openwrt/target/linux/bcm27xx/patches-5.15/950-0479-drm-panel-simple-Add-a-timing-for-the-Raspberry-Pi-7.patch

From 02ce5b14d69bf513f3c6cc93c005cae07db985a0 Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
Date: Fri, 26 Mar 2021 17:06:36 +0000
Subject: [PATCH] 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>
---
 drivers/gpu/drm/panel/panel-simple.c | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -3759,6 +3759,31 @@ static const struct panel_desc qishenglo
 	.connector_type = DRM_MODE_CONNECTOR_DPI,
 };
 
+static const struct drm_display_mode raspberrypi_7inch_mode = {
+	.clock = 25979400 / 1000,
+	.hdisplay = 800,
+	.hsync_start = 800 + 2,
+	.hsync_end = 800 + 2 + 2,
+	.htotal = 800 + 2 + 2 + 46,
+	.vdisplay = 480,
+	.vsync_start = 480 + 7,
+	.vsync_end = 480 + 7 + 2,
+	.vtotal = 480 + 7 + 2 + 21,
+	.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_rk070er9427_timing = {
 	.pixelclock = { 26400000, 33300000, 46800000 },
 	.hactive = { 800, 800, 800 },
@@ -4839,6 +4864,9 @@ static const struct of_device_id platfor
 		.compatible = "qishenglong,gopher2b-lcd",
 		.data = &qishenglong_gopher2b_lcd,
 	}, {
+		.compatible = "raspberrypi,7inch-dsi",
+		.data = &raspberrypi_7inch,
+	}, {
 		.compatible = "rocktech,rk070er9427",
 		.data = &rocktech_rk070er9427,
 	}, {