mirror of
https://github.com/kernelkit/infix.git
synced 2026-07-22 01:13:00 +02:00
104 lines
3.6 KiB
Diff
104 lines
3.6 KiB
Diff
From cefae1e7c6a3cfff52c0cfe283f3eac735ff7dd3 Mon Sep 17 00:00:00 2001
|
|
From: Mattias Walström <lazzer@gmail.com>
|
|
Date: Wed, 20 Aug 2025 21:38:24 +0200
|
|
Subject: [PATCH 13/48] drm/panel-simple: Add a timing for the Raspberry Pi 7"
|
|
panel
|
|
|
|
The Raspberry Pi 7" 800x480 panel uses a Toshiba TC358762 DSI
|
|
to DPI bridge chip, so there is a requirement for the timings
|
|
to be specified for the end panel. Add such a definition.
|
|
|
|
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
|
|
|
|
drm/panel: simple: Alter the timing for the Pi 7" DSI display
|
|
|
|
vc4 has always fixed up the timing, so the values defined have
|
|
never actually appeared on the wire.
|
|
The display appears to want a slightly longer HFP, so extend
|
|
the timings and recompute the clock to give the same frame rate.
|
|
|
|
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
|
|
|
|
drm/panel-simple: Fix 7inch panel mode for misalignment
|
|
|
|
The 7inch panel is one line off the screen both horizontally
|
|
and vertically.
|
|
|
|
Alter the panel mode to correct this.
|
|
|
|
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
|
|
|
|
drm/panel-simple: Increase pixel clock on Pi 7inch panel
|
|
|
|
The Toshiba bridge is very fussy and doesn't like the CM3
|
|
output when being told to produce a 27.777MHz pixel clock, which
|
|
is an almost perfect match to the DSI link integer divider.
|
|
|
|
Increasing to 30MHz will switch the DSI link from 333MHz to 400MHz
|
|
and makes the bridge happy with the same video timing as works
|
|
on Pi4.
|
|
(Pi4 will be using a link frequency of 375MHz due to a 3GHz
|
|
parent PLL).
|
|
|
|
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
|
|
---
|
|
drivers/gpu/drm/panel/panel-simple.c | 31 +++++++++++++++++++++++++++-
|
|
1 file changed, 30 insertions(+), 1 deletion(-)
|
|
|
|
diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
|
|
index 271f93399193..75dbc3cb8135 100644
|
|
--- a/drivers/gpu/drm/panel/panel-simple.c
|
|
+++ b/drivers/gpu/drm/panel/panel-simple.c
|
|
@@ -400,7 +400,8 @@ static int panel_simple_get_modes(struct drm_panel *panel,
|
|
* TODO: Remove once all drm drivers call
|
|
* drm_connector_set_orientation_from_panel()
|
|
*/
|
|
- drm_connector_set_panel_orientation(connector, p->orientation);
|
|
+ /* RPI Hack */
|
|
+ //drm_connector_set_panel_orientation(connector, p->orientation);
|
|
|
|
return num;
|
|
}
|
|
@@ -4074,6 +4075,31 @@ static const struct panel_desc qishenglong_gopher2b_lcd = {
|
|
.connector_type = DRM_MODE_CONNECTOR_DPI,
|
|
};
|
|
|
|
+static const struct drm_display_mode raspberrypi_7inch_mode = {
|
|
+ .clock = 30000,
|
|
+ .hdisplay = 800,
|
|
+ .hsync_start = 800 + 131,
|
|
+ .hsync_end = 800 + 131 + 2,
|
|
+ .htotal = 800 + 131 + 2 + 45,
|
|
+ .vdisplay = 480,
|
|
+ .vsync_start = 480 + 7,
|
|
+ .vsync_end = 480 + 7 + 2,
|
|
+ .vtotal = 480 + 7 + 2 + 22,
|
|
+ .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
|
|
+};
|
|
+
|
|
+static const struct panel_desc raspberrypi_7inch = {
|
|
+ .modes = &raspberrypi_7inch_mode,
|
|
+ .num_modes = 1,
|
|
+ .bpc = 8,
|
|
+ .size = {
|
|
+ .width = 154,
|
|
+ .height = 86,
|
|
+ },
|
|
+ .bus_format = MEDIA_BUS_FMT_RGB888_1X24,
|
|
+ .connector_type = DRM_MODE_CONNECTOR_DSI,
|
|
+};
|
|
+
|
|
static const struct display_timing rocktech_rk043fn48h_timing = {
|
|
.pixelclock = { 6000000, 9000000, 12000000 },
|
|
.hactive = { 480, 480, 480 },
|
|
@@ -5344,6 +5370,9 @@ static const struct of_device_id platform_of_match[] = {
|
|
.compatible = "qishenglong,gopher2b-lcd",
|
|
.data = &qishenglong_gopher2b_lcd,
|
|
}, {
|
|
+ .compatible = "raspberrypi,7inch-dsi",
|
|
+ .data = &raspberrypi_7inch,
|
|
+ }, {
|
|
.compatible = "rocktech,rk043fn48h",
|
|
.data = &rocktech_rk043fn48h,
|
|
}, {
|