From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
To: Daniel J Blueman <daniel@quora.org>,
Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konradybcio@kernel.org>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Maulik Shah <maulik.shah@oss.qualcomm.com>
Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, stable@kernel.org
Subject: Re: [PATCH v2] arm64: dts: qcom: hamoa/x1: fix idle exit latency
Date: Fri, 20 Feb 2026 14:02:03 +0100 [thread overview]
Message-ID: <7dddf37b-c8f9-4cc2-bd3f-1bff5cc398d1@oss.qualcomm.com> (raw)
In-Reply-To: <20260220124626.8611-1-daniel@quora.org>
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
next prev parent reply other threads:[~2026-02-20 13:02 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-20 12:44 Daniel J Blueman
2026-02-20 13:02 ` Konrad Dybcio [this message]
2026-02-23 19:56 ` Bjorn Andersson
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