From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mout-p-102.mailbox.org (mout-p-102.mailbox.org [80.241.56.152]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 790071548C; Sat, 17 Jan 2026 00:15:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=80.241.56.152 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768608916; cv=none; b=mXJU3QjfqANRYgyk1LbCb9ruDJn1bWcrnURmZU2AGpAIB/XSqpxbf5An4Udj0JiweAEglEx7KZLIIhdfJ/onY6H3goTsl/rlr6fzB6HaXebixou0OkjwDacwiVQqRzq5pxYyl8K3sQHQxqs4CI1zvSnAe1550Q9A6Xw1scX/+EQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768608916; c=relaxed/simple; bh=UBrEWpU3wE9Qp8IwcuyIpngZVwzcRikJyzYK3PFZDN8=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=pZIGHyw0hY164c9O8UmzfeztRFsLkUxqAY7MKXB9FcXzpNs1WRqumjWoKonmJgMAFREQlgb/PFCNScedFOYE6j6mu3itlnI16QmOXmfIG3005AerTkmeKZPbf3Mep0lXepO5HydV6og2XMCUgnk5drd86FzdkrzyzvgKyj3yVAo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=mailbox.org; spf=pass smtp.mailfrom=mailbox.org; dkim=pass (2048-bit key) header.d=mailbox.org header.i=@mailbox.org header.b=SlseDU4b; arc=none smtp.client-ip=80.241.56.152 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=mailbox.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=mailbox.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=mailbox.org header.i=@mailbox.org header.b="SlseDU4b" Received: from smtp202.mailbox.org (smtp202.mailbox.org [IPv6:2001:67c:2050:b231:465::202]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mout-p-102.mailbox.org (Postfix) with ESMTPS id 4dtH6d2WbNz9vC5; Sat, 17 Jan 2026 01:05:29 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mailbox.org; s=mail20150812; t=1768608329; 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=vKRa8QawqDzIvt7NlwnnBTWgzNog8p4CKpjNhH/1PZU=; b=SlseDU4bBi5Mixp/2CUPctSORnoqKjW7G6NTe8NUczv47/TLpZJ3wSLsb0RXNXdcvCe8ho W80dT5gSyPaLPdDCwH5/e1dUQ8LPZt8/epqox+nvOUXgzuGP5E/W8w9KOfS86dOgbDcM4M oCOl11muFj5GcQ+9rhQnVEbH69iboRxSKq7Z0ZJXHVdL2wSwBCxIvnVjNbLdkjcEmoxXpA ja5AaeZV4y9tXQQszI3jY270IVI6ijnsXBOwd4njHFSfShLrRb6o1WAvJrWUI/30YxsN+a iE327eJwfjgLsVG+qaGImQz+UqnwHApRCW1VPvWaxBkniPZPyE9E/ClljNBLFg== Message-ID: <7d2554e2-bc69-48c3-89c7-deb701d8a12b@mailbox.org> Date: Sat, 17 Jan 2026 01:05:24 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Subject: Re: [PATCH 1/2] dt-bindings: display: panel: Fork Waveshare panels into separate document To: Rob Herring Cc: linux-arm-kernel@lists.infradead.org, Conor Dooley , David Airlie , Geert Uytterhoeven , Jessica Zhang , Krzysztof Kozlowski , Maarten Lankhorst , Magnus Damm , Maxime Ripard , Neil Armstrong , Sam Ravnborg , Simona Vetter , Thierry Reding , Thomas Zimmermann , devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org References: <20260113000715.231238-1-marek.vasut+renesas@mailbox.org> <20260115174047.GA930768-robh@kernel.org> <85ff0eb2-d942-4f85-8f1d-c5982bd31bec@mailbox.org> Content-Language: en-US From: Marek Vasut In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-MBO-RS-ID: edcd393bf97bbd689c1 X-MBO-RS-META: r6q7zznwwkxqqc151rrxyqkmbmiaaqgw On 1/16/26 4:26 AM, Rob Herring wrote: > On Thu, Jan 15, 2026 at 1:20 PM Marek Vasut wrote: >> >> On 1/15/26 6:40 PM, Rob Herring wrote: >>> On Tue, Jan 13, 2026 at 01:05:30AM +0100, Marek Vasut wrote: >>>> Move the Waveshare panels description into separate document, so they >>>> can be properly described with compatible = "waveshare,...", "panel-dpi" >>>> and attached to "waveshare,dsi2dpi" bridge. >>> >>> But why do we need "panel-dpi"? Adding that requires changing a DT. >>> Can't you make the kernel handle these compatible strings as a >>> "panel-dpi" without the compatible? >> I can, but wouldn't we then miss the more specific compatible strings in >> the DT ? >> >> compatible = "waveshare,13.3inch-panel", "panel-dpi"; >> ^^^^^^^^^^^^^^^^^^^^^^^^^^ >> this ... would be removed. Do we want that ? > > No, drop "panel-dpi". Or really, don't add it. > >> >> The other option would be to add the timings into panel-simple driver, >> then we wouldn't have to change the bindings at all. Maybe that would be >> preferable ? > > Why can't the "panel-dpi" driver match to"waveshare,13.3inch-panel"? It could, but then, if I am already patching that panel-simple driver, I can also simply include the timings in it, just like many other panels do.