/qcom,hawi-lpass-lpi-pinctrl.yaml | 109 ++++++++
drivers/pinctrl/qcom/Kconfig | 10 +
drivers/pinctrl/qcom/Makefile | 1 +
drivers/pinctrl/qcom/pinctrl-hawi-lpass-lpi.c | 244 ++++++++++++++++++
drivers/pinctrl/qcom/pinctrl-lpass-lpi.h | 17 ++
.../sound/qcom,q6dsp-lpass-ports.h | 1 +
sound/soc/qcom/qdsp6/q6dsp-lpass-clocks.c | 2 +-
sound/soc/qcom/qdsp6/q6prm-clocks.c | 2 +
sound/soc/qcom/qdsp6/q6prm.c | 16 +-
sound/soc/qcom/qdsp6/q6prm.h | 1 +
10 files changed, 399 insertions(+), 4 deletions(-)
create mode 100644 Documentation/devicetree/bindings/pinctrl/qcom,hawi-lpass-lpi-pinctrl.yaml
create mode 100644 drivers/pinctrl/qcom/pinctrl-hawi-lpass-lpi.c
base-commit: 9eebf259d5352b87080d67758f483583d9e763d7
--
2.34.1