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 A08BEC4167B for ; Wed, 8 Nov 2023 12:45:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344527AbjKHMpc (ORCPT ); Wed, 8 Nov 2023 07:45:32 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45468 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233967AbjKHMp3 (ORCPT ); Wed, 8 Nov 2023 07:45:29 -0500 Received: from mx1.tq-group.com (mx1.tq-group.com [93.104.207.81]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 600A81BF0 for ; Wed, 8 Nov 2023 04:45:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tq-group.com; i=@tq-group.com; q=dns/txt; s=key1; t=1699447526; x=1730983526; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=mp0cZhN3AA8YDI2rLb/AqW/Ftccy17dW1aTL8NsNu+0=; b=oRu+wqkgoNsI0LhGhYE6gkfx23YDjMoDeUlnLhOgGYO53c6GwaUJBc6Y Q7gwV5XwXCaUcQ9Z9wyhkAzuOLQAPvsfphQvQipnGCrbZ6BROJCFrE1h0 qY/q1zcLNv5akvSiXqUDqEub70dxUWBDdBnIxwMzhhrI8miR5Z0oLQHhC X0VXOgRxC8TPl2+7YR7A1G67Ib9mHpJZ9Z61JOTSfNUgFgQl40Bjuvy+i 0afb1gt4kD40mG9Uk1elL2jf5hOlaPpreAW+gC8NcTDYyPh14DAq99687 ciVk+2H/PqD9k667vWBjGaQzVbESNf1SrwftZmJW3LaPnthj2lE+JUdhB g==; X-IronPort-AV: E=Sophos;i="6.03,286,1694728800"; d="scan'208";a="33875585" Received: from vtuxmail01.tq-net.de ([10.115.0.20]) by mx1.tq-group.com with ESMTP; 08 Nov 2023 13:45:23 +0100 Received: from steina-w.localnet (steina-w.tq-net.de [10.123.53.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by vtuxmail01.tq-net.de (Postfix) with ESMTPSA id 69BB028007F; Wed, 8 Nov 2023 13:45:19 +0100 (CET) From: Alexander Stein To: Aradhya Bhatia , Jan Kiszka , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Sam Ravnborg , dri-devel@lists.freedesktop.org Cc: Tomi Valkeinen , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Tomi Valkeinen Subject: Re: [PATCH v2 0/2] drm/bridge: tc358767: Fix DRM_BRIDGE_ATTACH_NO_CONNECTOR case Date: Wed, 08 Nov 2023 13:45:20 +0100 Message-ID: <3537389.iIbC2pHGDl@steina-w> Organization: TQ-Systems GmbH In-Reply-To: <20231108-tc358767-v2-0-25c5f70a2159@ideasonboard.com> References: <20231108-tc358767-v2-0-25c5f70a2159@ideasonboard.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="iso-8859-1" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Tomi, Am Mittwoch, 8. November 2023, 12:27:21 CET schrieb Tomi Valkeinen: > These two patches are needed to make tc358767 work in the > DRM_BRIDGE_ATTACH_NO_CONNECTOR case, at least when using a DP connector. >=20 > I have tested this with TI AM654 EVM with a tc358767 add-on card > connected to a DP monitor. Just a question regarding the usage of this DSI-DP bridge. What is the state of the DSI lanes after the DSI host has been initialized,= =20 but before calling atomic_pre_enable? AFAIK this bridge requires LP-11 on D= SI=20 at any time for accessing the AUX channel. Best regards, Alexander > Signed-off-by: Tomi Valkeinen > --- > Changes in v2: > - Update the format negotiation patch as discussed in > https://lore.kernel.org/all/7ddf0edb-2925-4b7c-ad07-27c030dd0232@ti.com/ - > Link to v1: > https://lore.kernel.org/r/20231031-tc358767-v1-0-392081ad9f4b@ideasonboar= d. > com >=20 > --- > Aradhya Bhatia (1): > drm/bridge: tc358767: Add format negotiation hooks for DPI/DSI to > (e)DP >=20 > Tomi Valkeinen (1): > drm/bridge: tc358767: Fix link properties discovery >=20 > drivers/gpu/drm/bridge/tc358767.c | 32 ++++++++++++++++++++++++++++++++ > 1 file changed, 32 insertions(+) > --- > base-commit: 9d7c8c066916f231ca0ed4e4fce6c4b58ca3e451 > change-id: 20231031-tc358767-58e3ebdf95f0 >=20 > Best regards, =2D-=20 TQ-Systems GmbH | M=FChlstra=DFe 2, Gut Delling | 82229 Seefeld, Germany Amtsgericht M=FCnchen, HRB 105018 Gesch=E4ftsf=FChrer: Detlef Schneider, R=FCdiger Stahl, Stefan Schneider http://www.tq-group.com/