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=1794591159; b=s5dHlC3UO5MMAxbWEbltPea70PXDGIvy0QXkbZ8bJXZNQbzukl6JuM8j+WSb+B/I9M2S brK/rg+L6QLHfKjK3a3g0UeERdVXPnLKm6xRY/U1FAzbH1ojnxYuEgJXcAa4CjG7lLuyB c6Buza9bfTWvYqKdvm+8baxu4aXqsF975oelBKaMFG4LBGi/78lvAOOg3Bkz7HcWSR3z/ KxUari66CdH8BnV1pbAcCkLXjVzc/2ezWORj0oWXKvroswWKqYzvojT0yIPgOLUAKo7ME 3CiaogL/w4zFe6aJsbSO74IBM83m2NqS63gITWZSEAMg6GhrEfszt2LZEv3cssQAM7Q== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794591159; 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=AexwS1lU08fXRBR7wxwfSZH+cas6VGoQVYPmdZKCgmQ=; b=xjGF7gG09iU02YFx6I1Cssy4k3E08O5E/UEug9X8Hpi6vYgxKO+I3a0QVFl+obb/Smxq 3i9wFWJQ7V/Wh+7rkKQ9GgdUutC5rvmStC3/3zX1gdzGOZrG0FLsjCkqkFQBYGrN9LJm1 G+xOdbrHCb7H21NH07naExjisQGZY7RsTh562qbKvzV8+ccBfmo5GTJjKVXYwn3nZbw6f 51jlLu3nBR/JyHayGg1cZEqL8tFhTCunxC2oNyS/k9XXgHPkS2jI1GwY2WdubuUOlpKKB gFX6V+fpEzTJwyCEBYMwZtRlHxtDRj2KsH4S7Z+HSxydON+viEOAfPcMq/l3/Lo1WPg== 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=QMMiIyF6; 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 C6152606BD2A; Fri, 13 Nov 2026 17:32:39 +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=QMMiIyF6 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 70BC01F000C9; Fri, 13 Nov 2026 17:32:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794591159; bh=AexwS1lU08fXRBR7wxwfSZH+cas6VGoQVYPmdZKCgmQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=QMMiIyF6F9AhcIUMFjhO7jWm6eHCFUgpREVC2+vGr09KqLYk7f+QZXBZbhp7HaA5m x1Jae+12Kfh7OqkkNcrhQ0yCYAdsA3MPK021bshRz+PTIM2zgSX9WWTFcl3see2TUZ JmxF3MahsVJSNxF/1wOzTKPSXr7x+eyCQ8gHt7DI= 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 6.12 303/670] drm/bridge: nwl-dsi: Limit LCDIF specific sync override Date: Fri, 13 Nov 2026 10:47:47 -0500 Message-ID: <20261113153822.189396450@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261113153811.177190860@linuxfoundation.org> References: <20261113153811.177190860@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 6.12-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 ffe738e93deb7..00622febf01c6 100644 --- a/drivers/gpu/drm/bridge/nwl-dsi.c +++ b/drivers/gpu/drm/bridge/nwl-dsi.c @@ -824,10 +824,13 @@ 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