drm/vc4: vec: Fix timings for VEC modes

This commit fixes vertical timings of the VEC (composite output) modes
to accurately represent the 525-line ("NTSC") and 625-line ("PAL") ITU-R
standards.

Previous timings were actually defined as 502 and 601 lines, resulting
in non-standard 62.69 Hz and 52 Hz signals being generated,
respectively.

Signed-off-by: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20220728-rpi-analog-tv-properties-v2-28-459522d653a7@cerno.tech

diff --git a/drivers/gpu/drm/vc4/vc4_vec.c b/drivers/gpu/drm/vc4/vc4_vec.c
index 7eb1e34..0b33338 100644 (file)
--- a/drivers/gpu/drm/vc4/vc4_vec.c
+++ b/drivers/gpu/drm/vc4/vc4_vec.c
@@ -227,14 +227,14 @@ static const struct debugfs_reg32 vec_regs[] = {
 static const struct drm_display_mode ntsc_mode = {
        DRM_MODE("720x480", DRM_MODE_TYPE_DRIVER, 13500,
                 720, 720 + 14, 720 + 14 + 64, 720 + 14 + 64 + 60, 0,
-                480, 480 + 3, 480 + 3 + 3, 480 + 3 + 3 + 16, 0,
+                480, 480 + 7, 480 + 7 + 6, 525, 0,
                 DRM_MODE_FLAG_INTERLACE)
 };
 
 static const struct drm_display_mode pal_mode = {
        DRM_MODE("720x576", DRM_MODE_TYPE_DRIVER, 13500,
                 720, 720 + 20, 720 + 20 + 64, 720 + 20 + 64 + 60, 0,
-                576, 576 + 2, 576 + 2 + 3, 576 + 2 + 3 + 20, 0,
+                576, 576 + 4, 576 + 4 + 6, 625, 0,
                 DRM_MODE_FLAG_INTERLACE)
 };