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 577FCC32793 for ; Wed, 18 Jan 2023 14:04:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229802AbjAROD7 (ORCPT ); Wed, 18 Jan 2023 09:03:59 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60344 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231126AbjARODc (ORCPT ); Wed, 18 Jan 2023 09:03:32 -0500 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 812483C2F; Wed, 18 Jan 2023 05:39:10 -0800 (PST) Received: from pendragon.ideasonboard.com (213-243-189-158.bb.dnainternet.fi [213.243.189.158]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 434D7158E; Wed, 18 Jan 2023 14:39:08 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1674049148; bh=z6/1ugtEqIPsW6HeLc7cP9ykrW1lmEKW7n77LGtAvGs=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=TF5LGQ2V9lfP5/L0a8+RvazAmRTdz+9ol4iSdyWytTYH40zRLOmTrFvAGTm2m21Po HcFEqUwrvfzcdmk9YotuaGbCx/YIDA5h1chHHiArnjRlw1oZujzdssVjjyt/up2BGn ssKh15IsX2cU/LtqnMs3dHtugw+k7gb1iHPLzy/c= Date: Wed, 18 Jan 2023 15:39:06 +0200 From: Laurent Pinchart To: Geert Uytterhoeven Cc: Wolfram Sang , linux-renesas-soc@vger.kernel.org, Kieran Bingham , Mauro Carvalho Chehab , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] media: renesas: vsp1: blacklist r8a7795 ES1.* Message-ID: References: <20230118122003.132905-1-wsa+renesas@sang-engineering.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Geert, Wolfram, On Wed, Jan 18, 2023 at 02:30:51PM +0100, Geert Uytterhoeven wrote: > On Wed, Jan 18, 2023 at 2:21 PM Laurent Pinchart wrote: > > On Wed, Jan 18, 2023 at 01:20:02PM +0100, Wolfram Sang wrote: > > > The earliest revision of these SoC may hang when underrunning. Later > > > revisions have that fixed. Bail out when we detect a problematic > > > version. > > > > > > Signed-off-by: Wolfram Sang > > > --- > > > > > > The BSP tries to work around the issue, yet this is neither upstreamable > > > nor are we sure the solution is complete. Because the early SoC revision > > > is hardly in use, we simply "document" the problem upstream. > > > > The workaround isn't upstreamable as-is, but I think it could be > > upstreamed after being cleaned up. > > > > Overall, how much support do we still have upstream for H3 ES1.x, and do > > we need to keep it ? H3 ES.1x is relatively old, does someone still rely > > on it ? > > I think the upstream support level for R-Car H3 ES1.x is about the same > as for H3 ES2.0. Question is, do we need to keep it ? :-) And if we do, instead of black-listing devices in the VSP driver, how about dropping them from r8a77950.dtsi ? We already delete quite a lot of devices there. Note that without VSP support, you will get no display either, so the DU device (and the LVDS encoder) so also be deleted. -- Regards, Laurent Pinchart