Re: [PATCH v2 3/3] pmdommain: add support system-wide resume latency constraints
From: Kendall Willis
Date: Wed Feb 11 2026 - 16:30:14 EST
Hi Kevin,
On 2/5/26 18:29, Kevin Hilman (TI) wrote:
In addition to checking for CPU latency constraints when checking if
OK to power down a domain, also check for QoS latency constraints in
all devices of a domain and use that in determining the final latency
constraint to use for the domain.
Since cpu_system_power_down_ok() is used for system-wide suspend, the
per-device constratints are only relevant if the LATENCY_SYS QoS flag
is set.
Signed-off-by: Kevin Hilman (TI) <khilman@xxxxxxxxxxxx>
---
Were you planning to also check the CPU devices QoS latency constraints in the cpu_system_power_down_ok function? At present, this patch does not add that functionality so if the PM_QOS_FLAG_LATENCY_SYS is present for a CPU device, the QoS latency is not taken into account.
Best,
Kendall Willis <k-willis@xxxxxx>