kernel: Fix for IN Token of USB Endpoint 1 stopping occasionally on Pi 4

See: raspberrypi/linux#4755

kernel: DPI panel configuration
See: raspberrypi/linux#4753

kernel: KMS 7" DSI panel and touchscreen fixes
See: raspberrypi/linux#4750

kernel: drm/vc4: Hold pm_runtime for vc4
See: raspberrypi/linux#4706

Author: popcornmix

boot/bcm2708-rpi-b-plus.dtb

@@ -3563,6 +3563,34 @@ Load:   dtoverlay=vc4-kms-dpi-at056tn53v1
 Params: <None>
 
 
+Name:   vc4-kms-dpi-generic
+Info:   Enable a generic DPI display under KMS. Default timings are for the
+        Adafruit Kippah with 800x480 panel and RGB666 (GPIOs 0-21)
+        Requires vc4-kms-v3d to be loaded.
+Load:   dtoverlay=vc4-kms-dpi-generic,<param>=<val>
+Params: clock-frequency         Display clock frequency (Hz)
+        hactive                 Horizontal active pixels
+        hfp                     Horizontal front porch
+        hsync                   Horizontal sync pulse width
+        hbp                     Horizontal back porch
+        vactive                 Vertical active lines
+        vfp                     Vertical front porch
+        vsync                   Vertical sync pulse width
+        vbp                     Vertical back porch
+        hsync-invert            Horizontal sync active low
+        vsync-invert            Vertical sync active low
+        de-invert               Data Enable active low
+        pixclk-invert           Negative edge pixel clock
+        width-mm                Define the screen width in mm
+        height-mm               Define the screen height in mm
+        rgb565                  Change to RGB565 output on GPIOs 0-19
+        rgb666-padhi            Change to RGB666 output on GPIOs 0-9, 12-17, and
+                                20-25
+        rgb888                  Change to RGB888 output on GPIOs 0-27
+        bus-format              Override the bus format for a MEDIA_BUS_FMT_*
+                                value. NB also overridden by rgbXXX overrides.
+
+
 Name:   vc4-kms-dsi-7inch
 Info:   Enable the Raspberry Pi DSI 7" screen.
         Includes the edt-ft5406 for the touchscreen element.
@@ -3620,8 +3648,8 @@ Params: cma-512                 CMA is 512MB (needs 1GB)
         cma-default             Use upstream's default value
         audio                   Enable or disable audio over HDMI (default "on")
         noaudio                 Disable all HDMI audio (default "off")
-        nocomposite             Disable the composite video output (default
-                                "off")
+        composite               Enable the composite output (default "off")
+                                N.B. Disables all other outputs on a Pi 4.
 
 
 Name:   vc4-kms-v3d-pi4