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=1794585656; b=CwSHOFjy/MUQgiVVnH9fRGzJr36StBqj6ikqHjP1aCIQ4U5m6JPhqzSTU2x51cFa7FpF AcLkzwGYC2PbazVng2LzwtuK1t+faqHC3ccBkZLzlb69XVRb1XrQfyYzqHGzrDynIZoRH jyHc++H5bWgbe9TgxOO3JX5wWFUauBOG0Yz5j/bIDBfUAfeTRJNxIgq5KuJemvag6m/gD kvq4F16I3lyEtlRTQ+JIXDpveqVeYnsBsNaWWc8yKr4jDI4PkjOTW9YVFUg0J1w5RB6jr WPFJTw3gGqAtIM/oJ27EHXntPFnyyUeULMGsRQXXNOBv6gzXHMZt+aLpojfh7/fONQg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794585656; 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=y+trSZzJEAFBxGvnNX7EerhuCj9X+Q1zXDC3HFBDZ3M=; b=HvIqw5Chz5Uu0ZUt7gdL7oOUk8DgTj4U7p9u2GHI/dxGLVgHAQUjiCZruBhMwxMzij03 tvfKxTYO+FFBfthLONnVw/O47xTD7AuKFDFPWT2ubKPbvwygBPHWbGfWWELXbPNdxFPxW HFxXSVzKDfM3PynSjlAdwk382vQtjRciKMVhE7tOqkiS9Uguvx7tT9/2gJl1P5jwY3xHO V4gtmGmRuvxy061krLzjpXN//Fshj2rJXICWSgm1ZDj7wilTdvPRTVhsi9Ndss+6CvbYI gdsYYaiR4qxbcCN3iE/y8AtXCpg1bNEio169s61Lh9jjAQW+emy5lAzoxHP4X2YzUoQ== 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=hZNZIqMa; 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 CF14E606B2EB; Fri, 13 Nov 2026 16:00:56 +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=hZNZIqMa Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7B2E41F000C4; Fri, 13 Nov 2026 16:00:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794585656; bh=y+trSZzJEAFBxGvnNX7EerhuCj9X+Q1zXDC3HFBDZ3M=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=hZNZIqMaRENVBmIsuT7OXCvCWFVW7SNSNi18LjRQWtDlIx0RTIDGizrTx/uABw7gg NYq93dLm06pmSmfmO2J07kUP/c0S1yuR2mB2OoGAy0GMl9Cu9nl0+SzqxLdcLs9boa vE0ojuhqH4v3OFWSv+xu+//6/rUrQ6R53V6CFD0o= 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 7.3 270/507] drm/bridge: nwl-dsi: Limit LCDIF specific sync override Date: Fri, 13 Nov 2026 10:49:34 -0500 Message-ID: <20261113153803.797938345@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261113153753.358973689@linuxfoundation.org> References: <20261113153753.358973689@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.3-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 80e26a947ae69..1aab46e1a1687 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