From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id ED3B7CE7AAE for ; Fri, 14 Nov 2025 11:05:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=6P466x/v0qfPEeLKiuEs2BtcEPRkDQg6/ldJqx4K5+Q=; b=Gm/d+eKcN+ruZ4IMSG0BqJsY31 t8bVgHPJRBtXrPtROParw8tNBztkzxw3LRqgZHYNfn2lnqnpHvA/Q5JWv25FDEI01lBRt523fjQ02 GSgkatnK2k3RrCCGCDlJI6MgNw2WhHTp8GviYYNX53U0Qv61CqVJFc/aV5//flRJTSH4l+ylKhkh6 FhbzgQSARBbiUG713dHeyzduACCt4NGxVHBoaaix90xtYZI3Y6CX1WPuhIMd9h5C1j0Jy2JnO3qVB 7ZpMRdCiX8Vj74yYFNXVWQAnjj5204VSMCYQDeU6KVfKSPze79AU3JhTtuC2si15r14dcf0TDvZR3 Xas90/ig==; 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charset=UTF-8 Content-Transfer-Encoding: 7bit X-BeenThere: ath12k@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "ath12k" Errors-To: ath12k-bounces+ath12k=archiver.kernel.org@lists.infradead.org On 14/11/2025 12:02, Manivannan Sadhasivam wrote: > On Fri, Nov 14, 2025 at 11:47:25AM +0100, Krzysztof Kozlowski wrote: >> 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? >> > > I suspect the legitimacy of the example here. I don't understand how a single > machine can have same devices with 3 different calibration data. Me neither but I am not the domain expert here. > > AFAIU, calibration data is specific to the platform design. And I don't see any > upstream supported devicetree having similar properties. Deprecating these is fine with me, but I would prefer if we get here some clear answers that mentioned case cannot happen. If you are sure of that, please mention it in commit msg. Best regards, Krzysztof