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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 945C6C77B61 for ; Tue, 25 Apr 2023 12:16:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233923AbjDYMQh (ORCPT ); Tue, 25 Apr 2023 08:16:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40306 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233407AbjDYMQf (ORCPT ); Tue, 25 Apr 2023 08:16:35 -0400 Received: from fllv0016.ext.ti.com (fllv0016.ext.ti.com [198.47.19.142]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2B99A4EF1; Tue, 25 Apr 2023 05:16:33 -0700 (PDT) Received: from lelv0266.itg.ti.com ([10.180.67.225]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id 33PCGMcH028997; Tue, 25 Apr 2023 07:16:22 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1682424982; bh=DcmUqEr18jXBjOZ9gLE7XXP9zUzdrnjYOXhf8sLJgxk=; h=Date:Subject:To:CC:References:From:In-Reply-To; b=BCfQk0i/ZFNimMdMbXtwag1CL6DqwM4+BUPoa0qg6CSjkFbA3IR1lFFNPGaP+BZaD WxVEnjzoBhBiTsCsIxt6qUs7LR9eN9lNYYJnOFFGnnHXuYvv5s3Ukn30vsFMEnONv0 pd9/zFqyZPYNR4v84V9d0a6/VwF9ln3IlfEitdB8= Received: from DLEE113.ent.ti.com (dlee113.ent.ti.com [157.170.170.24]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 33PCGMXk115096 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 25 Apr 2023 07:16:22 -0500 Received: from DLEE114.ent.ti.com (157.170.170.25) by DLEE113.ent.ti.com (157.170.170.24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.16; Tue, 25 Apr 2023 07:16:22 -0500 Received: from lelv0327.itg.ti.com (10.180.67.183) by DLEE114.ent.ti.com (157.170.170.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.16 via Frontend Transport; Tue, 25 Apr 2023 07:16:22 -0500 Received: from [10.24.69.79] (ileaxei01-snat.itg.ti.com [10.180.69.5]) by lelv0327.itg.ti.com (8.15.2/8.15.2) with ESMTP id 33PCGIZm006054; Tue, 25 Apr 2023 07:16:19 -0500 Message-ID: Date: Tue, 25 Apr 2023 17:46:18 +0530 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.9.0 Subject: Re: [EXTERNAL] Re: [PATCH v14 4/8] arm64: dts: ti: k3-j721s2-common-proc-board: Enable SERDES0 Content-Language: en-US To: Roger Quadros , , , , , , , , CC: , , References: <20230331090028.8373-1-r-gunasekaran@ti.com> <20230331090028.8373-5-r-gunasekaran@ti.com> <86ab17b2-d35a-16e2-7791-9e7a13c8e632@kernel.org> From: Ravi Gunasekaran In-Reply-To: <86ab17b2-d35a-16e2-7791-9e7a13c8e632@kernel.org> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Roger, On 25/04/23 5:15 pm, Roger Quadros wrote: > Hi, > > On 31/03/2023 12:00, Ravi Gunasekaran wrote: >> From: Aswath Govindraju >> >> Configure first lane to PCIe, the second lane to USB and the last two lanes >> to eDP. Also, add sub-nodes to SERDES0 DT node to represent SERDES0 is >> connected to PCIe. > > Is USB0 expected to work in super-speed on this board? > If yes then you need to add USB0 lane information as well. > Otherwise please ignore my comment. > The SerDes on J721S2 can simultaneously support only two protocols. By default PCIe and DP will be supported. Due to this, USB is configured in high-speed and this does not require any SerDes lane configuration. >> >> Signed-off-by: Aswath Govindraju >> Signed-off-by: Matt Ranostay >> Signed-off-by: Ravi Gunasekaran [...] > > cheers, > -roger -- Regards, Ravi