Add RPi 5 base device tree with MCP2515 device-tree overlay as an example

Torben Woltjen · pelwell · commit 0401e0aa0019 · 2025-05-15T17:02:20.000+01:00
diff --git a/dtmerge/dtmerge.1 b/dtmerge/dtmerge.1
@@ -60,9 +60,12 @@ Produce a device-tree for the Raspberry Pi 3+ in "out.dtb" which includes the
 GPIO shutdown overlay (with all parameters set to their default).
 .
 .TP
-.B dtmerge /boot/bcm2710-rpi-3-b-plus.dtb out.dtb /boot/overlays/gpio-shutdown.dtbo gpio_pin=5
-Produce a device-tree for the Raspberry Pi 3+ in "out.dtb" which includes the
-GPIO shutdown overlay. Additionally, it sets the gpio shutdown pin to 5.
+.B dtmerge /boot/bcm2712-rpi-5-b.dtb out.dtb /boot/overlays/mcp2515-can0.dtbo oscillator=12000000 interrupt=25 spimaxfrequency=2000000
+Produce a device-tree for the Raspberry Pi 5 in "out.dtb" which includes the
+MCP2515 CAN bus module overlay. The overlay is configured with the following
+settings: the oscillator frequency is set to 12 MHz (depending on the quartz
+crystal used), the interrupt GPIO pin is set to 25, and the SPI frequency is
+limited to 2 MHz.
 .
 .
 .SH SEE ALSO

Original file line number	Diff line number	Diff line change
`@@ -60,9 +60,12 @@ Produce a device-tree for the Raspberry Pi 3+ in "out.dtb" which includes the`
`60`	`60`	`GPIO shutdown overlay (with all parameters set to their default).`
`61`	`61`	`.`
`62`	`62`	`.TP`
`63`		`-.B dtmerge /boot/bcm2710-rpi-3-b-plus.dtb out.dtb /boot/overlays/gpio-shutdown.dtbo gpio_pin=5`
`64`		`-Produce a device-tree for the Raspberry Pi 3+ in "out.dtb" which includes the`
`65`		`-GPIO shutdown overlay. Additionally, it sets the gpio shutdown pin to 5.`
	`63`	`+.B dtmerge /boot/bcm2712-rpi-5-b.dtb out.dtb /boot/overlays/mcp2515-can0.dtbo oscillator=12000000 interrupt=25 spimaxfrequency=2000000`
	`64`	`+Produce a device-tree for the Raspberry Pi 5 in "out.dtb" which includes the`
	`65`	`+MCP2515 CAN bus module overlay. The overlay is configured with the following`
	`66`	`+settings: the oscillator frequency is set to 12 MHz (depending on the quartz`
	`67`	`+crystal used), the interrupt GPIO pin is set to 25, and the SPI frequency is`
	`68`	`+limited to 2 MHz.`
`66`	`69`	`.`
`67`	`70`	`.`
`68`	`71`	`.SH SEE ALSO`