Re: [PATCH v8 2/2] clk: qcom: Add LPASS VA CSR heartbeat pulse clock

[Prasad Kumpatla]

On 9/17/2026 7:27 PM, Sarath Ganapathiraju via B4 Relay wrote:
> From: Sarath Ganapathiraju <sarath.ganapathiraju@xxxxxxxxxxxxxxxx>
>
> The HeartBeat Pulse, also known as RateGen Pulse, synchronizes the
> start of DMAs and Codec Interfaces for the audio usecases and can
> serve as a periodic wakeup source for the DSP.
>
> Add the LPASS VA CSR driver that models the rate generator as a clock
> provider so it is enabled and disabled automatically alongside the
> other clocks during runtime PM resume and suspend.
>
> Attach the DT vote clocks to runtime PM and resume the device before
> programming the rate generator registers, so register accesses happen
> only after the LPASS votes are active.
>
> Signed-off-by: Sarath Ganapathiraju <sarath.ganapathiraju@xxxxxxxxxxxxxxxx>

Validated on Hawi and Maili platforms for WCD-Headset playback.

Reviewed-by: Prasad Kumpatla<prasad.kumpatla@xxxxxxxxxxxxxxxx>
Tested-by: Prasad Kumpatla<prasad.kumpatla@xxxxxxxxxxxxxxxx>

Thanks,
Prasad