linux-kernel - [PATCH] media: pci: mgb4: Fix DV capabilities

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Message-ID: <20251029122620.2079-1-tumic@gpxsee.org>
Date: Wed, 29 Oct 2025 13:26:20 +0100
From: tumic@...see.org
To: Mauro Carvalho Chehab <mchehab@...nel.org>,
	Hans Verkuil <hverkuil@...all.nl>
Cc: linux-media@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Martin Tůma <martin.tuma@...iteqautomotive.com>
Subject: [PATCH] media: pci: mgb4: Fix DV capabilities

From: Martin Tůma <martin.tuma@...iteqautomotive.com>

Use the same value (4096) for the maximum height as used for width. The HW
limits are a 4K video, but the orientation does not matter. Fixes issues with
some portrait oriented Audi displays that exceed the old height value (2160).

The same applies for the minimal width.

Signed-off-by: Martin Tůma <martin.tuma@...iteqautomotive.com>
---
 drivers/media/pci/mgb4/mgb4_vin.c  | 4 ++--
 drivers/media/pci/mgb4/mgb4_vout.c | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/media/pci/mgb4/mgb4_vin.c b/drivers/media/pci/mgb4/mgb4_vin.c
index 42c327bc50e1..4b38076486ff 100644
--- a/drivers/media/pci/mgb4/mgb4_vin.c
+++ b/drivers/media/pci/mgb4/mgb4_vin.c
@@ -64,10 +64,10 @@ static const struct mgb4_i2c_kv gmsl_i2c[] = {
 static const struct v4l2_dv_timings_cap video_timings_cap = {
 	.type = V4L2_DV_BT_656_1120,
 	.bt = {
-		.min_width = 320,
+		.min_width = 240,
 		.max_width = 4096,
 		.min_height = 240,
-		.max_height = 2160,
+		.max_height = 4096,
 		.min_pixelclock = 1843200, /* 320 x 240 x 24Hz */
 		.max_pixelclock = 530841600, /* 4096 x 2160 x 60Hz */
 		.standards = V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT |
diff --git a/drivers/media/pci/mgb4/mgb4_vout.c b/drivers/media/pci/mgb4/mgb4_vout.c
index c179c425e167..fd93fbbaf755 100644
--- a/drivers/media/pci/mgb4/mgb4_vout.c
+++ b/drivers/media/pci/mgb4/mgb4_vout.c
@@ -44,10 +44,10 @@ static const struct mgb4_i2c_kv fpdl3_i2c[] = {
 static const struct v4l2_dv_timings_cap video_timings_cap = {
 	.type = V4L2_DV_BT_656_1120,
 	.bt = {
-		.min_width = 320,
+		.min_width = 240,
 		.max_width = 4096,
 		.min_height = 240,
-		.max_height = 2160,
+		.max_height = 4096,
 		.min_pixelclock = 1843200, /* 320 x 240 x 24Hz */
 		.max_pixelclock = 530841600, /* 4096 x 2160 x 60Hz */
 		.standards = V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT |

base-commit: afb100a5ea7a13d7e6937dcd3b36b19dc6cc9328
-- 
2.51.0