[PATCH v5 0/2] Add LPASS VA CSR HeartBeat pulse clock support

Sarath Ganapathiraju via B4 Relay <[email protected]> Thu, 06 Aug 2026 20:21:35 +0530
Newsgroups org.kernel.vger.linux-clk,org.kernel.feeds.b4-sent,org.kernel.vger.linux-arm-msm,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-kernel
Message-ID <[email protected]>
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/[email protected]

Signed-off-by: Sarath Ganapathiraju <[email protected]>
---
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,
--  
Sarath Ganapathiraju <[email protected]>