On Thu, Apr 02, 2015 at 06:54:34PM +0800, liu,lei wrote:
> From: "liu,lei" <lei.a.liu@xxxxxxxxx>
>
> According DMT spec, vss of this mode should be 1393, vse should
> be 1396.
>
> VESA MONITOR TIMING STANDARD:
>
> Timing Name = 1856 x 1392 @ 75Hz
> Hor Total Time = 8.889; (usec) = 320 chars = 2560 Pixels
> Hor Sync Start = 6.889; (usec) = 248 chars = 1984 Pixels
> H Back Porch = 1.222; (usec) = 44 chars = 352 Pixels
>
> Ver Total Time = 13.333; (msec) = 1500 lines HT – (1.06xHA)
> Ver Sync Start = 12.382; (msec) = 1393 lines
> V Back Porch = 0.924; (msec) = 104 lines
> ---
> drivers/gpu/drm/drm_edid.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
> index 53bc7a6..16991ea 100644
> --- a/drivers/gpu/drm/drm_edid.c
> +++ b/drivers/gpu/drm/drm_edid.c
> @@ -409,7 +409,7 @@ static const struct drm_display_mode drm_dmt_modes[] = {
> DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
> /* 1856x1392@75Hz */
> { DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 288000, 1856, 1984,
> - 2208, 2560, 0, 1392, 1395, 1399, 1500, 0,
> + 2208, 2560, 0, 1392, 1393, 1396, 1500, 0,
That is indeed what the spec says. However to review this I wrote a
quick awk script to parse the spec, and that shows a few more
differences. I'll toss out a patch with the results of my script...
> DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
> /* 1856x1392@120Hz RB */
> { DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 356500, 1856, 1904,
> --
> 1.8.3.1
>
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--
Ville Syrjälä
Intel OTC
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