From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794590371; b=VYEFafK97gptJyhaKaRa4tpHF+b2Vq98vFnoof5dnVnWJsveM8bn9qo1C2h24GEJvDqN mESZ43iU04MGrLq9dLldxP5ze3N+cbBTfhhSXlLaRVTOjHOOoqUOmfthsQZlbp/2IMNeM LUzsNi1dFtyuOyHwRlOa9j0vZKz840HN9gDHmO1bEc+FJtfI4gbpzkhgzYB4fsm240LQ2 3Oq4q40Yzc9EP310FzWPA9vUsoWiCVj8zpBpcVOO9CgIGKQnLUlTL+7VF3xA4/IVqlCeP oglsjw6HGbfLLiBbr3CjweEM6SuAXe+W4sQHlINrFTz1kQPx+uhT7gWoKp1meNbHXzg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794590371; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=Jdv/+6Ee4m+5rFnGUG+l2ishKamekGWvQuAClXD5PPA=; b=mRtVBZvPVkSpHfAjPt52NAInTHo3adqvQooLZwZjhjRikOydXNLPNz+lu/1yiuWRA/wt LCfUjGtua5pv6uu61CGe9l/RK/xz+MGOuWqAX1Jd1zWxetgV05Cg0iFYwiVBR8aCGLyeW 3Vvl4P9qN3WIpi216a6tq397pm1bH1hbhGgPidoPh+Op522hNKapAFcI4G+UprJf9BwxR Gh2qB8RRgOTu1hl7BKR8ofolWvRgDSX+WroEVtxOQ+0jaHe8cgpdY/s/tzE63dEJz+o7w jsLNgGCwTs9jnIZso0gILeoZNM1iIHRU6+6U0EL8n7lrUDE7lC8FidlT2qPR8DaDz8Q== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=S2vqhxyS; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 12ECF606B340; Fri, 13 Nov 2026 17:19:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=S2vqhxyS Received: by smtp.kernel.org (Postfix) with ESMTPSA id A34BE1F000C7; Fri, 13 Nov 2026 17:19:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794590370; bh=Jdv/+6Ee4m+5rFnGUG+l2ishKamekGWvQuAClXD5PPA=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=S2vqhxySY2Hz3KGZjy0M0svgPNTz64Qy2eOLlYmeLi01nZLZNGbHQXof5EZIL3Pq9 dS3UQyXJ5YeK2m/ZzOKgdo/wvJC4K4Qqu4qsDKUkAMn4OxrBcXy448lsMvo8XlALeM tAZTXNc5mhhS/5Nwnnj13DLd9Aen3VTOiJTL693M= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Luca Ceresoli , Esben Haabendal , Sasha Levin Subject: [PATCH 6.18 344/686] drm/bridge: nwl-dsi: Limit LCDIF specific sync override Date: Fri, 13 Nov 2026 10:47:57 -0500 Message-ID: <20261113153832.587947008@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261113153820.902362109@linuxfoundation.org> References: <20261113153820.902362109@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: patches@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Esben Haabendal [ Upstream commit 54a88d9afcca66221d14f438d0960472984968ec ] When using DCSS with NWL, overriding the mode flags to enforce active high sync is preventing the use of active low with downstream bridges, such as ti-sn65dsi83, which will not see such mode flags set by the panel. Fixes: 44cfc6233447 ("drm/bridge: Add NWL MIPI DSI host controller support") Cc: stable@vger.kernel.org Reviewed-by: Luca Ceresoli Signed-off-by: Esben Haabendal Link: https://patch.msgid.link/20261027-nwl-dsi-fixes-v5-2-b6d1d3d2d356@geanix.com Signed-off-by: Luca Ceresoli Signed-off-by: Sasha Levin --- drivers/gpu/drm/bridge/nwl-dsi.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/bridge/nwl-dsi.c b/drivers/gpu/drm/bridge/nwl-dsi.c index 29f175c0d118c..38bc83e7af475 100644 --- a/drivers/gpu/drm/bridge/nwl-dsi.c +++ b/drivers/gpu/drm/bridge/nwl-dsi.c @@ -823,10 +823,13 @@ static int nwl_dsi_bridge_atomic_check(struct drm_bridge *bridge, struct drm_connector_state *conn_state) { struct drm_display_mode *adjusted_mode = &crtc_state->adjusted_mode; + struct nwl_dsi *dsi = bridge_to_dsi(bridge); /* At least LCDIF + NWL needs active high sync */ - adjusted_mode->flags |= (DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC); - adjusted_mode->flags &= ~(DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC); + if (dsi->endpoint == NWL_DSI_ENDPOINT_LCDIF) { + adjusted_mode->flags |= (DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC); + adjusted_mode->flags &= ~(DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC); + } /* * Do a full modeset if crtc_state->active is changed to be true. -- 2.53.0