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=-3.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 2F7DAC10F27 for ; Mon, 9 Mar 2020 08:32:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F01BF2067C for ; Mon, 9 Mar 2020 08:32:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Avi03q8c" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726567AbgCIIcq (ORCPT ); Mon, 9 Mar 2020 04:32:46 -0400 Received: from mail-wr1-f67.google.com ([209.85.221.67]:34521 "EHLO mail-wr1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726533AbgCIIcp (ORCPT ); Mon, 9 Mar 2020 04:32:45 -0400 Received: by mail-wr1-f67.google.com with SMTP id z15so9881756wrl.1; Mon, 09 Mar 2020 01:32:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=af2cfZjf9x1S9FZ9MDXkYOztGP6qP0GOneEhB/eEIC0=; b=Avi03q8clgrFOrP5q3tRQewNL0Fw0MR443djbetfTNlO/BnS3HlkfETHL3Tu63qtNv gvsi9LD2DzFzpVf0OPveF87+GFgPH4S16hoDLA+KSBIhEpn+v56HrnhqkgWcnzwpcvs0 xzcKX1XCRmZUfGbbDPLo5wyOzbQ6H8f6Ieo8y4XmMs+tN1NWsU8gvW4yOLLK39rBcji8 yqan3UVUJ9K/wW4TknQtHZ5r/iuBzOqAxVNMQHHG8VtjKlnfOv0OHlqVW595w/AWK7rP K2D6GjaTeqgQ6o99g8I6aOPQ/Jbc/HVZlJ24l+VrsYYumIbiXLL69FiR7dwrVhrCGWsC kPKg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=af2cfZjf9x1S9FZ9MDXkYOztGP6qP0GOneEhB/eEIC0=; b=VYSlpNIpbYAHLoBXH8xo4ZEkAfJLL5mMqJPMOzLrc1ESKzVfkWR5a+fafBD0RL6Sh7 06nUmTPz4c55lpQJTcWPOstMmrlPjtbh/l+ElrLu9eCVWIQNF1di/1e66kOcGUxNCf4Y M95ShbbJgPPOINe//wf8f1gWM8akl/0yNswkVu//WtipLZNEQ1lZ7LtkASiEQ69lfFe1 x9WZxU+Eg6ZxTox+RqpdgMw4i/Leu9TJgAxc7jN76q9zdzTWnfChjOHKPMniYVBlkzI4 Ot7Gh7Qk5VWaBMJZIWNPILPEBO8Zu1FVGACmPHYZix4r2CBh3VL9VZp086hYOUHVrX5j YD2g== X-Gm-Message-State: ANhLgQ3AsJhxXh1DWLyz+SV+p2SKcUyaWPShI/LTHwWyqk2L/MIpCRsH Aw1bvCjGsrp0arfY/lc4QkIbMiSzJz1ZlUrX/RY= X-Google-Smtp-Source: ADFU+vse2mrhpQWQ46FGqAThVW5dYVYVNTdtnUQxbnZFtx6sP4gIg5N4+80B7pi4VKVVc7UzQq04sWlnL39gJJ/hXbs= X-Received: by 2002:adf:e408:: with SMTP id g8mr20764712wrm.198.1583742761475; Mon, 09 Mar 2020 01:32:41 -0700 (PDT) MIME-Version: 1.0 References: <20200305103228.9686-1-zhang.lyra@gmail.com> In-Reply-To: From: Chunyan Zhang Date: Mon, 9 Mar 2020 16:32:04 +0800 Message-ID: Subject: Re: [PATCH 1/2] arm64: change ARCH_SPRD Kconfig to tristate To: Geert Uytterhoeven Cc: Greg Kroah-Hartman , Catalin Marinas , Will Deacon , Jiri Slaby , Linux Kernel Mailing List , Chunyan Zhang , "open list:SERIAL DRIVERS" , Baolin Wang , Orson Zhai , Linux ARM , kernel-team@android.com Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Geert, On Mon, 9 Mar 2020 at 16:03, Geert Uytterhoeven wrote: > > Hi Chunyan. > > On Thu, Mar 5, 2020 at 11:33 AM Chunyan Zhang wrote: > > From: Chunyan Zhang > > > > The default value of Kconfig for almost all sprd drivers are the same with > > ARCH_SPRD, making these drivers built as modules as default would be easier > > if we can set ARCH_SPRD as 'm', so this patch change ARCH_SPRD to tristate. > > > > Signed-off-by: Chunyan Zhang > > Can you actually boot a kernel on a Spreadtrum platform when all platform > and driver support is modular? Yes, even if all drivers are modular. But I hope serial can be builtin, then I can have a console to see kernel output before loading modules. Also, this's what Google GKI [1] asked :) Regards, Chunyan [1] https://arstechnica.com/gadgets/2019/11/google-outlines-plans-for-mainline-linux-kernel-support-in-android/ > > > +++ b/arch/arm64/Kconfig.platforms > > @@ -249,7 +249,7 @@ config ARCH_TEGRA > > This enables support for the NVIDIA Tegra SoC family. > > > > config ARCH_SPRD > > - bool "Spreadtrum SoC platform" > > + tristate "Spreadtrum SoC platform" > > help > > Support for Spreadtrum ARM based SoCs > > Gr{oetje,eeting}s, > > Geert > > -- > Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org > > In personal conversations with technical people, I call myself a hacker. But > when I'm talking to journalists I just say "programmer" or something like that. > -- Linus Torvalds