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Patch 3 is almost same as https://lore.kernel.org/all/20230814104127.1929-8-peng.fan@oss.nxp.com/ For patch 3, I thought of using QoS constraint in the clk-scu driver, but the clk-scu not support runtime pm, and using simple_qos_governer would introduce complexity for current SCU Power domain, and the SCU power domain not only used by clk-scu, but also used by other devices. So keep current design as NXP downstream which has passed several rounds LTS releases. Patch 1&2 has been in NXP LTS for quite some time and pass through several releases. patch 3 is an update of NXP downstream patch. --- Dong Aisheng (2): PM / Domains: Support enter deepest state for multiple states domains PM / Domains: Choose the deepest state to enter if no devices using it Peng Fan (1): genpd: imx: scu-pd: add multi states support drivers/base/power/domain.c | 22 +++++++++++++++++++++- drivers/genpd/imx/scu-pd.c | 42 ++++++++++++++++++++++++++++++++++++++++-- include/linux/pm_domain.h | 1 + 3 files changed, 62 insertions(+), 3 deletions(-) --- base-commit: 3c13c772fc233a10342c8e1605ff0855dfdf0c89 change-id: 20230913-multiple-state-scu-8ddcb0373d3c Best regards, -- Peng Fan