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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 B909BFF8867 for ; Wed, 29 Apr 2026 13:42:21 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2CD0410F01F; Wed, 29 Apr 2026 13:42:21 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=dolcini.it header.i=@dolcini.it header.b="WLNb6D/4"; dkim-atps=neutral X-Greylist: delayed 518 seconds by postgrey-1.36 at gabe; Wed, 29 Apr 2026 13:42:18 UTC Received: from mail11.truemail.it (mail11.truemail.it [217.194.8.81]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9624010F01E for ; Wed, 29 Apr 2026 13:42:18 +0000 (UTC) Received: from francesco-nb (93-49-2-63.ip317.fastwebnet.it [93.49.2.63]) by mail11.truemail.it (Postfix) with ESMTPA id 3AF081FB70; Wed, 29 Apr 2026 15:33:37 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=dolcini.it; s=default; t=1777469617; bh=ZFHuOmltmFo8Rwni2y+lGo+CzUf7wYN17q7s/CcnxnM=; h=From:To:Subject; b=WLNb6D/4K8Sp57Kr3Ua0gfYVJN1Kb0QT3PRUh9sMP/h3wEvTvU/K5bTaHSPLp+Ngn bFFaYSWWz9C2TOsYHCvo9QyyWTgw4Tusv8iphsoxeBD6MvItiCVldUlFpRFAkz4lJ7 3Vqs5yHtvsYLvcF00GKaSETZHlw2JS+xpNmp9uPt/N6XUBOd1nU70/Zxi0v4sgSZuz QMcyRYk/NHy8Hk7BbltkYcZXIwDz1IhfjXhGzVJdhk1NAB32U2QFHNELk3ognz51dh h79REnjTpwkSxPorFNaDVeKGA5iRkgZ7Q7iL2ce+3FbOcDC9wSN12BwDHRp695DIGI sDdqgV0+Ow3mg== Date: Wed, 29 Apr 2026 15:33:33 +0200 From: Francesco Dolcini To: max.oss.09@gmail.com, Dmitry Baryshkov , Luca Ceresoli , Thomas Zimmermann , Neil Armstrong Cc: Adrien Grassein , Andrzej Hajda , David Airlie , Jernej Skrabec , Jonas Karlman , Laurent Pinchart , Maarten Lankhorst , Maxime Ripard , Robert Foss , Simona Vetter , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] drm/bridge: lontium-lt8912b: Do not generate HFP Message-ID: <20260429133333.GA68737@francesco-nb> References: <20250728150059.2642055-1-max.oss.09@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250728150059.2642055-1-max.oss.09@gmail.com> X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" +Dmitry, Luca Hello all, how to get this patch considered and eventually merged? I see that this is not moving since long. Considering that Adrien Grassein is not visible on the mailing list since 2022, and that I have various HW available that is using this combination (on TI Sitara and Jacinto, on a DPI-DSI tc358768 bridge, and NXP i.MX), I have access to the (little) documentation that is available from Lontium I can propose myself as a maintainer here. I assume being able to ack patches would help the maintenance here, or is this just a glitch and a ping was enough? Dmitry, Luca: looking at the recent commits you are the one who merged the most patches on drivers/gpu/drm/bridge lately, what's you advise? Francesco On Mon, Jul 28, 2025 at 05:00:50PM +0200, max.oss.09@gmail.com wrote: > From: Max Krummenacher > > The datasheet of lontium-lt8912b doesn't require blanking during > the HFP period. Thus use LP during HFP. > > Tested with a samsung-dsim (i.MX8 MM) and a tc358768 DPI to DSI bridge > as the DSI host. > > Signed-off-by: Max Krummenacher > > --- > > drivers/gpu/drm/bridge/lontium-lt8912b.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/gpu/drm/bridge/lontium-lt8912b.c b/drivers/gpu/drm/bridge/lontium-lt8912b.c > index 3e49d855b364..760d89493276 100644 > --- a/drivers/gpu/drm/bridge/lontium-lt8912b.c > +++ b/drivers/gpu/drm/bridge/lontium-lt8912b.c > @@ -494,6 +494,7 @@ static int lt8912_attach_dsi(struct lt8912 *lt) > > dsi->mode_flags = MIPI_DSI_MODE_VIDEO | > MIPI_DSI_MODE_LPM | > + MIPI_DSI_MODE_VIDEO_NO_HFP | > MIPI_DSI_MODE_NO_EOT_PACKET; > > ret = devm_mipi_dsi_attach(dev, dsi); > -- > 2.42.0 >