[PATCH v5 0/2] Add LPASS VA CSR HeartBeat pulse clock support
From: Sarath Ganapathiraju via B4 Relay
Date: Thu Aug 06 2026 - 10:56:10 EST
The LPASS VA CSR block contains rate generator hardware that produces
a HeartBeat Pulse (also known as RateGen Pulse). This pulse
synchronizes the start of the DMAs and Codec Interfaces for the audio
usecases and can serve as a periodic wakeup source for the DSP.
This series adds the DT binding and driver support to model this
rate generator as a clock provider.
Patch 1 adds the YAML binding for the new qcom,hawi-lpass-va-csr
clock provider node under Documentation/devicetree/bindings/clock/.
Patch 2 adds the lpass-va-csr driver under drivers/clk/qcom that
registers the lpass_heartbeat_pulse clock and enables/disables the
rate generator via regmap when the clock consumer requests it.
Changes in v5:
- Add explicit ARM64 Kconfig gating and Qualcomm default-module policy
for QCOM_CLK_LPASS_HEARTBEAT_PULSE to align with nearby qcom clock
entries (sashiko-bot).
- Link to v4: https://patch.msgid.link/20260805-master-20260805-sync-v4-0-dfbcbf427c2c@xxxxxxxxxxxxxxxx
Signed-off-by: Sarath Ganapathiraju <sarath.ganapathiraju@xxxxxxxxxxxxxxxx>
---
Sarath Ganapathiraju (2):
dt-bindings: clock: qcom: Add LPASS VA CSR HeartBeat pulse clock
clk: qcom: Add LPASS VA CSR heartbeat pulse clock
.../bindings/clock/qcom,hawi-lpass-va-csr.yaml | 51 +++++++
drivers/clk/qcom/Kconfig | 14 ++
drivers/clk/qcom/Makefile | 1 +
drivers/clk/qcom/lpass-va-csr.c | 148 +++++++++++++++++++++
4 files changed, 214 insertions(+)
---
base-commit: 1701fda2f58e345c050f4309971bdc07cd6146ba
change-id: 20260805-master-20260805-sync-d892f9d7a2e0
Best regards,
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Sarath Ganapathiraju <sarath.ganapathiraju@xxxxxxxxxxxxxxxx>