[PATCH v2] arm64: dts: qcom: hamoa/x1: fix idle exit latency

[PATCH v2] arm64: dts: qcom: hamoa/x1: fix idle exit latency

[Daniel J Blueman]

Designs based on the Qualcomm X1 Hamoa reference platform report:
driver: Idle state 1 target residency too low

This is because the declared X1 idle entry plus exit latency of 680us
exceeds the declared minimum 600us residency time:
  entry-latency-us = <180>;
  exit-latency-us = <500>;
  min-residency-us = <600>;

Fix this to be 320us so the sum of the entry and exit latencies matches
the downstream 500us exit latency, as directed by Maulik.

Tested on a Lenovo Yoga Slim 7x with Qualcomm X1E-80-100.

Fixes: 2e65616ef07f ("arm64: dts: qcom: x1e80100: Update C4/C5 residency/exit numbers")
Signed-off-by: Daniel J Blueman <daniel@quora.org>
---
Changelog:
v2:
 - update exit latency

v1: https://lore.kernel.org/all/20260220070204.101672-1-daniel@quora.org/
---
 arch/arm64/boot/dts/qcom/hamoa.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/hamoa.dtsi b/arch/arm64/boot/dts/qcom/hamoa.dtsi
index a17900eacb20..b870f4dc9c42 100644
--- a/arch/arm64/boot/dts/qcom/hamoa.dtsi
+++ b/arch/arm64/boot/dts/qcom/hamoa.dtsi
@@ -269,7 +269,7 @@ cluster_c4: cpu-sleep-0 {
 				idle-state-name = "ret";
 				arm,psci-suspend-param = <0x00000004>;
 				entry-latency-us = <180>;
-				exit-latency-us = <500>;
+				exit-latency-us = <320>;
 				min-residency-us = <600>;
 			};
 		};
-- 
2.51.0

Re: [PATCH v2] arm64: dts: qcom: hamoa/x1: fix idle exit latency

[Konrad Dybcio]

On 2/20/26 1:44 PM, Daniel J Blueman wrote:
> Designs based on the Qualcomm X1 Hamoa reference platform report:
> driver: Idle state 1 target residency too low
> 
> This is because the declared X1 idle entry plus exit latency of 680us
> exceeds the declared minimum 600us residency time:
>   entry-latency-us = <180>;
>   exit-latency-us = <500>;
>   min-residency-us = <600>;
> 
> Fix this to be 320us so the sum of the entry and exit latencies matches
> the downstream 500us exit latency, as directed by Maulik.
> 
> Tested on a Lenovo Yoga Slim 7x with Qualcomm X1E-80-100.
> 
> Fixes: 2e65616ef07f ("arm64: dts: qcom: x1e80100: Update C4/C5 residency/exit numbers")
> Signed-off-by: Daniel J Blueman <daniel@quora.org>
> ---

Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Cc: stable@vger.kernel.org

Konrad

Re: [PATCH v2] arm64: dts: qcom: hamoa/x1: fix idle exit latency

[Bjorn Andersson]

On Fri, 20 Feb 2026 20:44:58 +0800, Daniel J Blueman wrote:
> Designs based on the Qualcomm X1 Hamoa reference platform report:
> driver: Idle state 1 target residency too low
> 
> This is because the declared X1 idle entry plus exit latency of 680us
> exceeds the declared minimum 600us residency time:
>   entry-latency-us = <180>;
>   exit-latency-us = <500>;
>   min-residency-us = <600>;
> 
> [...]

Applied, thanks!

[1/1] arm64: dts: qcom: hamoa/x1: fix idle exit latency
      commit: 3ecea84d2b90bbf934d5ca75514fa902fd71e03f

Best regards,
-- 
Bjorn Andersson <andersson@kernel.org>