From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 276E24A8A03; Tue, 1 Sep 2026 18:51:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.251.105.195 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788288687; cv=none; b=u6gbmsmaS7/rA3NUsQrT51ZFF4jcQN3pWBauh7yM+GgHY9gHCAvatvU2L+/fkuZ6JlZ/OiBykcKxfOKKlscwDFMkpBx7r5hwh8yp7NVZGmMnObUVCfIVRwBrEDAOS58ZnOQfzmScb9I455RLR538i7qa5F8GoyCe9OqN4KbM7MI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788288687; c=relaxed/simple; bh=YQBgk0tCInjN78ZsmtnC8gQAxWhSMvfMlnsIg4WQmiU=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=MwFNP57NadXsrl6DJjPnahMjYKLFGdxhi0rTOHXAPv/CzhYtsoJo2J6qUhjlp7W3sb/Od2tZVKI3yMvFS8s+xdAWAmSdirL+Qc2jz/1fNJMQJX7YAoIGbtB4rCztyLilfUTttd+KOIBEimIjyHHJzipe1skZ0QhQWTd07D+s8o0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=U8xjbdh3; arc=none smtp.client-ip=148.251.105.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="U8xjbdh3" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1788288681; bh=YQBgk0tCInjN78ZsmtnC8gQAxWhSMvfMlnsIg4WQmiU=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=U8xjbdh3G5kTDYHASjfYejz3nCp1ujP8CPZTrlxtIs9nj7IrI6f8i39K/Nrg6GNQe s4Yc5OoPpAQRlqQ7fXYFL5JQzJZ5lsTKfHhNxExG1ZtiazUC4btBC1LzI7fx/ZJKlR MGcaWV+OLiuU26ETBoP/BVJmR4nYa/xMPCEcuJXh7lL3ekYWn15R4DqQSFtN22sYYG CUHCk9Cll8ZHrwiki3RaHokeXVCLFq+WLC9naV2hpAusXc07wM+UXN3bnGyn3h7V1k +Frukvk8PWmTqdrUnBHu8cg/VIn80WzkD6c/knXnrtkNyCWMToy3hZJROMtywk1x3J tyYvX2lE5Dpow== Received: from localhost (unknown [100.64.0.241]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange secp256r1 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: cristicc) by bali.collaboradmins.com (Postfix) with ESMTPSA id 8D5C217E3C81; Tue, 01 Sep 2026 20:51:21 +0200 (CEST) From: Cristian Ciocaltea Date: Tue, 01 Sep 2026 21:51:19 +0300 Subject: [PATCH v11 55/74] drm/bridge: lontium-lt9611: Advertise HDMI 1.4 capabilities Precedence: bulk X-Mailing-List: linux-fbdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260901-dw-hdmi-qp-scramb-v11-55-bc12954a0688@collabora.com> References: <20260901-dw-hdmi-qp-scramb-v11-0-bc12954a0688@collabora.com> In-Reply-To: <20260901-dw-hdmi-qp-scramb-v11-0-bc12954a0688@collabora.com> To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Dave Stevenson , Dmitry Baryshkov , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Luca Ceresoli , Chen-Yu Tsai , Samuel Holland , =?utf-8?q?Ma=C3=ADra_Canal?= , Raspberry Pi Kernel Maintenance , Raphael Gallais-Pou , Sandy Huang , =?utf-8?q?Heiko_St=C3=BCbner?= , Andy Yan , Algea Cao , Daniel Stone , Liu Ying , Phong LE , Helge Deller Cc: kernel@collabora.com, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-rockchip@lists.infradead.org, linux-fbdev@vger.kernel.org X-Mailer: b4 0.15.2 Bridges using DRM_BRIDGE_OP_HDMI are expected to provide the supported HDMI version. This is not enforced yet, but will become mandatory once the migration to the caps-based HDMI connector initialization API is complete. As LT9611 supposedly cannot drive a TMDS character rate exceeding 297 MHz, advertise HDMI 1.4 as the supported version. HDMI 1.4 allows up to 340 MHz, so set the bridge's max_tmds_char_rate to ensure the connector limit derived from supported_hdmi_ver remains within the hardware capabilities. drm_bridge_connector_atomic_check() calls drm_atomic_helper_connector_hdmi_check(), which rejects modes whose computed TMDS character rate exceeds the connector's max_tmds_char_rate before invoking the driver's .tmds_char_rate_valid hook. Since max_tmds_char_rate now carries the existing effective limit, lt9611_hdmi_tmds_char_rate_valid() is redundant. Drop it. Signed-off-by: Cristian Ciocaltea --- drivers/gpu/drm/bridge/lontium-lt9611.c | 16 +++------------- 1 file changed, 3 insertions(+), 13 deletions(-) diff --git a/drivers/gpu/drm/bridge/lontium-lt9611.c b/drivers/gpu/drm/bridge/lontium-lt9611.c index 3ebd8992cd94..53444bc8326f 100644 --- a/drivers/gpu/drm/bridge/lontium-lt9611.c +++ b/drivers/gpu/drm/bridge/lontium-lt9611.c @@ -5,6 +5,7 @@ */ #include +#include #include #include #include @@ -952,18 +953,6 @@ static int lt9611_hdmi_write_hdmi_infoframe(struct drm_bridge *bridge, return 0; } -static enum drm_mode_status -lt9611_hdmi_tmds_char_rate_valid(const struct drm_bridge *bridge, - const struct drm_display_mode *mode, - unsigned long long tmds_rate) -{ - /* 297 MHz for 4k@30 mode */ - if (tmds_rate > 297000000) - return MODE_CLOCK_HIGH; - - return MODE_OK; -} - static int lt9611_hdmi_audio_startup(struct drm_bridge *bridge, struct drm_connector *connector) { @@ -1029,7 +1018,6 @@ static const struct drm_bridge_funcs lt9611_bridge_funcs = { .atomic_create_state = drm_atomic_helper_bridge_create_state, .atomic_get_input_bus_fmts = lt9611_atomic_get_input_bus_fmts, - .hdmi_tmds_char_rate_valid = lt9611_hdmi_tmds_char_rate_valid, .hdmi_write_audio_infoframe = lt9611_hdmi_write_audio_infoframe, .hdmi_clear_audio_infoframe = lt9611_hdmi_clear_audio_infoframe, .hdmi_write_avi_infoframe = lt9611_hdmi_write_avi_infoframe, @@ -1175,6 +1163,8 @@ static int lt9611_probe(struct i2c_client *client) lt9611->bridge.hdmi_audio_dev = dev; lt9611->bridge.hdmi_audio_max_i2s_playback_channels = 8; lt9611->bridge.hdmi_audio_dai_port = 2; + lt9611->bridge.supported_hdmi_ver = HDMI_VERSION_1_4; + lt9611->bridge.max_tmds_char_rate = 297000000; /* 297 MHz for 4k@30 mode */ drm_bridge_add(<9611->bridge); -- 2.55.0