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 5BBA9C433F5 for ; Tue, 30 Nov 2021 08:14:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239519AbhK3IRS (ORCPT ); Tue, 30 Nov 2021 03:17:18 -0500 Received: from mail-ua1-f49.google.com ([209.85.222.49]:45030 "EHLO mail-ua1-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234251AbhK3IRR (ORCPT ); Tue, 30 Nov 2021 03:17:17 -0500 Received: by mail-ua1-f49.google.com with SMTP id p2so39590773uad.11; Tue, 30 Nov 2021 00:13:58 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=M9TvqAb2dbPQyUlV58mO9YTh/iv9wO/YMHLV7b29cnQ=; b=MXgna4NA14LqLIGEmBKtDbgt+FbXddtya56WNgp5S8pIFOjP9lwzHGZXMOdawWe3eA m8LmqOZHs/CbzRKSjKhFhbmnwsiUVWhl/GpE5M2iqqKK3bcRRfYuEDZ07BR6RgswmoTz UnunyuvdHFyCxR4G/UBnBUlOYTXcZwHQLqUAqdvPKQOrxY9oYaMYqvLvx0EJB5HiTdnL eixHWF7gQBAjjdCa4akmULq9bZ1oVoU+xfni20xWfjLpZuFUXaQLnqeCuhsLIepVDt3E gsKMKZCH/eL6uN68KKNzxPPy7XfWI7eYe68aoG4InGviuJsvvzCfaeRwtlXKgDEKbKea LuSQ== X-Gm-Message-State: AOAM533ATsxunpnPQIvnTq8SI4DyE81ICYIvGNNu7CjpBeWRpVy+TypS YvWz+qUPYllhwqzWde4mFvnR+4BEKAB1VQ== X-Google-Smtp-Source: ABdhPJwOzdxFVSvcscdkZs7Yx7wDK4ztOjFR+Svhdold1XibDsmZZM150HjeKuCnJXx8t+WWrVYoCw== X-Received: by 2002:a05:6102:11e3:: with SMTP id e3mr38127910vsg.29.1638260037575; Tue, 30 Nov 2021 00:13:57 -0800 (PST) Received: from mail-vk1-f170.google.com (mail-vk1-f170.google.com. [209.85.221.170]) by smtp.gmail.com with ESMTPSA id u20sm9627679vke.0.2021.11.30.00.13.56 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 30 Nov 2021 00:13:57 -0800 (PST) Received: by mail-vk1-f170.google.com with SMTP id f7so13000735vkf.10; Tue, 30 Nov 2021 00:13:56 -0800 (PST) X-Received: by 2002:a1f:4641:: with SMTP id t62mr25229885vka.0.1638260036796; Tue, 30 Nov 2021 00:13:56 -0800 (PST) MIME-Version: 1.0 References: <20211124150757.17929-1-noralf@tronnes.org> <20211129093946.xhp22mvdut3m67sc@houat> In-Reply-To: <20211129093946.xhp22mvdut3m67sc@houat> From: Geert Uytterhoeven Date: Tue, 30 Nov 2021 09:13:45 +0100 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH 0/6] drm/tiny/st7735r: Match up with staging/fbtft driver To: Maxime Ripard Cc: David Lechner , =?UTF-8?Q?Noralf_Tr=C3=B8nnes?= , Rob Herring , "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , DRI Development , Linux Fbdev development list , linux-staging@lists.linux.dev, Dave Stevenson Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Hi Maxime, On Mon, Nov 29, 2021 at 11:17 PM Maxime Ripard wrote: > The problem that fbtft (and this series) wants to fix is completely > different though: it wants to address the issue the users are facing. > Namely, you get a cheap display from wherever, connect it to your shiny > new SBC and wants to get something on the display. > > In this situation, the user probably doesn't have the knowledge to > introduce the compatible in the kernel in the first place. But there's > also some technical barriers there: if they use secure boot, they can't > change the kernel (well, at least the knowledge required is far above > what we can expect from the average user). If the platform doesn't allow If you can change the DT, you can introduce a vulnerability to change the kernel ;-) > access to the DT, you can't change the DT either. How do people connect a cheap display from wherever to their shiny new SBC and make it work, without modifying DT? 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