From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mout-p-103.mailbox.org (mout-p-103.mailbox.org [80.241.56.161]) (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 68A463A1686; Sat, 2 May 2026 21:34:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=80.241.56.161 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777757655; cv=none; b=RvYctMbpKSpfIwi3ywJ3RIyUOp87d9gewU1xrTzVjmoZVrKSGoLhC8Afk7EekveIhIRl+76HCUuBXDlWH+J6RVTi0v/M+r4KYaaLLw8xYYRhwEs85iCjWvobZ3IRBig8pxl85eCEbuCETBwv5s1L33WCu4gceYYNFbG3P85ZO0c= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777757655; c=relaxed/simple; bh=aTizUp77vFtdaVut/y6EEzccWuA3wNr4gRWnrrdF4zQ=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=nstkQjZapshrwhO5FjwO0htB/4hoPCtPktjxmDyeb03r02FNFH9vcc7pUX4z+9hIdR6feIgmTi0tiLx6XdB6CECbBeD8whMBmwEmr+fKWIrEYMObcFndamXh7MMIMz67Xn25MHyAOAmMWIMMGtTHOGE3aIKDcCTttXJrRoAn0Do= 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=knvsL8k1; arc=none smtp.client-ip=80.241.56.161 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="knvsL8k1" 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 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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 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.