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 EA5F3CD5BD0 for ; Mon, 25 May 2026 12:27:25 +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=z5Uht39vr75GvbXhlhmve8BdPrujLfsmE7MQhBRtb8M=; b=mWcSZXu2jS8FUzZ1dSav1GykBI ZTh2ciUcdfD8UBrWu59NNYxw3f0q3PZRRJKWKByZB3Fr/UV3c0M1mxY4woGPwPYvWDbgy7wJmg1M8 GTewLbuowyPe9KK/E+B/FVfEgm1bvwh/q2BO7VDPgNM21GoH4HJ1B2cKoEwf4GLSgxfUzTtnfbsL0 whvce3tuShQGOBTXZ3jLdCT5LYkdAHqYO7BATbvBuNjuPOU82j0vsEBuvdevUjAFVOhXsqUYN5vO7 jSpcaaxRcNqkkfcecuLJ6FTko33yyZs6sesZT0OkWnEQy51cZhlgqZTpFVJQVdwyeZ/Yxbe66wRCR hxugGI3w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wRUOt-0000000HBbU-3xug; Mon, 25 May 2026 12:27:19 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wRUOr-0000000HBaz-2lLA for linux-arm-kernel@lists.infradead.org; Mon, 25 May 2026 12:27:18 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id D307F403AB; Mon, 25 May 2026 12:27:16 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F23881F000E9; Mon, 25 May 2026 12:27:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1779712036; bh=z5Uht39vr75GvbXhlhmve8BdPrujLfsmE7MQhBRtb8M=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=c53Pezhshq6PGFgPDAGIkeDKWZHodAXEt/gCyqrUh30GuDrbJzvVjZOLUD0zHsJln Y2Wgkp2UW/AN5koRiMlnZ5KfBlvvIWNaDtmn/6A52/kmMamv1TkbwlRePzIFX++qV8 Wur9BMSyzadpYH/hAms5HfJzLVBZHYFrigxILrq+LkYzzdc4mNDZa45YMdfvJ0dSs5 Rruvwaw49c2jDpAcE4P5H+y4kGaU/LqWPY4TIQthCh1+34TGItRji/KurD6e3lE8+f vnLKi3XkTuNTWEQEA8FiMxeeL2Pux1D/jbkeOpgMsytHcPbOSdY88F73CZcNLZgyyI GxeDZ5vlbJqXw== Message-ID: <71629b97-a971-484c-9388-b3fb35adb982@kernel.org> Date: Mon, 25 May 2026 14:27:11 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v6 05/10] dt-bindings: arm: fsl: Add solidrun lx2160a twins board To: Josua Mayer Cc: Shawn Guo , Li Yang , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Rob Herring , Krzysztof Kozlowski , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Yazan Shhady , Jon Nettleton , "linux-arm-kernel@lists.infradead.org" , "devicetree@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "imx@lists.linux.dev" References: <20260512-lx2160-pci-v6-0-d0ff72d3c983@solid-run.com> <20260512-lx2160-pci-v6-5-d0ff72d3c983@solid-run.com> <20260514-macho-white-tapir-4f8cf2@quoll> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260525_052717_736641_7DC90698 X-CRM114-Status: GOOD ( 17.51 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 14/05/2026 12:12, Josua Mayer wrote: > Hi Krzysztof, > > Am 14.05.26 um 08:43 schrieb Krzysztof Kozlowski: >> On Tue, May 12, 2026 at 04:39:00PM +0200, Josua Mayer wrote: >>> The SolidRun LX2160A Twins board supports two configurations, one with >>> with a sinle CEX-7 module, and one with two (dual). >>> >>> The dual configuration was not yet tested. >> And how do see dual configuration? New compatible? For the same >> hardware (the same because from SoC point of view it will be exactly >> the same)? > > From SoC point of view the sides are different, and the hardware looks different > when it is assembled for dual configuration. Most notably each cpu in dual > version only sees 12 SFP connectors each, while the single sees 20. > > Further the port numbering might be different between left and right side cpu. > > Finally there are some complications in the current pcb version with resource > distribution (i.e. fans, leds). > >> >> You must post complete binding, otherwise this feels risky and when you >> actually try running dual configuration you will see that existing >> binding makes no sense. > > I thought about this and decided against it. > > The single version is simple to describe, the cpu always sits in the right side socket, > sees 20 SFP connectors and has full control over every peripheral. > > The dual version will require different description even if only one cpu is installed. > > Currently dual is hardware only without any software, and changes may or may not > be made to the PCB to simplify things. Therefore I avoided drafting any bindings. OK, one compatible is also fine, but your earlier explanation this should be part of the commit msg. Best regards, Krzysztof