[media] adv7604/ad9389b/ths8200: decrease min_pixelclock to 25MHz

The CEA-861 standard allows for the 640x480 format at 25.175 MHz.
Ensure that that's allowed according to the struct v4l2_bt_timings_cap.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

drivers/media/i2c/ad9389b.c

@@ -631,7 +631,7 @@ static const struct v4l2_dv_timings_cap ad9389b_timings_cap = {
 	.bt = {
 		.max_width = 1920,
 		.max_height = 1200,
-		.min_pixelclock = 27000000,
+		.min_pixelclock = 25000000,
 		.max_pixelclock = 170000000,
 		.standards = V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT |
 			V4L2_DV_BT_STD_GTF | V4L2_DV_BT_STD_CVT,

drivers/media/i2c/adv7604.c

@@ -1162,7 +1162,7 @@ static int adv7604_dv_timings_cap(struct v4l2_subdev *sd,
 	cap->type = V4L2_DV_BT_656_1120;
 	cap->bt.max_width = 1920;
 	cap->bt.max_height = 1200;
-	cap->bt.min_pixelclock = 27000000;
+	cap->bt.min_pixelclock = 25000000;
 	if (DIGITAL_INPUT)
 		cap->bt.max_pixelclock = 225000000;
 	else

drivers/media/i2c/ths8200.c

@@ -49,7 +49,7 @@ static const struct v4l2_dv_timings_cap ths8200_timings_cap = {
 	.bt = {
 		.max_width = 1920,
 		.max_height = 1080,
-		.min_pixelclock = 27000000,
+		.min_pixelclock = 25000000,
 		.max_pixelclock = 148500000,
 		.standards = V4L2_DV_BT_STD_CEA861,
 		.capabilities = V4L2_DV_BT_CAP_PROGRESSIVE,