From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AD816606A326 for ; Fri, 6 Nov 2026 17:10:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=0nzxHDwh; dkim=fail reason="signature verification failed" (2048-bit key, unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20260707 header.b=yoGdAQms DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Unsubscribe-Post:List-Owner; bh=CJqFysHxb6qTEiOPjpo3jmpQk/FRfxpV1YH4k59HMQ0=; b=0nzxHDwhPGJklk6Dr7I/dffn3u 4UCJ8p5xwnXdFcS174pb3Y6cN/q7xlILcHdjtL0GuZ8FGvfjUO3zGdyURUAaUxzprLu8fhOtXGhFm ryT3MW0q7L+4TLtfThXdmlH2d7uP8Syllc9CGq5r/5zI19Fd6j3/N91peNAwdnv3V510408PlK/Ps 0P2sBu2ghdQqJhqX48j52yEGm0sMbIOK/mxwU89thduUICs5YcU8h+jWAtxQXnqLROXR0P1MEs0lT 9jnUUVHUD6m1Scvcjdlivd/ruxGc7ZBpRF5IFiNbfOewSEMaYiSMHf9tAko//H8Z5f1RwQMgxKtV/ GHuiabkQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.100.1 #2 (Red Hat Linux)) id 1xPNSP-0000000DBFP-1r79; Fri, 06 Nov 2026 17:10:29 +0000 Received: from mail-wm1-x32f.google.com ([2a00:1450:4864:20::32f]) by bombadil.infradead.org with esmtps (Exim 4.100.1 #2 (Red Hat Linux)) id 1xPNSJ-0000000DBCi-12Rj for linux-riscv@lists.infradead.org; Fri, 06 Nov 2026 17:10:27 +0000 Received: by mail-wm1-x32f.google.com with SMTP id 5b1f17b1804b1-4ac95761c85so6360095e9.2 for ; Fri, 06 Nov 2026 09:10:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20260707; t=1793985021; x=1794589821; darn=lists.infradead.org; h=in-reply-to:content-disposition:content-type:mime-version :references:message-id:subject:cc:to:from:date:from:to:cc:subject :date:message-id:reply-to:content-type; bh=V9n1CV17mWoyinWHCGFvDxtvvBlrLNzZtRYoJJeVLOM=; b=yoGdAQms3HxrX9mUpqVcpPKkC24Z/syKb44ws8h1rOyKi8sGeZFTlIonGcCfqFVJdE 2aRW5SBrxK+9wFARP5l42PjZNdPWdboCHy/qbJhMZn4GkWV2AvpDkGrBrPdewgBeGxQV EUqfRzVWJkgpebVUgV7Q3NkMdOOawPxS3mxkvsUR+4L2ByiPbjSkxp5BH2hNaELK2Mgn ousp4ppnD0DQRElsGtFRgxDZTWOI7jFzHdtw96jWhCi1nDPMi7m5zEURyj3WFQBBEC7m +fpa13ohQTbJTvIyH9o6T9N08sPLVhjye+02zvz50nifJAOTWkiLXlcqSCE2mV6NqV1J rwhA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1793985021; x=1794589821; h=in-reply-to:content-disposition:content-type:mime-version :references:message-id:subject:cc:to:from:date:x-gm-gg :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=V9n1CV17mWoyinWHCGFvDxtvvBlrLNzZtRYoJJeVLOM=; b=eciw5s//RSodD+12+OOViLeL5UHJQ2mMh4U096JAlXCairw3BmDhlF+XkuCzTm+eYs PyKbNKS5JZIxdjKPygxWStRk02wNQKqTQ7nvJP7MxoiDOUdaqtqWVCOoaK3QPRTFQXQ/ 9OJiXI42xheSP2GkpI4+Wlg++DYCijglLugio4wtALJIU5ZkOvtsJFsqoZiPpZGf1RjL dPIeU9hvCaSrhwMm2cnvUm91mWeZIC9xCy9x5QbdxxmyZtLsahXYXkGZCJRUrbl3Us7+ bbx/r/QvUH+nzQI+AvH4Jk6peCuqRNQ5sP3Q9pP+4VCyl0FPm+GqRxHyK3udJdO8AM0a tcJw== X-Forwarded-Encrypted: i=1; AKwUvBx79XoVe02W+njftfiaNfzLqZNxGcV6jCvmA0y8p0b1pU/YcFOKn3ZyO0RU8cnmfE/cictcP70yzVv5hQ==@lists.infradead.org X-Gm-Message-State: APuU4Z8vdDlclXoNsbPK6UoOsjwj2q7rHEaQRxNMBRnNBVHnYMTI/bMT iwXjXHE5S07uq183lQq4QtJz1x7rSvwnXNx+8lgLIwoc8316sKqoqbz8 X-Gm-Gg: AYBFou2SebYgfuKQn/nkM0tkQyrtOVnkmilBv/iwMZ5k/3S5saeaHjXjYm/NYEy1G1O 