Re: [PATCH 2/3] soc: qcom: stats: Add stats compatible and config for Shikra

[Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>]

On 7/3/26 1:13 PM, Sneh Mankad wrote:
> SoC sleep stats are present in RPM message RAM and subsystem sleep
> stats are present in SMEM for Shikra.
> 
> For earlier targets using RPM processor like msm8974, rpm_master_stat.c
> was used for subsystem sleep stats since those stats were populated in
> RPM MSGRAM.
> 
> Here is a brief summary of previous targets and their stats
> configuration, along with the drivers used to display them.
> 
> +---------------|----------------------------|---------------------------+
> | SoC           | subsystem sleep stats      | SoC sleep stats           |
> |---------------|----------------------------|---------------------------|
> | msm8974,      | RPM processor MSGRAM       | RPM processor MSGRAM      |
> | msm8226       | (rpm_master_stat.c)        | (qcom_stats.c)            |
> |---------------|----------------------------|---------------------------|
> | sm6350,       | SMEM (DDR)                 | AOP processor MSGRAM      |
> | sdm845, etc.  | (qcom_stats.c)             | (qcom_stats.c)            |
> |---------------|----------------------------|---------------------------|
> | Shikra        | SMEM (DDR)                 | RPM processor MSGRAM      |
> |               | (qcom_stats.c)             | (qcom_stats.c)            |
> +---------------|----------------------------|---------------------------+
> 
> qcom_stats.c supports both the configurations for shikra, reading
> subsystem sleep stats from SMEM and reading SoC sleep stats from RPM
> MSGRAM.
> 
> A generic "qcom,rpm-stats" compatible only reads SoC sleep stats like vmin
> and vlow. Add shikra rpm compatible and config to read subsystem sleep
> stats too along with SoC sleep stats.
> 
> Below is an example showing sleep stats for "apss" subsystem with this
> change:
> 
> cat /sys/kernel/debug/qcom_stats/apss
> Count: 2192
> Last Entered At: 5498618336
> Last Exited At: 5498708046
> Accumulated Duration: 2046572620.
> 
> Signed-off-by: Sneh Mankad <sneh.mankad@oss.qualcomm.com>
> ---

Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
 
Konrad