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 D9E6B311953; Fri, 14 Nov 2025 10:47:30 +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=1763117251; cv=none; b=GJcZuYBHihbF+Z7noAW9fxuVMQhGyHqIn7+95WWA2qwuSSXB1t5HL1jA8V1Ps0aLlToMplq6EqsFOGVLGsAFyvTSWIYsOAuH1D9CR+vwo5NAm6MYSbn7URbPrTUlUMa0FNAomFoU9VTjygkliKDFFt/ADi17IyJfMKFsWREXrjI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763117251; c=relaxed/simple; bh=Ujxt0bKnawMVqWrfFRuOoNc9wK3U+NR3iMqNJjRps5Q=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=tB9FZL9ALnagtxR0vMYZr6kr4/Sdxy2l34TXaZRd5qDpyoiq2+vHB/uch6EHYalD0TMZYitX+WHMTxWGTep2WQQw5V7OLN6f5rHwS+8fCucinX9qmVZykVZNG+7oFy3X3JKgvIadB7wSqZmjsQxd5SwVgVE1Kv0OpyAJutDGVkg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=S1ANFTW2; 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="S1ANFTW2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 74EF4C113D0; Fri, 14 Nov 2025 10:47:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1763117250; bh=Ujxt0bKnawMVqWrfFRuOoNc9wK3U+NR3iMqNJjRps5Q=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=S1ANFTW25lRWDOyLIqj17WOL0xqqbmY56vgbZMSZbK+cGJITHT8X0kiFUpTAd83aX GQdNkh9IXgE7lUoRzvjUZzsl29+F2UqaOfupsew3VEJ5Brf5JzswTyx3iMkXELIyKm 2U8HeNjfFZSRYnrZroWi9e5tBan1G1Nob+btGy4iw/nrwojG51e+cXD3LdhYdrMpcP 8rSDzV+hncyjtz24jabfQLFSrd0g680EZxue7Un2Fz43u8b0AeWsJWS6h+x9Y/vyO1 EiDzFMLJiYybB9TQ+dd+I0L2WLnat3awdRthQdV5N9yhOHLW5c2dh27n6QJDOiQHjq +2VQAZtlh0Tww== Message-ID: Date: Fri, 14 Nov 2025 11:47:25 +0100 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/2] dt-bindings: wireless: ath: Deprecate 'qcom,calibration-variant' property To: Manivannan Sadhasivam , Jeff Johnson , Johannes Berg , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, ath10k@lists.infradead.org, ath11k@lists.infradead.org, devicetree@vger.kernel.org, ath12k@lists.infradead.org, Miaoqing Pan References: <20251114-ath-variant-tbl-v1-0-a9adfc49e3f3@oss.qualcomm.com> <20251114-ath-variant-tbl-v1-2-a9adfc49e3f3@oss.qualcomm.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 14/11/2025 11:22, Manivannan Sadhasivam wrote: > On devicetree platforms, ath{10k/11k} drivers rely on the presence of the > 'qcom,calibration-variant' property to select the correct calibration data > for device variants with colliding IDs. > > But this property based selection has its own downside that it needs to be > added to the devicetree node of the WLAN device, especially for PCI based > devices. Currently, the users/vendors are forced to hardcode this property > in the PCI device node. If a different device need to be attached to the > slot, then the devicetree node also has to be changed. This approach is not > scalable and creates a bad user experience. > > So deprecate this property from WLAN devicetree nodes and let the drivers > do the devicetree model based calibration variant lookup using a static > table. > > This also warrants removing the property from examples in the binding. > > Signed-off-by: Manivannan Sadhasivam > --- The problem - visible in one of the examples here - is that one board has multiple WiFi chips and they use different calibration-variant properties. How do you find the right calibration variant for such case based on board machine match? Best regards, Krzysztof