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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C852CCD3424 for ; Sat, 2 May 2026 21:25:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=krWvEte6rzYQK7UVqWb8Xrr0bPg1zlcGnKUfpj6lNEw=; b=alO5LBRrDjU0E1IITobhGIjhhm 4D4HmjvVqPiCJg7rE5QhXJ1NvqtPMg7aIS8SsJA/PUhRfc1fJQx4b64YHmX1ifyy8IgVz5b9jY1Y2 P/nz0PIaMrnkBOy/gv5og5q9uodz/1p/X9cjvDbMa6zYd/OfcVymEH5N+X/tQhWx+Be4jwvnuLZN2 G7CjhVOtXEYCd0wIitDgzul1qRLpv18GeiMABYEsajFv+U3fRhYKkRC9jZ6dsnKS2yPfiGgfTWa+p LP0YH2SXUkPW+00Z8nsIDhNuBNIggwHXIYoGe8aLLT+8zmNjniLAmTEwWjCYbUr4GY3hz0+tHueJO QkoU0n6g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wJHq1-00000009j5U-1XrG; Sat, 02 May 2026 21:25:25 +0000 Received: from mout-p-103.mailbox.org ([2001:67c:2050:0:465::103]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1wJHpy-00000009j4j-0iER for linux-arm-kernel@lists.infradead.org; Sat, 02 May 2026 21:25:23 +0000 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-103.mailbox.org (Postfix) with ESMTPS id 4g7LXs1LTVz9tjW; Sat, 2 May 2026 23:25:17 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mailbox.org; s=mail20150812; t=1777757117; 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=krWvEte6rzYQK7UVqWb8Xrr0bPg1zlcGnKUfpj6lNEw=; b=knvsL8k12JbPXpYAlE9cBexu30rqoUtTFLzP18ypZSmRCQPvA/hch4OLnCGgip9mSiF17t 2sFEMq2QuB84fTcucGgg+aAC1VQ/v1WOjLI4xQTvz1zpaaSH3YUELU//a2fRpHLY7DNnL0 +01jP0ak5enIm3CWv2Zvz3YEheA7CdBHUeATtHWkFO20v1Td4XLRx38Tx4qS7uBOUvwo0N Qry9PMuiJ+vXurTP60Wc3kNEGqOJLdM2ckDM4IcwIZOoId2ryzCZIhDB9Vv8Jf7qa850BO L8PCX6o4eBHX6TmsUL5qXFs8bZx0q3skIid21QoyjqrksGWRrn0panx7kh/EYQ== Message-ID: <321547f5-40b6-449f-8a6e-5396b70823e6@mailbox.org> Date: Sat, 2 May 2026 23:25:02 +0200 MIME-Version: 1.0 Subject: Re: [PATCH 2/7] drm/rcar-du: Add support for Renesas R-Car R8A779MD M3Le To: Geert Uytterhoeven Cc: linux-arm-kernel@lists.infradead.org, Conor Dooley , David Airlie , Kieran Bingham , Krzysztof Kozlowski , Kuninori Morimoto , Laurent Pinchart , Magnus Damm , Maxime Ripard , Michael Turquette , Rob Herring , Simona Vetter , Stephen Boyd , Thomas Zimmermann , Tomi Valkeinen , devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org References: <20260419193718.133174-1-marek.vasut+renesas@mailbox.org> <20260419193718.133174-3-marek.vasut+renesas@mailbox.org> Content-Language: en-US From: Marek Vasut In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-MBO-RS-META: wgjgs6jskon4uskfcndud97puhskkd3w X-MBO-RS-ID: 03f2f67987000091c2f X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260502_142522_382368_04ABFCD4 X-CRM114-Status: GOOD ( 13.51 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 4/29/26 12:10 PM, Geert Uytterhoeven wrote: Hello Geert, > On Sun, 19 Apr 2026 at 21:37, Marek Vasut > wrote: >> Add support the Renesas R-Car R8A779MD M3Le SoC. This SoC is >> similar to R-Car R8A77965 M3-N SoC, except the HDMI port@1 is >> not present. > > "and DU1 is unused." (whatever that may mean...) Fixed in V2. >> +++ b/drivers/gpu/drm/renesas/rcar-du/rcar_du_drv.c >> @@ -564,6 +564,30 @@ static const struct rcar_du_device_info rcar_du_r8a779h0_info = { >> .dsi_clk_mask = BIT(0), >> }; >> >> +static const struct rcar_du_device_info rcar_du_r8a779md_info = { > > Assuming for this review we do need a new compatible value... I will be dropping this part in V2. [...] >> static const struct of_device_id rcar_du_of_table[] = { >> { .compatible = "renesas,du-r8a7742", .data = &rcar_du_r8a7790_info }, >> { .compatible = "renesas,du-r8a7743", .data = &rzg1_du_r8a7743_info }, > > I also don't know where "M3Le does not support 4K output." (which is > a VSP2 limitation) is to be handled. R-Car Gen3 RM R19UH0105EJ0230 Rev.2.30 Aug 31, 2021 Page 2468 32.1.1.1 Features of VSPI [R-Car H3/R-Car H3-N/R-Car M3-W/R-Car M3-W+/R-Car M3-N/R-Car E3] point Video processing and point Performance of VSPI indicates R-Car E3 has similar limitation due to VSP bandwidth. Currently, this seems to be up to user to avoid the higher resolution operation on hardware which has lower VSP bandwidth.