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 X-Spam-Level: X-Spam-Status: No, score=-3.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 364DAC433E0 for ; Thu, 21 Jan 2021 10:43:12 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A9B78207CC for ; Thu, 21 Jan 2021 10:43:11 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A9B78207CC Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=walle.cc Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Type: Content-Transfer-Encoding:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:Message-ID:References:In-Reply-To:Subject:To:From: Date:MIME-Version:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=a36nT65+jxuTp6s1d15vC4Ynv4l4SXRsOH/rsJy5eoI=; b=MG3/Q2NP+OMB6IiQXdCl1kuYW xvWFz6AbHQyaLbqEGJsngovnjaf/tvvPamNQbII30HBMsittFcw16E6W9FsI9WGDraIPLVrDYeTN2 Vi3xoQVUFLVDPdIIi+w71We4oCP9uECl9RG71LSTDNhC8xvCNQuT30PKuERfAG07bXQB50MBXCgn3 sra1SDi7QhPfXP3GCX99BP4wKoNXVnRrFCRCHZ7j6W33eP+2+kfEj43EGW9SjY0jUpqOJpg5lUxBJ foAZdy4cIh1AQsR8aoa14FnfJfmpZ2l1J8Mt7orkgN23URp+VBOvq2Wuo3j2kzowuQtIyZI9ODMY4 4uKcEpF0w==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l2XPC-0008BR-TR; Thu, 21 Jan 2021 10:41:34 +0000 Received: from ssl.serverraum.org ([176.9.125.105]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1l2XPA-0008Ab-Cw for linux-arm-kernel@lists.infradead.org; Thu, 21 Jan 2021 10:41:33 +0000 Received: from ssl.serverraum.org (web.serverraum.org [172.16.0.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ssl.serverraum.org (Postfix) with ESMTPSA id 0B01622FAD; Thu, 21 Jan 2021 11:41:26 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=walle.cc; s=mail2016061301; t=1611225687; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=JDILWN2Qt0CRRMnHqdXZCjQvogas/S8Dy2MJuaJxQKk=; b=jC+SKLV/orq38gIrVKvQRdKd4J76RPnn0LqF4Vr8EwOfVD+f7XzPpnSFWHjDxMBql+/Ieb SUfOJajVatGzvLP2keWDGOdIYF9LNZAo00vXfO4Hil4mGO+XRb/PAOiOw1/hH5jsZbW4jp fyYxBLtSI35wjK6PQLFjp3ngBkrfckQ= MIME-Version: 1.0 Date: Thu, 21 Jan 2021 11:41:26 +0100 From: Michael Walle To: Michal Simek Subject: Re: [PATCH 0/3] add Ebang EBAZ4205 support In-Reply-To: <8917c9a1-09e9-0a39-5732-da7f555ae9ad@xilinx.com> References: <20210120194033.26970-1-michael@walle.cc> <0a1c6ebf-1d5b-4f06-56db-f04e87d2ae9a@xilinx.com> <8917c9a1-09e9-0a39-5732-da7f555ae9ad@xilinx.com> User-Agent: Roundcube Webmail/1.4.10 Message-ID: X-Sender: michael@walle.cc X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210121_054132_553210_730607B7 X-CRM114-Status: GOOD ( 19.87 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , List-Id: Cc: devicetree@vger.kernel.org, Arnd Bergmann , linux-kernel@vger.kernel.org, soc@kernel.org, Rob Herring , Olof Johansson , linux-arm-kernel@lists.infradead.org Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi, Am 2021-01-21 11:23, schrieb Michal Simek: >>> Back to your case. Board is cheap which is not all the time case for >>> any >>> xilinx board but you have only uart, sd and partially described >>> ethernet >>> which doesn't work without PL. Is it worth to have this described? >> >> I got your point. But it is at least a jump start for the users if >> that >> board boots out of the box. And yes, its unfortunate, that ethernet >> just works if the PL is configured. This is already done by the >> bootloader, because there I do have the same problem. > > Zynq/ZynqMP boards can use U-Boot SPL. "Advantage" of this solution > especially for Zynq is that in u-boot there is open a way for adding > ps7_init file which is determined by device tree name. > I think it would make sense to add these DTs and also ps7_init to > U-Boot > project and wire it up with zynq_virt platform and then you can boot > Linux with using U-Boot's DT pointed by $fdtcontroladdr. > Then you will get support from scratch to be able to boot. I already have patches for u-boot (using SPL). But my impression was that linux is the master for the device trees. Esp. if there are some problems with the board its often useful to have an in-tree device tree. What is the difference between this board and the other zynq boards in the kernel? In any case, please make this decision now: will you accept this device tree or not? -michael _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel