Message ID | 20240212165043.26961-6-johan+linaro@kernel.org |
---|---|
State | New |
Headers | show
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a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1707756818; bh=mFlQy5tvAhpclwFJjCDguvWh8qyMMwHvkbQ54iBIAmw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QazmYjNSyuroI/MJ8mMKecXHVW5sxOkWkFowEUaf8GAOZB+a9A050hSJnzs2a11eI IJbeObTk2s8AqG8fQC3tBleFxU2HldiJzT/XbYZU+n4mmc/iNiO+lA6u6bRyNLLwxF pPQFzowW2rK+LM/PWFyNHWzeBkQbjU5jumldM+TxJXnSo1/vMqJDIsPsFOnquPneLE CFiuelrBWXjfaTdPXAaKo/HOenF46p0KRRBe7wPmd4jlYKhtvJ3OKfaMIdg9NZPwUC unUw2Gd+4A4yutjXN+LT13lpw+tk+i8zIbgbpAZwlly0EqTb3izU7gbV7NkRMUcR0y b9TR7sW40xLYQ== Received: from johan by xi.lan with local (Exim 4.97.1) (envelope-from <johan+linaro@kernel.org>) id 1rZZZ2-000000007N7-2kAz; Mon, 12 Feb 2024 17:53:52 +0100 From: Johan Hovold <johan+linaro@kernel.org> To: Bjorn Andersson <andersson@kernel.org>, Bjorn Helgaas <bhelgaas@google.com> Cc: Konrad Dybcio <konrad.dybcio@linaro.org>, Lorenzo Pieralisi <lpieralisi@kernel.org>, =?utf-8?q?Krzysztof_Wilczy=C5=84?= =?utf-8?q?ski?= <kw@linux.com>, Rob Herring <robh@kernel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>, Conor Dooley <conor+dt@kernel.org>, Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>, linux-arm-msm@vger.kernel.org, linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold <johan+linaro@kernel.org>, stable@vger.kernel.org Subject: [PATCH 05/10] arm64: dts: qcom: sc8280xp-x13s: limit pcie4 link speed Date: Mon, 12 Feb 2024 17:50:38 +0100 Message-ID: <20240212165043.26961-6-johan+linaro@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240212165043.26961-1-johan+linaro@kernel.org> References: <20240212165043.26961-1-johan+linaro@kernel.org> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: <linux-pci.vger.kernel.org> List-Subscribe: <mailto:linux-pci+subscribe@vger.kernel.org> List-Unsubscribe: <mailto:linux-pci+unsubscribe@vger.kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit |
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arm64: dts: qcom: sc8280xp: enable GICv3 ITS for PCIe
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diff --git a/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts b/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts index 511d53d9c5a1..ff4b896b1bbf 100644 --- a/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts +++ b/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts @@ -863,6 +863,8 @@ &pcie3a_phy { }; &pcie4 { + max-link-speed = <2>; + perst-gpios = <&tlmm 141 GPIO_ACTIVE_LOW>; wake-gpios = <&tlmm 139 GPIO_ACTIVE_LOW>;
Limit the WiFi PCIe link speed to Gen2 speed (500 GB/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 may potentially also help with 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> --- arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts | 2 ++ 1 file changed, 2 insertions(+)