[PATCH v3 4/6] interconnect: qcom: Only wait for completion in AMC/WAKE by default

Mike Tipton
2020-08-01T03:32:49Z

Change the default TCS wait behavior to only wait for completion in AMC
and WAKE. Waiting isn't necessary in the SLEEP TCS, since votes are only
being removed in this case. Resources can be safely disabled
asynchronously in parallel with the rest of the power collapse sequence.
This reduces the sleep entry latency.

Signed-off-by: Mike Tipton <mdtipton@codeaurora.org>
---
drivers/interconnect/qcom/bcm-voter.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/interconnect/qcom/bcm-voter.c b/drivers/interconnect/qcom/bcm-voter.c
index 4bba3b42b648..d95725b9208c 100644
--- a/drivers/interconnect/qcom/bcm-voter.c
+++ b/drivers/interconnect/qcom/bcm-voter.c
@@ -341,7 +341,7 @@ static int qcom_icc_bcm_voter_probe(struct platform_device *pdev)
voter->np = np;

if (of_property_read_u32(np, "qcom,tcs-wait", &voter->tcs_wait))
- voter->tcs_wait = QCOM_ICC_TAG_ALWAYS;
+ voter->tcs_wait = QCOM_ICC_TAG_ACTIVE_ONLY;

mutex_init(&voter->lock);
INIT_LIST_HEAD(&voter->commit_list);