From mboxrd@z Thu Jan 1 00:00:00 1970 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 B25EE2CCB4; Fri, 16 Feb 2024 12:04:01 +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=1708085041; cv=none; b=gjbLX4VnieR6SoCMYCLkxLnd/56eB9Dutc3lsXE6yl5VlrtafCRAhV9bspOyonFrR+NySuV5aHQqEt2t9Expr6/6Gcx6LQYARHVLwSY1AesxiMNNq6GGtJZbQF4d107pJ+dr0075QQaE+Q/TFqLNF/aupVmxvLoFeR5CqFqNyQ0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708085041; c=relaxed/simple; bh=PTQ7drOCFYR2XmjE20PfxIFEdOUFSjak+DYt3wb3o9U=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=A4+Ihq5bS9Gm8U5fD/F5HRAn+7ibUzpT3uH+44J58FlbPdPfNstP8WchQ2OY5BzO/LJ5fi91Ib/N7RxF4yUNQwV01l4Z5dbLGVQwgOU5aPDuskhXfk1sD2EThHMlggLJ8z2lbKcTZ08hzFZcp8C1baJQAC6R2fSspvXww8CsSJ4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ENf1xW2O; 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="ENf1xW2O" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 330F1C433F1; Fri, 16 Feb 2024 12:04:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1708085041; bh=PTQ7drOCFYR2XmjE20PfxIFEdOUFSjak+DYt3wb3o9U=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=ENf1xW2OgcNbljzsuHsPEhYwTKzsVzgBg4eRNA3QwsyDwto/DoeOhthzC5hFd3YcY bSDRt/wq2OUVgMwczv9bee0uGYiSKvimudWKE1/FbjNMSaAP2z/tZ/Iu2dxA19+0Kq peHCuMpufuc9pKv//UsD70WTtzO4rty9jb31/QINryu4P6UJCZp+YjITx3aProa3GH sXn/uadLXP3c1o3klh9kZovcG5324aDuvmT84F6M4BHxU8wnTt4RAJmIACH9dJHm7I S7L7tSQ/WyWM8Sa0QE7wMbG2aPItW1h+en9oiRVrLzRG2PXjBtAQsH1e+ui/LI4Xci JBMybJlrD+nPg== Received: from johan by xi.lan with local (Exim 4.97.1) (envelope-from ) id 1rawx7-000000007JX-2OIU; Fri, 16 Feb 2024 13:04:25 +0100 Date: Fri, 16 Feb 2024 13:04:25 +0100 From: Johan Hovold To: Konrad Dybcio Cc: Johan Hovold , Bjorn Andersson , Bjorn Helgaas , Lorenzo Pieralisi , Krzysztof =?utf-8?Q?Wilczy=C5=84ski?= , 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 Subject: Re: [PATCH 04/10] arm64: dts: qcom: sc8280xp-crd: limit pcie4 link speed Message-ID: References: <20240212165043.26961-1-johan+linaro@kernel.org> <20240212165043.26961-5-johan+linaro@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Fri, Feb 16, 2024 at 08:12:46AM +0100, Johan Hovold wrote: > On Thu, Feb 15, 2024 at 09:47:01PM +0100, Konrad Dybcio wrote: > > On 12.02.2024 17:50, Johan Hovold wrote: > > > Limit the WiFi PCIe link speed to Gen2 speed (500 GB/s), which is the > > > > MB/s > > Indeed, thanks for spotting that. > > > > speed that Windows uses. > > Hm.. I'dve assumed it ships with a WLAN card that supports moving > > more bandwidth.. Is it always at gen2? > But yes, it seems we may be limiting the theoretical maximum data rate > for the wifi this way. It looks like the peak wifi speed for these chips is 3.6 Gbps, and it may be lower for the X13s (and in practice). So 500 MB/s should be more than enough. https://www.qualcomm.com/products/technology/wi-fi/fastconnect/fastconnect-6900 Johan