Re: [PATCH 2/7] soc: qcom: geni-se: Populate clk_perf_tbl with SE source clock frequencies from perf OPP table

[Mukesh Savaliya <mukesh.savaliya@oss.qualcomm.com>]

On 8/5/2026 1:27 AM, Praveen Talari wrote:
> Currently, on the SA8255P platform, protocol drivers attached via
> geni_se_domain_attach() treat each OPP on the perf domain as directly
> corresponding to a protocol value such as a baudrate or requested
> frequency, and simply request that OPP via
> geni_se_set_perf_level()/geni_se_set_perf_opp(). This does not allow
> computing a source clock and divider combination for a protocol
> requested frequency, unlike the Linux clock managed path which derives
> this from se->clk_perf_tbl via geni_se_clk_freq_match(), and then
> applies the matched source clock frequency with dev_pm_opp_set_rate().
> 
> Change this by treating the OPP table exposed on the perf domain
> device as representing the actual SE HW supported source clock
> frequencies, the same role clk_perf_tbl plays for the Linux clock
> managed path. Populate se->clk_perf_tbl and se->num_clk_levels by
> iterating over this OPP table in geni_se_domain_attach(), so that
> protocol drivers on the firmware managed (SA8255P) path can also use
> geni_se_clk_freq_match() to pick the closest supported source clock
> frequency and calculate the required divider, and apply it with
> dev_pm_opp_set_rate() the same way as it is done for the Linux clock
> managed path, instead of relying on a direct frequency/baudrate-to-
> perf-level mapping.
> 
> Signed-off-by: Praveen Talari <praveen.talari@oss.qualcomm.com>
> ---
Acked-by: Mukesh Savaliya <mukesh.savaliya@oss.qualcomm.com>