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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 C6B17C433DB for ; Thu, 21 Jan 2021 15:16:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7B0D9239EB for ; Thu, 21 Jan 2021 15:16:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732706AbhAUPQf (ORCPT ); Thu, 21 Jan 2021 10:16:35 -0500 Received: from ssl.serverraum.org ([176.9.125.105]:60617 "EHLO ssl.serverraum.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732645AbhAUPPs (ORCPT ); Thu, 21 Jan 2021 10:15:48 -0500 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 AD5FD22F99; Thu, 21 Jan 2021 16:14:52 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=walle.cc; s=mail2016061301; t=1611242092; 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=NCqhHiLG+HIy/KpgWMep43uHSdTreIHEy2UEo+8BPmQ=; b=HNjygoJezksRVrvq/4vj1sKQDQb5mPiv2rc55WUhpe3aopQ7M2LIyyuEPBUtf9o03Zl113 ma8PB8ark1Pj8VS9ssD5D8gx0rIK3rVUkV83Aqzl/lPBfBF8KGHwKC+ZlgMxM6GkFwpo+/ IOYx1Od4kLHNbdITzw+8WcWLZ9lTJNU= MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Date: Thu, 21 Jan 2021 16:14:52 +0100 From: Michael Walle To: Michal Simek List-Id: Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Rob Herring , Arnd Bergmann , Olof Johansson , soc@kernel.org Subject: Re: [PATCH 0/3] add Ebang EBAZ4205 support In-Reply-To: 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 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Am 2021-01-21 14:16, schrieb Michal Simek: > On 1/21/21 11:41 AM, Michael Walle wrote: >> 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? > > If you promise to regularly test it I am fine with it. I might even integrate it into our lava lab. -michael