linux-stable.git/drivers/gpu/drm/panel, branch linux-5.15.y

drm/panel-simple: fix connector type for DataImage SCF0700C48GGU18 panel

2026-02-06T15:41:49+00:00

commit 6ab3d4353bf75005eaa375677c9fed31148154d6 upstream.

The connector type for the DataImage SCF0700C48GGU18 panel is missing and
devm_drm_panel_bridge_add() requires connector type to be set. This leads
to a warning and a backtrace in the kernel log and panel does not work:
"
WARNING: CPU: 3 PID: 38 at drivers/gpu/drm/bridge/panel.c:379 devm_drm_of_get_bridge+0xac/0xb8
"
The warning is triggered by a check for valid connector type in
devm_drm_panel_bridge_add(). If there is no valid connector type
set for a panel, the warning is printed and panel is not added.
Fill in the missing connector type to fix the warning and make
the panel operational once again.

Cc: stable@vger.kernel.org
Fixes: 97ceb1fb08b6 ("drm/panel: simple: Add support for DataImage SCF0700C48GGU18")
Signed-off-by: Marek Vasut 
Reviewed-by: Neil Armstrong 
Signed-off-by: Neil Armstrong 
Link: https://patch.msgid.link/20260110152750.73848-1-marex@nabladev.com
Signed-off-by: Greg Kroah-Hartman

drm/panel: visionox-rm69299: Don't clear all mode flags

2026-01-19T12:09:22+00:00

[ Upstream commit 39144b611e9cd4f5814f4098c891b545dd70c536 ]

Don't clear all mode flags. We only want to maek sure we use HS mode
during unprepare.

Fixes: c7f66d32dd431 ("drm/panel: add support for rm69299 visionox panel")
Reviewed-by: Neil Armstrong 
Signed-off-by: Guido Günther 
Reviewed-by: Dmitry Baryshkov 
Signed-off-by: Neil Armstrong 
Link: https://lore.kernel.org/r/20250910-shift6mq-panel-v3-2-a7729911afb9@sigxcpu.org
Signed-off-by: Sasha Levin

drm/panel: simple: Update timings for AUO G101EVN010

2025-05-18T06:20:38+00:00

[ Upstream commit 7c6fa1797a725732981f2d77711c867166737719 ]

Switch to panel timings based on datasheet for the AUO G101EVN01.0
LVDS panel. Default timings were tested on the panel.

Previous mode-based timings resulted in horizontal display shift.

Signed-off-by: Kevin Baker 
Fixes: 4fb86404a977 ("drm/panel: simple: Add AUO G101EVN010 panel support")
Reviewed-by: Neil Armstrong 
Link: https://lore.kernel.org/r/20250505170256.1385113-1-kevinb@ventureresearch.com
Signed-off-by: Neil Armstrong 
Link: https://lore.kernel.org/r/20250505170256.1385113-1-kevinb@ventureresearch.com
Signed-off-by: Sasha Levin

drm/panel: simple: Add Microchip AC69T88A LVDS Display panel

2024-12-14T18:51:38+00:00

[ Upstream commit 40da1463cd6879f542238b36c1148f517927c595 ]

Add support for Microchip AC69T88A 5 inch TFT LCD 800x480
Display module with LVDS interface.The panel uses the Sitronix
ST7262 800x480 Display driver

Signed-off-by: Manikandan Muralidharan 
Signed-off-by: Dharma Balasubiramani 
Reviewed-by: Dmitry Baryshkov 
Link: https://patchwork.freedesktop.org/patch/msgid/20240919091548.430285-2-manikandan.m@microchip.com
Signed-off-by: Dmitry Baryshkov 
Signed-off-by: Sasha Levin

drm/panel: boe-tv101wum-nl6: Check for errors on the NOP in prepare()

2024-08-19T03:45:00+00:00

[ Upstream commit 6320b9199dd99622668649c234d4e8a99e44a9c8 ]

The mipi_dsi_dcs_nop() function returns an error but we weren't
checking it in boe_panel_prepare(). Add a check. This is highly
unlikely to matter in practice. If the NOP failed then likely later
MIPI commands would fail too.

Found by code inspection.

Fixes: 812562b8d881 ("drm/panel: boe-tv101wum-nl6: Fine tune the panel power sequence")
Signed-off-by: Douglas Anderson 
Reviewed-by: AngeloGioacchino Del Regno 
Reviewed-by: Dmitry Baryshkov 
Reviewed-by: Linus Walleij 
Link: https://lore.kernel.org/r/20240517143643.3.Ibffbaa5b4999ac0e55f43bf353144433b099d727@changeid
Signed-off-by: Neil Armstrong 
Link: https://patchwork.freedesktop.org/patch/msgid/20240517143643.3.Ibffbaa5b4999ac0e55f43bf353144433b099d727@changeid
Signed-off-by: Sasha Levin

drm/panel: boe-tv101wum-nl6: If prepare fails, disable GPIO before regulators

2024-08-19T03:45:00+00:00

[ Upstream commit 587c48f622374e5d47b1d515c6006a4df4dee882 ]

The enable GPIO should clearly be set low before turning off
regulators. That matches both the inverse order that things were
enabled and also the order in unprepare().

