On 10/20/23 08:19, Varadarajan Narayanan wrote:
Stromer Plus PLL found on IPQ53xx doesn't support dynamic frequency scaling. To achieve the same, we need to park the APPS PLL source to GPLL0, re configure the PLL and then switch the source to APSS_PLL_EARLY. To support this, register a clock notifier to get the PRE_RATE and POST_RATE notification. Change the APSS PLL source to GPLL0 when PRE_RATE notification is received, then configure the PLL and then change back the source to APSS_PLL_EARLY. Additionally, not all SKUs of IPQ53xx support scaling. Hence, do the above to the SKUs that support scaling. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> Signed-off-by: Kathiravan T <quic_kathirav@xxxxxxxxxxx> Signed-off-by: Varadarajan Narayanan <quic_varada@xxxxxxxxxxx> ---
This looks good, however I'm not sure if registering the callback only on SoCs that are supposed to rate-change isn't overly-defensive. That said, I'm not particularly against it. Acked-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx> Konrad
