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Subject[PATCH v1 19/35] drm/vc4: vec: Fix timings for VEC modes
Date
From: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>

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>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>

diff --git a/drivers/gpu/drm/vc4/vc4_vec.c b/drivers/gpu/drm/vc4/vc4_vec.c
index a9fefd92f0f1..8f30a530b2d5 100644
--- 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)
};

--
b4 0.10.0-dev-49460

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