These two patches fix an issue observed on MT8195-Tomato where if the mediatek-cpufreq-hw driver enabled the hardware (by writing to REG_FREQ_ENABLE) before the SPMI controller driver (spmi-mtk-pmif), behind which lies the big CPU supply, probed the platform would hang shortly after with "rcu: INFO: rcu_preempt detected stalls on CPUs/tasks" being printed in the log. Changes in v2: - Moved supply phandles to CPU nodes in DT - Added fixes tags - Added patch to verify CPU supplies are available before proceeding in the mediatek-cpufreq-hw driver Nícolas F. R. A. Prado (2): arm64: dts: mediatek: cherry: Describe CPU supplies cpufreq: mediatek-hw: Wait for CPU supplies before probing .../boot/dts/mediatek/mt8195-cherry.dtsi | 32 +++++++++++++++++++ drivers/cpufreq/mediatek-cpufreq-hw.c | 19 ++++++++++- 2 files changed, 50 insertions(+), 1 deletion(-) -- 2.43.0
