6.9-stable review patch. If anyone has any objections, please let me know.
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From: Zhengqiao Xia xiazhengqiao@huaqin.corp-partner.google.com
[ Upstream commit e635b7eb7062b464bbd9795308b1a80eac0b01f5 ]
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-xiazhen... Signed-off-by: Sasha Levin sashal@kernel.org --- 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 d58f90bc48fba..745f3e48f02ac 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"),