Fixes: a869b9db7adf ("drm/panel: support for boe tv101wum-nl6 wuxga dsi video mode panel")
Signed-off-by: Douglas Anderson 
Reviewed-by: Dmitry Baryshkov 
Reviewed-by: Linus Walleij 
Link: https://lore.kernel.org/r/20240517143643.2.Ieac346cd0f1606948ba39ceea06b55359fe972b6@changeid
Signed-off-by: Neil Armstrong 
Link: https://patchwork.freedesktop.org/patch/msgid/20240517143643.2.Ieac346cd0f1606948ba39ceea06b55359fe972b6@changeid
Signed-off-by: Sasha Levin

drm/panel: simple: Add missing display timing flags for KOE TX26D202VM0BWA

2024-07-05T07:14:44+00:00

[ Upstream commit 37ce99b77762256ec9fda58d58fd613230151456 ]

KOE TX26D202VM0BWA panel spec indicates the DE signal is active high in
timing chart, so add DISPLAY_FLAGS_DE_HIGH flag in display timing flags.
This aligns display_timing with panel_desc.

Fixes: 8a07052440c2 ("drm/panel: simple: Add support for KOE TX26D202VM0BWA panel")
Signed-off-by: Liu Ying 
Reviewed-by: Neil Armstrong 
Link: https://lore.kernel.org/r/20240624015612.341983-1-victor.liu@nxp.com
Signed-off-by: Neil Armstrong 
Link: https://patchwork.freedesktop.org/patch/msgid/20240624015612.341983-1-victor.liu@nxp.com
Signed-off-by: Sasha Levin

drm/panel: ilitek-ili9881c: Fix warning with GPIO controllers that sleep

2024-07-05T07:14:42+00:00

[ Upstream commit ee7860cd8b5763017f8dc785c2851fecb7a0c565 ]

The ilitek-ili9881c controls the reset GPIO using the non-sleeping
gpiod_set_value() function. This complains loudly when the GPIO
controller needs to sleep. As the caller can sleep, use
gpiod_set_value_cansleep() to fix the issue.

Signed-off-by: Laurent Pinchart 
Reviewed-by: Neil Armstrong 
Link: https://lore.kernel.org/r/20240317154839.21260-1-laurent.pinchart@ideasonboard.com
Signed-off-by: Neil Armstrong 
Link: https://patchwork.freedesktop.org/patch/msgid/20240317154839.21260-1-laurent.pinchart@ideasonboard.com
Signed-off-by: Sasha Levin

drm/panel: simple: Add missing Innolux G121X1-L03 format, flags, connector

2024-06-16T11:39:30+00:00

[ Upstream commit 11ac72d033b9f577e8ba0c7a41d1c312bb232593 ]

The .bpc = 6 implies .bus_format = MEDIA_BUS_FMT_RGB666_1X7X3_SPWG ,
add the missing bus_format. Add missing connector type and bus_flags
as well.

Documentation [1] 1.4 GENERAL SPECIFICATI0NS indicates this panel is
capable of both RGB 18bit/24bit panel, the current configuration uses
18bit mode, .bus_format = MEDIA_BUS_FMT_RGB666_1X7X3_SPWG , .bpc = 6.

Support for the 24bit mode would require another entry in panel-simple
with .bus_format = MEDIA_BUS_FMT_RGB666_1X7X4_SPWG and .bpc = 8, which
is out of scope of this fix.

[1] https://www.distec.de/fileadmin/pdf/produkte/TFT-Displays/Innolux/G121X1-L03_Datasheet.pdf

Fixes: f8fa17ba812b ("drm/panel: simple: Add support for Innolux G121X1-L03")
Signed-off-by: Marek Vasut 
Acked-by: Jessica Zhang 
Link: https://patchwork.freedesktop.org/patch/msgid/20240328102746.17868-2-marex@denx.de
Signed-off-by: Sasha Levin

drm/panel: ili9341: Use predefined error codes

2024-05-17T09:50:51+00:00

[ Upstream commit da85f0aaa9f21999753b01d45c0343f885a8f905 ]

In one case the -1 is returned which is quite confusing code for
the wrong device ID, in another the ret is returning instead of
plain 0 that also confusing as readed may ask the possible meaning
of positive codes, which are never the case there. Convert both
to use explicit predefined error codes to make it clear what's going
on there.

Fixes: 5a04227326b0 ("drm/panel: Add ilitek ili9341 panel driver")
Signed-off-by: Andy Shevchenko 
Reviewed-by: Neil Armstrong 
Reviewed-by: Sui Jingfeng 
Link: https://lore.kernel.org/r/20240425142706.2440113-4-andriy.shevchenko@linux.intel.com
Signed-off-by: Neil Armstrong 
Link: https://patchwork.freedesktop.org/patch/msgid/20240425142706.2440113-4-andriy.shevchenko@linux.intel.com
Signed-off-by: Sasha Levin