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Message-Id: <20250723072513.2880369-1-yelangyan@huaqin.corp-partner.google.com>
Date: Wed, 23 Jul 2025 15:25:13 +0800
From: Langyan Ye <yelangyan@...qin.corp-partner.google.com>
To: dianders@...omium.org,
neil.armstrong@...aro.org,
jessica.zhang@....qualcomm.com,
maarten.lankhorst@...ux.intel.com,
mripard@...nel.org,
tzimmermann@...e.de,
airlied@...il.com,
simona@...ll.ch
Cc: dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org,
Langyan Ye <yelangyan@...qin.corp-partner.google.com>
Subject: [PATCH v2] drm/panel-edp: Add 50ms disable delay for four panels
Add 50ms disable delay for NV116WHM-N49, NV122WUM-N41, and MNC207QS1-1
to satisfy T9+T10 timing. Add 50ms disable delay for MNE007JA1-2
as well, since MNE007JA1-2 copies the timing of MNC207QS1-1.
Specifically, it should be noted that the MNE007JA1-2 panel was added
by someone who did not have the panel documentation, so they simply
copied the timing from the MNC207QS1-1 panel. Adding an extra 50 ms
of delay should be safe.
Fixes: 0547692ac146 ("drm/panel-edp: Add several generic edp panels")
Fixes: 50625eab3972 ("drm/edp-panel: Add panel used by T14s Gen6 Snapdragon")
Signed-off-by: Langyan Ye <yelangyan@...qin.corp-partner.google.com>
---
v2:
- Deleted "delay_200_500_e50_d50_p2e200" structure and renamed/replaced "delay_200_500_e50_p2e200"
- Link to v1: https://lore.kernel.org/all/20250722024512.983313-1-yelangyan@huaqin.corp-partner.google.com/
---
---
drivers/gpu/drm/panel/panel-edp.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/panel/panel-edp.c b/drivers/gpu/drm/panel/panel-edp.c
index 09170470b3ef..d0aa602ecc9d 100644
--- a/drivers/gpu/drm/panel/panel-edp.c
+++ b/drivers/gpu/drm/panel/panel-edp.c
@@ -1736,10 +1736,11 @@ static const struct panel_delay delay_200_500_e50 = {
.enable = 50,
};
-static const struct panel_delay delay_200_500_e50_p2e200 = {
+static const struct panel_delay delay_200_500_e50_d50_p2e200 = {
.hpd_absent = 200,
.unprepare = 500,
.enable = 50,
+ .disable = 50,
.prepare_to_enable = 200,
};
@@ -1941,13 +1942,13 @@ static const struct edp_panel_entry edp_panels[] = {
EDP_PANEL_ENTRY('B', 'O', 'E', 0x09dd, &delay_200_500_e50, "NT116WHM-N21"),
EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a1b, &delay_200_500_e50, "NV133WUM-N63"),
EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a36, &delay_200_500_e200, "Unknown"),
- EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a3e, &delay_200_500_e80, "NV116WHM-N49"),
+ EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a3e, &delay_200_500_e80_d50, "NV116WHM-N49"),
EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a5d, &delay_200_500_e50, "NV116WHM-N45"),
EDP_PANEL_ENTRY('B', 'O', 'E', 0x0ac5, &delay_200_500_e50, "NV116WHM-N4C"),
EDP_PANEL_ENTRY('B', 'O', 'E', 0x0ae8, &delay_200_500_e50_p2e80, "NV140WUM-N41"),
EDP_PANEL_ENTRY('B', 'O', 'E', 0x0b09, &delay_200_500_e50_po2e200, "NV140FHM-NZ"),
EDP_PANEL_ENTRY('B', 'O', 'E', 0x0b1e, &delay_200_500_e80, "NE140QDM-N6A"),
- EDP_PANEL_ENTRY('B', 'O', 'E', 0x0b34, &delay_200_500_e80, "NV122WUM-N41"),
+ EDP_PANEL_ENTRY('B', 'O', 'E', 0x0b34, &delay_200_500_e80_d50, "NV122WUM-N41"),
EDP_PANEL_ENTRY('B', 'O', 'E', 0x0b43, &delay_200_500_e200, "NV140FHM-T09"),
EDP_PANEL_ENTRY('B', 'O', 'E', 0x0b56, &delay_200_500_e80, "NT140FHM-N47"),
EDP_PANEL_ENTRY('B', 'O', 'E', 0x0b66, &delay_200_500_e80, "NE140WUM-N6G"),
@@ -1986,8 +1987,8 @@ static const struct edp_panel_entry edp_panels[] = {
EDP_PANEL_ENTRY('C', 'M', 'N', 0x14e5, &delay_200_500_e80_d50, "N140HGA-EA1"),
EDP_PANEL_ENTRY('C', 'M', 'N', 0x162b, &delay_200_500_e80_d50, "N160JCE-ELL"),
- EDP_PANEL_ENTRY('C', 'S', 'O', 0x1200, &delay_200_500_e50_p2e200, "MNC207QS1-1"),
- EDP_PANEL_ENTRY('C', 'S', 'O', 0x1413, &delay_200_500_e50_p2e200, "MNE007JA1-2"),
+ EDP_PANEL_ENTRY('C', 'S', 'O', 0x1200, &delay_200_500_e50_d50_p2e200, "MNC207QS1-1"),
+ EDP_PANEL_ENTRY('C', 'S', 'O', 0x1413, &delay_200_500_e50_d50_p2e200, "MNE007JA1-2"),
EDP_PANEL_ENTRY('C', 'S', 'W', 0x1100, &delay_200_500_e80_d50, "MNB601LS1-1"),
EDP_PANEL_ENTRY('C', 'S', 'W', 0x1103, &delay_200_500_e80_d50, "MNB601LS1-3"),
--
2.34.1
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