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drm/panel: nt39016: Add support for 50 Hz refresh rate

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By changing the pixel clock and the length of the back porch, it is
possible to obtain a perfect 50 Hz refresh rate.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20200408095830.8131-2-paul@crapouillou.net
Acked-by: Sam Ravnborg <sam@ravnborg.org>
This commit is contained in:
Paul Cercueil 2020-04-08 11:58:30 +02:00
parent fa361758b1
commit 16b4511d83
No known key found for this signature in database
GPG Key ID: 73EE6BD2274ABD41
1 changed files with 14 additions and 1 deletions
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15
drivers/gpu/drm/panel/panel-novatek-nt39016.c
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@ -325,7 +325,7 @@ static int nt39016_remove(struct spi_device *spi)
}
static const struct drm_display_mode kd035g6_display_modes[] = {
{
{ /* 60 Hz */
.clock = 6000,
.hdisplay = 320,
.hsync_start = 320 + 10,
@ -338,6 +338,19 @@ static const struct drm_display_mode kd035g6_display_modes[] = {
.vrefresh = 60,
.flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
},
{ /* 50 Hz */
.clock = 5400,
.hdisplay = 320,
.hsync_start = 320 + 42,
.hsync_end = 320 + 42 + 50,
.htotal = 320 + 42 + 50 + 20,
.vdisplay = 240,
.vsync_start = 240 + 5,
.vsync_end = 240 + 5 + 1,
.vtotal = 240 + 5 + 1 + 4,
.vrefresh = 50,
.flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
},
};
static const struct nt39016_panel_info kd035g6_info = {