From: Gerald Loacker gerald.loacker@wolfvision.net
stable inclusion from stable-v6.6.33 commit 442b5ee91a5e9014918cdc920c50f0305b5abd03 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IAD6H2
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 0e5895ff7fab0fc05ec17daf9a568368828fa6ea ]
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-e4... Signed-off-by: Neil Armstrong neil.armstrong@linaro.org Link: https://patchwork.freedesktop.org/patch/msgid/20240409-bugfix-jt240mhqs_hwt_... Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Wang Hai wanghai38@huawei.com --- 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,