Hi Konrad, On 31.07.23 13:52, Konrad Dybcio wrote:
Certain platforms require that some buses (or individual nodes) make some additional changes to the clock rate formula, throwing in some magic, Qualcomm-defined coefficients, to account for "inefficiencies".
Maybe some links to the downstream code would help to better check and understand this. Adding also Odelu in case he has any comments on the patches. Thanks, Georgi
Add the framework for it and utilize it on a couple SoCs. Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx> --- Changes in v2: - Use the (arguably less favourable but necessary for precission) 100/x instead of x/100 for ib coefficient, update values in consequent patches to reflect that - Rename "_percent" to "_coeff" because of /\ - Add the necessary code to support per-node clocks - Add the necessary code to support per-node coefficients - Hook up the CPUSS<->GNoC clock on QCM2290 - Update EBI node on QCM2290 - Link to v1: https://lore.kernel.org/r/20230726-topic-icc_coeff-v1-0-31616960818c@xxxxxxxxxx --- Konrad Dybcio (10): interconnect: qcom: icc-rpm: Add AB/IB calculations coefficients interconnect: qcom: icc-rpm: Separate out clock rate calulcations interconnect: qcom: icc-rpm: Let nodes drive their own bus clock interconnect: qcom: icc-rpm: Check for node-specific rate coefficients interconnect: qcom: qcm2290: Hook up MAS_APPS_PROC's bus clock interconnect: qcom: qcm2290: Set AB coefficients interconnect: qcom: qcm2290: Update EBI channel configuration interconnect: qcom: sdm660: Set AB/IB coefficients interconnect: qcom: msm8996: Set AB/IB coefficients clk: qcom: smd-rpm: Move CPUSS_GNoC clock to interconnect drivers/clk/qcom/clk-smd-rpm.c | 16 ++++-- drivers/interconnect/qcom/icc-rpm-clocks.c | 6 ++ drivers/interconnect/qcom/icc-rpm.c | 92 ++++++++++++++++++++++++------ drivers/interconnect/qcom/icc-rpm.h | 15 +++++ drivers/interconnect/qcom/msm8996.c | 8 ++- drivers/interconnect/qcom/qcm2290.c | 9 ++- drivers/interconnect/qcom/sdm660.c | 4 ++ 7 files changed, 124 insertions(+), 26 deletions(-) --- base-commit: ec89391563792edd11d138a853901bce76d11f44 change-id: 20230726-topic-icc_coeff-b053d5409b9f Best regards,
