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 4667AC7EE22 for ; Wed, 10 May 2023 09:22:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236901AbjEJJWM (ORCPT ); Wed, 10 May 2023 05:22:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37648 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236574AbjEJJVx (ORCPT ); Wed, 10 May 2023 05:21:53 -0400 Received: from ex01.ufhost.com (ex01.ufhost.com [61.152.239.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 478C649C0; Wed, 10 May 2023 02:21:32 -0700 (PDT) Received: from EXMBX166.cuchost.com (unknown [175.102.18.54]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "EXMBX166", Issuer "EXMBX166" (not verified)) by ex01.ufhost.com (Postfix) with ESMTP id 5816224E2A9; Wed, 10 May 2023 17:21:25 +0800 (CST) Received: from EXMBX168.cuchost.com (172.16.6.78) by EXMBX166.cuchost.com (172.16.6.76) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Wed, 10 May 2023 17:21:23 +0800 Received: from [192.168.125.124] (183.27.98.219) by EXMBX168.cuchost.com (172.16.6.78) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Wed, 10 May 2023 17:21:22 +0800 Message-ID: Date: Wed, 10 May 2023 17:21:21 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.10.1 Subject: Re: [PATCH v3 3/3] riscv: dts: starfive: add tdm node and sound card Content-Language: en-US To: Emil Renner Berthing , Conor Dooley CC: Mark Brown , Liam Girdwood , Jaroslav Kysela , Takashi Iwai , Rob Herring , Krzysztof Kozlowski , Conor Dooley , , , , References: <20230506090116.9206-1-walker.chen@starfivetech.com> <20230506090116.9206-4-walker.chen@starfivetech.com> <20230509-overheat-pliable-00d60523637e@spud> From: Walker Chen In-Reply-To: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Originating-IP: [183.27.98.219] X-ClientProxiedBy: EXCAS064.cuchost.com (172.16.6.24) To EXMBX168.cuchost.com (172.16.6.78) X-YovoleRuleAgent: yovoleflag Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On 2023/5/10 16:33, Emil Renner Berthing wrote: > On Tue, 9 May 2023 at 20:05, Conor Dooley wrote: >> >> On Tue, May 09, 2023 at 08:52:48PM +0800, Walker Chen wrote: >> > Hi Conor/Emil, >> > >> > DT overlay is used to describe combinations of VF2 and hat. >> > Do you have any comments on this patch ? >> >> Up to Emil :) >> >> I seem to recall that he said at the linux-riscv sync-up call that we >> have* that he was not in favour of overlays for hats like this. >> I'll let him confirm that though, I might very well be misinterpreting or >> misremembering what he said. > > What probably meant was that I didn't want a bunch of different device > trees for each combination board * hat. An overlay makes a lot more > sense. However, looking through the kernel tree there is a surprising > lack of overlays for hats committed already, so I suspect there is > some sort of policy around overlays already in place. Hi Emil, About the specific usage of overlay for this board + hat, referenced to the following example in kernel: linux/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-imx219.dtso That board is connected with imx219 sensor via mipi_csi interface. That patch was accepted in 2022. So do you think this way is feasible ? Thanks! Best regards, Walker > >> Cheers, >> Conor. >> >> * https://lore.kernel.org/linux-riscv/mhng-775d4068-6c1e-48a4-a1dc-b4a76ff26bb3@palmer-ri-x1c9a/