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=-5.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=ham 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 CDEF5C2BA83 for ; Thu, 13 Feb 2020 10:00:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AA7F72073C for ; Thu, 13 Feb 2020 10:00:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729657AbgBMKAF (ORCPT ); Thu, 13 Feb 2020 05:00:05 -0500 Received: from mout.kundenserver.de ([217.72.192.74]:48531 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729531AbgBMKAF (ORCPT ); Thu, 13 Feb 2020 05:00:05 -0500 Received: from [192.168.178.45] ([109.104.45.70]) by mrelayeu.kundenserver.de (mreue106 [212.227.15.183]) with ESMTPSA (Nemesis) id 1MGyl3-1jFfgV0HC7-00E8DN; Thu, 13 Feb 2020 10:59:48 +0100 Subject: Re: [PATCH] ARM: bcm2835_defconfig: add minimal support for Raspberry Pi4 To: Marek Szyprowski , Nicolas Saenz Julienne , linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org References: <20200212102009.17428-1-m.szyprowski@samsung.com> <5adcb2de-3570-9c4d-5e5b-726b94fb2029@samsung.com> From: Stefan Wahren Message-ID: <916c0113-9910-26cd-3720-15399fde507b@i2se.com> Date: Thu, 13 Feb 2020 10:59:46 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: <5adcb2de-3570-9c4d-5e5b-726b94fb2029@samsung.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Content-Language: en-US X-Provags-ID: V03:K1:rqjER1Wpxcp48iehpHocS30UWq5iynTkVomtysQANDNAsxQUZBr dpG3OaBTB/7yXyaPOULjiyFytd/2r48rtEt52nhmdVwrYdmJOoirHVd7MchHYtFRr7Y00gi 5ErUxFr/yw4yv3YsuIMklWSjllbk5ohw+Sv8VeE5QsRBC4kDpp/Ck4JXGluZY0StD5xyV7P LaZo/d6mNLiZZuX8hNVkg== X-UI-Out-Filterresults: notjunk:1;V03:K0:yn/y25ko+sQ=:YBuWtfcDihwiPv5UiEgeWY jlFhaWYcVsFAfdHx5jBoBUsOOUghY+Eys6ivMNx3FQeaffWvEeWMMRG59zWPnpR5YqMoRUQbt NpYqHR2yUadaSWgLI5CW2H9rOHI8FVuE+hSvtt6FhFTlP6BlbqNlhl2935J93m2hCLAIGjg1E TjmBFmxq6700QQTt+kUUUbtMqst7dT13JxJJlodaIv5JUQ0xPx/y9g87nEUN+49LJ62sfEUkC cyeuG6U7Zh8SmC+kF2ZQfKBJujfROi34DYMHF3JWrVe4NMfukhJ8KiS37Z58XlXPr99CQwUH2 4TfTC2GzjYfXQ4apGzqciPfqqC9QyeO4LMicxdBmcdgDtr4diOMs30PvPhWvFCaQow4bJ/RaD VgfXZ1vFgC5/Fo+orsheeYfYkX0aHHOqmqrAUl32DKb7JYinKAvuWINkJ3LMVcNvCwCT0C4Gx Zmo5Xeca0odMP8jZaQHShEh89IUE2TXTLkxKGoPvjDmJyS+6lZRz3R2Vh5sKJb5Ql1rXAwdBK 7zTYNTZHkTZ4F7Z/x7erJ9LKn1mZv3LpT2uZHdWOr+M7x90L9NYhn9r0uKFL3ZFS7xKcsYLYW LZyG8GC28T8FWMv00i8IWS0mC8x+oyBXB5O1oBcDKqiQK6CMbmGkr/KIK19NaTOVcTUM1YD85 SrOI0ajNQVxmCmrpFLPnnaCsyyAeTDvGwSDpac58HvNXSx2tPPNeMNBMCaK/PyGMumbGlAVMh CicEIcSBivprYSwdWuY1OJ9pPgFI7hNs2VV3TaYdv055qjXjhSAq9U8zVuJ9b6/3ZGsVDH6lq neGrgMY1FV3+tGsWkrMTGurrs22zKA69eECG4QzMtf+FxmcDzqlgPvYSmIZijp5qHZ4fYKK Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Marek, On 13.02.20 08:35, Marek Szyprowski wrote: > Hi Nicolas > > On 12.02.2020 19:31, Nicolas Saenz Julienne wrote: >> Hi Marek, >> On Wed, 2020-02-12 at 11:20 +0100, Marek Szyprowski wrote: >>> Add drivers for the minimal set of devices needed to boot Raspberry Pi4 >>> board. >>> >>> Signed-off-by: Marek Szyprowski >> Just so you know, the amount of support on the RPi4 you might be able to get >> updating bcm2835_defconfig's config is very limited. Only 1GB of ram and no >> PCIe (so no USBs). > Yes, I know. A lots of core features is missing: SMP, HIGHMEM, LPAE, PCI > and so on, but having a possibility to boot RPi4 with this defconfig > increases the test coverage. in case you want to increase test coverage, we better enable all Raspberry Pi 4 relevant hardware parts (hwrng, thermal, PCI ...). This is what we did for older Pi boards. SMP, HIGHMEM, LPAE are different and shouldn't be enabled in bcm2835_defconfig from my PoV. Best regards Stefan