From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from relay8-d.mail.gandi.net (relay8-d.mail.gandi.net [217.70.183.201]) (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 4FAD419005F; Mon, 28 Oct 2024 08:02:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730102553; cv=none; b=W30jl9+IgKIWRWD/Wi8+kyUllk941rCfeu6nYlbFtbjoiJYwUdE+yP7YHRnQxgs99dYmxItHmUO++mz8ZbId6YTEM14Xzcq3+YQGHWs2P/xqlTMk3OO3Ur9KLShCF+/irLsY5ZwkuwnpkQgW4mmu10eDR7ltIpd3svX0TxDzXfo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730102553; c=relaxed/simple; bh=VFyDsvMJP6XxTZGDsHO7Fk7q/AiTFp3vQW+cD/emrW4=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=Mck4XDU3Dmkl5GWKeF1W70tgsSrJhxm4f4Dd7NTiGx8g//euuVLvm+qqXkcqRC2yOFQgf9Ip6VshIOgnASKRDZUaOq+TBVAV2Kf85HcAO7I4CanhEpg4OCXZmd1rECOHt08HlNIkR0A8OEoYsf+VBfEPxX0zbAYoXsEvSFAiGkY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=NId5SLoO; arc=none smtp.client-ip=217.70.183.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="NId5SLoO" Received: by mail.gandi.net (Postfix) with ESMTPSA id CF9131BF209; Mon, 28 Oct 2024 08:02:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1730102543; 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=sMdiMphrDVa/6WG8AanOiRAHLQzTBE/3PK643L9hPJ4=; b=NId5SLoO5WQXKd5a1otqq2vpVAAhxGahPioxT21lCSi3VIM/jsNDRCtcGVVojv2prUmPCf o67wuBKsTOTBaUdCjAZPkK+av73f0yVoNWkMfx7tV0DJkXw3aBPavgULEROsZ5d8BDyLv1 n39yty4ucmTC8D4BKYjODoil2Y5Q59Gch63hHuuzAHlBiaINn2207epgExQrk0e27zwrb+ PPQAthe51DupxtM1TSBnNnOH+RkZcYAzQsl37n7pbkCrDWk2nsRJCdw/PTH9eOT1pQ+rer qdZ3KRsDw6cw2XsS1DfTP8C3bzkX24C6QmwNspwU64S7dnLOfo/5hrgWBwK1AA== Date: Mon, 28 Oct 2024 09:02:20 +0100 From: Herve Codina To: Marek Vasut Cc: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , David Airlie , Simona Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Michael Walle , dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Luca Ceresoli , Thomas Petazzoni Subject: Re: [PATCH 2/2] drm: bridge: ti-sn65dsi83: Add error recovery mechanism Message-ID: <20241028090220.1fd803ff@bootlin.com> In-Reply-To: <78a09625-6bad-4fda-8ee5-92b8dd0de381@denx.de> References: <20241024095539.1637280-1-herve.codina@bootlin.com> <20241024095539.1637280-3-herve.codina@bootlin.com> <78a09625-6bad-4fda-8ee5-92b8dd0de381@denx.de> Organization: Bootlin X-Mailer: Claws Mail 4.3.0 (GTK 3.24.43; x86_64-redhat-linux-gnu) Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-GND-Sasl: herve.codina@bootlin.com Hi Marek, On Sat, 26 Oct 2024 00:53:51 +0200 Marek Vasut wrote: > On 10/24/24 11:55 AM, Herve Codina wrote: > > In some cases observed during ESD tests, the TI SN65DSI83 cannot recover > > from errors by itself. A full restart of the bridge is needed in those > > cases to have the bridge output LVDS signals again. > > I have seen the bridge being flaky sometimes, do you have any more > details of what is going on when this irrecoverable error occurs ? The panel attached to the bridge goes and stays black. That's the behavior. A full reset brings the panel back displaying frames. Best regards, Hervé