drm/panel-edp: Add prepare_to_enable to 200ms for MNC207QS1-1

For MNC207QS1-1 panel, Splash screen occur when switch from VT1 to VT2.
The BL_EN signal does not conform to the VESA protocol.
BL_EN signal needs to be pulled high after video signal.
So add prepare_to_enable to 200ms.

[ dianders: Adjusted subject prefix and added Fixes tag ]

Fixes: 0547692ac146 ("drm/panel-edp: Add several generic edp panels")
Signed-off-by: Zhengqiao Xia <xiazhengqiao@huaqin.corp-partner.google.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240301084006.14422-1-xiazhengqiao@huaqin.corp-partner.google.com

diff --git a/drivers/gpu/drm/panel/panel-edp.c b/drivers/gpu/drm/panel/panel-edp.c
index d58f90bc48fba07bec953c54c130fa90c17e2171..745f3e48f02ac74fd36903367770371cc7307692 100644 (file)
--- a/drivers/gpu/drm/panel/panel-edp.c
+++ b/drivers/gpu/drm/panel/panel-edp.c
@@ -1865,6 +1865,13 @@ static const struct panel_delay delay_200_500_e50 = {
        .enable = 50,
 };
 
+static const struct panel_delay delay_200_500_e50_p2e200 = {
+       .hpd_absent = 200,
+       .unprepare = 500,
+       .enable = 50,
+       .prepare_to_enable = 200,
+};
+
 static const struct panel_delay delay_200_500_e80 = {
        .hpd_absent = 200,
        .unprepare = 500,
@@ -2034,7 +2041,7 @@ static const struct edp_panel_entry edp_panels[] = {
        EDP_PANEL_ENTRY('C', 'M', 'N', 0x14d6, &delay_200_500_e80_d50, "N140BGA-EA4"),
        EDP_PANEL_ENTRY('C', 'M', 'N', 0x14e5, &delay_200_500_e80_d50, "N140HGA-EA1"),
 
-       EDP_PANEL_ENTRY('C', 'S', 'O', 0x1200, &delay_200_500_e50, "MNC207QS1-1"),
+       EDP_PANEL_ENTRY('C', 'S', 'O', 0x1200, &delay_200_500_e50_p2e200, "MNC207QS1-1"),
 
        EDP_PANEL_ENTRY('H', 'K', 'C', 0x2d51, &delay_200_500_e200, "Unknown"),
        EDP_PANEL_ENTRY('H', 'K', 'C', 0x2d5b, &delay_200_500_e200, "Unknown"),