[PATCH] drm/mgag200: Increase bandwidth for G200se A rev1

[Jocelyn Falempe]

A G200SE_A rev 1 user reported that prior to v6.0, he was able to get Xorg
working at 1440x900 at 60Hz. This somehow bypassed the bandwidth test in the
driver. After v6.0, and the driver refactor, it's no longer possible.
So increase the bandwidth, as the hardware is able to do it.

In mgag200_calculate_mode_bandwidth(), the bandwidth for 1440x900 at 60 is
30318019, while 24400 * 1024 = 24985600 and 30100 * 1024 = 30822400.
Raising the bandwidth from 24400 to 30100 is enough to allow this mode.

Reported-by: Roger Sewell <roger.sewell at cantab.net>
Tested-by: Roger Sewell <roger.sewell at cantab.net>
Signed-off-by: Jocelyn Falempe <jfalempe at redhat.com>
---
 drivers/gpu/drm/mgag200/mgag200_g200se.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/mgag200/mgag200_g200se.c b/drivers/gpu/drm/mgag200/mgag200_g200se.c
index bd6e573c9a1a..3b49e30931e1 100644
--- a/drivers/gpu/drm/mgag200/mgag200_g200se.c
+++ b/drivers/gpu/drm/mgag200/mgag200_g200se.c
@@ -437,7 +437,7 @@ static int mgag200_g200se_pipeline_init(struct mga_device *mdev)
  */
 
 static const struct mgag200_device_info mgag200_g200se_a_01_device_info =
-	MGAG200_DEVICE_INFO_INIT(1600, 1200, 24400, false, 0, 1, true);
+	MGAG200_DEVICE_INFO_INIT(1600, 1200, 30100, false, 0, 1, true);
 
 static const struct mgag200_device_info mgag200_g200se_a_02_device_info =
 	MGAG200_DEVICE_INFO_INIT(1920, 1200, 30100, false, 0, 1, true);

base-commit: c2268daa65fb415cfd463016ad54c20afef8f75e
-- 
2.41.0