4b03q75mKl0NQxrM7a710v9+awkOEiTpm/dGmKvpb1LCcDxVOCY76VJZ8FJIXEUmMMMlBFFRaRz BDci2HN14nrwIVdddJpxmETZg4Uz2kENxAnTJRIrGJ9HYsu+9GuncVh4PynHfOmxvvPJl7LMiK7 6bn0pfOZrsu0/GjQxx2rJtnSaESuUZ3CjAe+kYMWgwnIAPEo8cbYCmyEbeK7lANj+VdhSJdKNK7 WScz7bkhSO24GCQLxljsHJinJGF9aDvHQfkjwf7cMqBZypM2kHnOd+wvzwHi4IXB4FFcfC2m65m BdFxsj4h9lRXWc1VfvDNCoP7Vq07ldBCF6g7Mhf9OkLe4EoR1i+oSj/EfTJJSluAXlKcHq2t1Yt ujQZEWCucXSRpDxbJPz1jlmR7OlCFU0/jMIW5KaWnc05PWPKUjgrZh8iv4y7M34Pb1tHzT4kItZ ICyXTv275I+cZyr2ragqhoK3JRTVAQrWPxMCGTRyiWbkZWeqDXCfXV45rcHi28vCeLnfFe5xlOL eGDos3Ukmx0ureh/FuhebL44tbkRBArc X-Received: by 2002:a05:600c:64c5:b0:4b0:a7aa:843 with SMTP id 5b1f17b1804b1-4b6df4f1dfdmr55413875e9.25.1793985021160; Fri, 06 Nov 2026 09:10:21 -0800 (PST) Received: from localhost ([82.77.126.113]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4b57317cae5sm238886225e9.12.2026.11.06.09.10.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 06 Nov 2026 09:10:20 -0800 (PST) Date: Fri, 6 Nov 2026 19:10:19 +0200 From: Daniel Matyas To: Nam Cao Cc: dri-devel@lists.freedesktop.org, linux-staging@lists.linux.dev, Andy Shevchenko , Greg Kroah-Hartman , Alex Lanzano , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Conor Dooley , Rob Herring , Krzysztof Kozlowski , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, devicetree@vger.kernel.org Subject: Re: [RFC] staging: fbtft: Moving fb_ili9341 (and others) to DRM Message-ID: References: <20261105201154.37294-2-matyasdaniel006@gmail.com> <874idv2bol.fsf@yellow.woof> X-Archived-By: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <874idv2bol.fsf@yellow.woof> X-Mailer: mutt X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261106_091023_334970_33A2E9B0 X-CRM114-Status: GOOD ( 16.67 ) X-Spam-Score: -1.9 (-) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" X-Spam-Status: No, score=-0.8 required=3.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_EF,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 On Thu, Nov 05, 2026 at 10:47:06PM +0100, Nam Cao wrote: > Daniel Matyas writes: > > Questions: > > a) Is removing fb_ili9341 acceptable, pointing users of other ILI9341 > > modules to panel-mipi-dbi? The KD233 node would then have no driver. > > b) Or should KD233 panel support go into a DRM driver first? I don't have > > its init sequence or physical size, or the board... > > c) Is removal of all of fbtft already planned? > > d) Several other fbtft drivers have drm counterparts. Should I inspect those > > to see if removal is needed? > > IIRC the main reason fbtft needs to stay is because it supports parallel > interface which is missing in the DRM drivers. > > Nam Thank you for clarifying. However, the fb_ili9341 driver uses only the SPI interface. Is it alright then to move (or remove) those drivers that only use SPI interface and have DRM counterparts? Furthermore, would there be a need to enable parallel interface support in the DRM subsystem? Daniel M _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv