From patchwork Mon Feb 12 16:50:38 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johan Hovold X-Patchwork-Id: 13553664 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 6DFF33D565; Mon, 12 Feb 2024 16:53:39 +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=1707756819; cv=none; b=T3bscHW8rqqFPhxNmbfhbad/8/0avyLV4Dumv2AZ16xD4O+oZkRbeND1N3hNZtxKTUfzPjchfHtIhQpIbBi8ZQs/WYkdrurD6Jhu5/EMFofJCp80QxbvwvFjAIzkfnoF2p3DMU2Ffaiy3T/TQiFyw98a43HnUHcmV3jC09pXsGk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707756819; c=relaxed/simple; bh=mFlQy5tvAhpclwFJjCDguvWh8qyMMwHvkbQ54iBIAmw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=L2KuGIf8VnS+3eu1CLT1yd6fP4Z/4wB/y8HSbEhLvZKz0vkXKyjVOjeG8GX0BR8Sw+XpmmGqgGSw6TXkO8uLqRChIqUP7d1aJT5ms5GHKRxTMCYMGY9sda5A4iAfBbCUc2XpIC/61802pIq3Fc6/hNSwtRvzkNahgtObwchmKas= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=QazmYjNS; 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="QazmYjNS" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B1915C43394; Mon, 12 Feb 2024 16:53:38 +0000 (UTC) DKIM-Signature: v=1; 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 ) id 1rZZZ2-000000007N7-2kAz; Mon, 12 Feb 2024 17:53:52 +0100 From: Johan Hovold To: Bjorn Andersson , Bjorn Helgaas 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 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: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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 --- 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 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>;