The power domain scaling setup for QCS404 and MSM8909 in cpufreq-com-nvmem does not work correctly at the moment because the genpd core ignores all the performance state votes that are specified in the CPU OPP table. This happens because nothing in the driver makes the genpd core aware that the power domains are actively being consumed by the CPU. Fix this by marking the devices as runtime active. Also mark the devices to be in the "awake path" during system suspend so that performance state votes necessary for the CPU are preserved during system suspend. While all the patches in this series are needed for full functionality, the cpufreq and pmdomain patches can be merged independently. There is no compile-time dependency between those two. Signed-off-by: Stephan Gerhold <stephan.gerhold@xxxxxxxxxxxxxxx> --- Changes in v3: - Drop patches with MSM8909 definitions that were applied already - Add extra patch to fix system suspend properly by using device_set_awake_path() instead of dev_pm_syscore_device() - Set GENPD_FLAG_ACTIVE_WAKEUP for rpmpd so that performance state votes needed by the CPU are preserved during suspend - Link to v2: https://lore.kernel.org/r/20231018-msm8909-cpufreq-v2-0-0962df95f654@xxxxxxxxxxxxxxx Changes in v2: - Reword commit messages based on discussion with Uffe - Use generic power domain name "perf" (Uffe) - Fix pm_runtime error handling (Uffe) - Add allocation cleanup patch as preparation - Fix ordering of qcom,msm8909 compatible (Konrad) - cpufreq-dt-platdev blocklist/dt-bindings patches were applied already - Link to v1: https://lore.kernel.org/r/20230912-msm8909-cpufreq-v1-0-767ce66b544b@xxxxxxxxxxxxxxx --- Stephan Gerhold (3): cpufreq: qcom-nvmem: Enable virtual power domain devices cpufreq: qcom-nvmem: Preserve PM domain votes in system suspend pmdomain: qcom: rpmpd: Set GENPD_FLAG_ACTIVE_WAKEUP drivers/cpufreq/qcom-cpufreq-nvmem.c | 73 ++++++++++++++++++++++++++++++++++-- drivers/pmdomain/qcom/rpmpd.c | 1 + 2 files changed, 71 insertions(+), 3 deletions(-) --- base-commit: b85ea95d086471afb4ad062012a4d73cd328fa86 change-id: 20230906-msm8909-cpufreq-dff238de9ff3 Best regards, -- Stephan Gerhold <stephan.gerhold@xxxxxxxxxxxxxxx> Kernkonzept GmbH at Dresden, Germany, HRB 31129, CEO Dr.-Ing. Michael Hohmuth
