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Message-ID: <718fda77-fa28-497a-bc2a-be93c3fa0b68@linaro.org>
Date: Fri, 23 Feb 2024 22:25:49 +0100
From: Konrad Dybcio <konrad.dybcio@...aro.org>
To: Johan Hovold <johan+linaro@...nel.org>,
Bjorn Helgaas <bhelgaas@...gle.com>, Bjorn Andersson <andersson@...nel.org>
Cc: Lorenzo Pieralisi <lpieralisi@...nel.org>,
Krzysztof WilczyĆski <kw@...ux.com>,
Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
linux-arm-msm@...r.kernel.org, linux-pci@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
stable@...r.kernel.org
Subject: Re: [PATCH v2 07/12] arm64: dts: qcom: sc8280xp-x13s: limit pcie4
link speed
On 23.02.2024 16:21, Johan Hovold wrote:
> Limit the WiFi PCIe link speed to Gen2 speed (500 MB/s), which is the
> speed that the boot firmware has brought up the link at (and that
> Windows uses).
>
> This is specifically needed to avoid a large amount of link errors when
> restarting the link during boot (but which are currently not reported).
>
> This also appears to fix intermittent failures to download the ath11k
> firmware during boot which can be seen when there is a longer delay
> between restarting the link and loading the WiFi driver (e.g. when using
> full disk encryption).
>
> Fixes: 123b30a75623 ("arm64: dts: qcom: sc8280xp-x13s: enable WiFi controller")
> Cc: stable@...r.kernel.org # 6.2
> Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
> ---
Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>
Konrad
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