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 <p...@crapouillou.net>
---
drivers/gpu/drm/panel/panel-novatek-nt39016.c | 15 ++++++++++++++-
1 file changed, 14 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/panel/panel-novatek-nt39016.c
b/drivers/gpu/drm/panel/panel-novatek-nt39016.c
index f1286cf6528b..05cae8d62d56 100644
--- a/drivers/gpu/drm/panel/panel-novatek-nt39016.c
+++ b/drivers/gpu/drm/panel/panel-novatek-nt39016.c
@@ -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 = {
--
2.25.1
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