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Message-Id: <20240409-bugfix-jt240mhqs_hwt_ek_e3-timing-v1-1-f8351d4a8d4b@wolfvision.net>
Date: Tue, 28 May 2024 10:32:54 +0200
From: Gerald Loacker <gerald.loacker@...fvision.net>
To: Neil Armstrong <neil.armstrong@...aro.org>,
Jessica Zhang <quic_jesszhan@...cinc.com>, Sam Ravnborg <sam@...nborg.org>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
Gerald Loacker <gerald.loacker@...fvision.net>
Subject: [PATCH RESEND 1/3] 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.
Signed-off-by: Gerald Loacker <gerald.loacker@...fvision.net>
---
drivers/gpu/drm/panel/panel-sitronix-st7789v.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c
index 88e80fe98112..32e5c0348038 100644
--- 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,
--
2.37.2
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