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Would you please give a look and give some feedback? Thanks, Peng >This series introduces DT support in the SCMI clock provider to carry a >per‑clock rounding policy from the device tree into the SCMI protocol. > >Patch 1 adds dt‑bindings constants for rounding modes: >ROUND_DOWN, ROUND_UP, ROUND_AUTO. > >Patch 2 extends the SCMI clock provider to optionally support >"#clock-cells = <2>", where the second cell encodes the rounding mode. >The first consumer that references a given clock latches the per‑clock >policy. Subsequent consumers of the same clock must specify the same >mode; otherwise, the request is rejected to avoid non‑deterministic >behavior. The selected mode is passed through to the SCMI Clock protocol >and mapped to the corresponding CLOCK_SET_* flag. > >Patch 2 includes changes to drivers/clk/clk-scmi.c and drivers/firmware >arm_scmi/clock.c, it is hard to separate the changes without breaking, >so I put the changes in one patch. > >This design adopts a per‑clock policy model, not per‑consumer. The rounding >mode is applied by the provider per clock (index). >All consumers of the same clock must agree on the rounding mode. >Conflicting per‑consumer requests for the same clock are invalid and >are rejected during phandle translation. > >This avoids silent clobbering and preserves deterministic behavior. > >Existing device trees using #clock-cells = <1> continue to work and >default to ROUND_DOWN, exactly as before. > >Signed-off-by: Peng Fan >--- >Peng Fan (2): > dt-bindings: clock: Add SCMI clock rounding mode declarations > clk: scmi: Add support for two #clock-cells to pass rate rounding mode > > drivers/clk/clk-scmi.c | 62 +++++++++++++++++++++++++++++++++++++-- > drivers/firmware/arm_scmi/clock.c | 15 ++++++++-- > include/dt-bindings/clock/scmi.h | 13 ++++++++ > include/linux/scmi_protocol.h | 8 ++++- > 4 files changed, 92 insertions(+), 6 deletions(-) >--- >base-commit: 3f9cd19e764b782706dbaacc69e502099cb014ba >change-id: 20260306-scmi-clk-round-1615258cf0fa > >Best regards, >-- >Peng Fan >