From patchwork Fri Feb 23 15:21:19 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johan Hovold X-Patchwork-Id: 775574 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6893D83CC3; Fri, 23 Feb 2024 15:23:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708701789; cv=none; b=mOO5sZKYspBS4ZC2AnFU07tqw9iUmNpLOl20fV6NCmPnn/svHz+iquyfANXYii5Kae1TNO2d1nTM+sjLWxxbVcqdxmnUY7UIwuYpl+RZEgBj0slKFxbedo3S93sFIFYUfF/AyH40xOMtwtcSPbbdCvP5EEBjFmumnUj9WZY2OrU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708701789; c=relaxed/simple; bh=OWj2b5i7fpfFVzm3D5FLX7tedf5qUfedcLWseSq8y7Q=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=gWNseEvwfg3CVg4Em64aHMzUurlDNDliN3nP47UXO+dKaa64gmOlhfegf+TCu7Uih6EzF0ipPjAHnB7B/cizeXr7HEucRsbCWlv9uNdoygKUX+xGYu7DX/C6Y48aGznF1UGje/2ObutmyAywTofHb3WWAq5ltLIZfBF+p0EEf98= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=QMrhpPkq; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="QMrhpPkq" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A3C76C43609; Fri, 23 Feb 2024 15:23:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1708701786; bh=OWj2b5i7fpfFVzm3D5FLX7tedf5qUfedcLWseSq8y7Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QMrhpPkqFG9r00mtXMNDXeW0UgnlRmsYPdHbyg/9/4Z0HEmdvntpW5CGszqUtomla B+EPNYxM2lTEWEirudMCLMviRTm9sQPqwXZrL9zYTIjn2gsYMJCX9q+BxKrGDpc4cx YyKPwjDbXwaqfZoxeHZG9GjXD/UfKyCkK8Uf4oy1NFCfeuuCcUbMHwDRGpbfRw1lzs nRBKklaoM1guPH/h4JCPEggS4Ton0f8E9jMSlkRXpriINSLhY/5xKbLBoPS1HgJqWs 8NumliXEAp6iJN/qM2FrnRQejdl0UECHN7VoaSTjEJaK792mlHVYoUjvEOnBQ0pD3D WfuUvasNTOkBQ== Received: from johan by xi.lan with local (Exim 4.97.1) (envelope-from ) id 1rdXOJ-000000005Fh-1XsO; Fri, 23 Feb 2024 16:23:11 +0100 From: Johan Hovold To: Bjorn Helgaas , Bjorn Andersson Cc: Konrad Dybcio , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84?= =?utf-8?q?ski?= , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Manivannan Sadhasivam , linux-arm-msm@vger.kernel.org, linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold , stable@vger.kernel.org Subject: [PATCH v2 07/12] arm64: dts: qcom: sc8280xp-x13s: limit pcie4 link speed Date: Fri, 23 Feb 2024 16:21:19 +0100 Message-ID: <20240223152124.20042-8-johan+linaro@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240223152124.20042-1-johan+linaro@kernel.org> References: <20240223152124.20042-1-johan+linaro@kernel.org> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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 Reviewed-by: Konrad Dybcio --- arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts | 2 ++ 1 file changed, 2 insertions(+) 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 2c17e137563a..a67756ada990 100644 --- a/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts +++ b/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts @@ -768,6 +768,8 @@ &pcie3a_phy { }; &pcie4 { + max-link-speed = <2>; + perst-gpios = <&tlmm 141 GPIO_ACTIVE_LOW>; wake-gpios = <&tlmm 139 GPIO_ACTIVE_LOW>;