drm/panel: sitronix-st7789v: fix timing for jt240mhqs_hwt_ek_e3 panel

Flickering was observed when using partial mode. Moving the vsync to the
same position as used by the default sitronix-st7789v timing resolves this
issue.

Fixes: 0fbbe96bfa08 ("drm/panel: sitronix-st7789v: add jasonic jt240mhqs-hwt-ek-e3 support")
Acked-by: Jessica Zhang <quic_jesszhan@quicinc.com>
Signed-off-by: Gerald Loacker <gerald.loacker@wolfvision.net>
Link: https://lore.kernel.org/r/20240409-bugfix-jt240mhqs_hwt_ek_e3-timing-v2-1-e4821802443d@wolfvision.net
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240409-bugfix-jt240mhqs_hwt_ek_e3-timing-v2-1-e4821802443d@wolfvision.net

diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c
index 88e80fe98112daa0019ec43217a94178a5b0b1a7..32e5c03480381e93ec7d2f8626ca60e1b992e1e5 100644 (file)
--- a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c
+++ b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c
@@ -286,9 +286,9 @@ static const struct drm_display_mode jt240mhqs_hwt_ek_e3_mode = {
        .hsync_end = 240 + 28 + 10,
        .htotal = 240 + 28 + 10 + 10,
        .vdisplay = 280,
-       .vsync_start = 280 + 8,
-       .vsync_end = 280 + 8 + 4,
-       .vtotal = 280 + 8 + 4 + 4,
+       .vsync_start = 280 + 48,
+       .vsync_end = 280 + 48 + 4,
+       .vtotal = 280 + 48 + 4 + 4,
        .width_mm = 43,
        .height_mm = 37,
        .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,