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

[Zhengqiao Xia]

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.

Signed-off-by: Zhengqiao Xia <xiazhengq...@huaqin.corp-partner.google.com>
---
 drivers/gpu/drm/panel/panel-edp.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/panel/panel-edp.c 
b/drivers/gpu/drm/panel/panel-edp.c
index d58f90bc48fb..745f3e48f02a 100644
--- 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"),
-- 
2.17.1