6.7-stable review patch. If anyone has any objections, please let me know.
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From: Johan Hovold johan+linaro@kernel.org
commit 7a1c6a8bf47b0b290c79b9cc3ba6ee68be5522e8 upstream.
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@vger.kernel.org # 6.2 Signed-off-by: Johan Hovold johan+linaro@kernel.org Reviewed-by: Konrad Dybcio konrad.dybcio@linaro.org Reviewed-by: Manivannan Sadhasivam manivannan.sadhasivam@linaro.org Link: https://lore.kernel.org/r/20240223152124.20042-8-johan+linaro@kernel.org Signed-off-by: Bjorn Andersson andersson@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts | 2 ++ 1 file changed, 2 insertions(+)
--- a/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts +++ b/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts @@ -721,6 +721,8 @@ };
&pcie4 { + max-link-speed = <2>; + perst-gpios = <&tlmm 141 GPIO_ACTIVE_LOW>; wake-gpios = <&tlmm 139 GPIO_ACTIVE_LOW>;