diff mbox series

[V2,09/10] ARM: dts: Add Raspberry Pi Compute Module 4 IO Board

Message ID 1628334401-6577-10-git-send-email-stefan.wahren@i2se.com (mailing list archive)
State New, archived
Headers show
Series ARM: dts: Add Raspberry Pi CM4 & CM4 IO Board support | expand

Commit Message

Stefan Wahren Aug. 7, 2021, 11:06 a.m. UTC 
This adds the matching carrier for Raspberry Pi Compute Module 4.
Instead of xHCI USB host controller there is just a USB 2.0 interface
connected to the DWC2 controller from the BCM2711. As a result
there is a free PCIe Gen 2 socket. Also there are 2 full-size HDMI 2.0
connectors.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
---
 arch/arm/boot/dts/Makefile               |   1 +
 arch/arm/boot/dts/bcm2711-rpi-cm4-io.dts | 138 +++++++++++++++++++++++++++++++
 2 files changed, 139 insertions(+)
 create mode 100644 arch/arm/boot/dts/bcm2711-rpi-cm4-io.dts

Comments

Nicolas Saenz Julienne Sept. 4, 2021, 2:52 p.m. UTC | #1 
On Sat, 2021-08-07 at 13:06 +0200, Stefan Wahren wrote:
> This adds the matching carrier for Raspberry Pi Compute Module 4.
> Instead of xHCI USB host controller there is just a USB 2.0 interface
> connected to the DWC2 controller from the BCM2711. As a result
> there is a free PCIe Gen 2 socket. Also there are 2 full-size HDMI 2.0
> connectors.
> 
> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
> ---

A general note: the CM4 carrier board contains an RTC and a simple fan
controller, which will need to be enabled further down the road.

Regards,
Nicolas
Stefan Wahren Sept. 5, 2021, 10:33 a.m. UTC | #2 
Hi Nicolas,

Am 04.09.21 um 16:52 schrieb nicolas saenz julienne:
> On Sat, 2021-08-07 at 13:06 +0200, Stefan Wahren wrote:
>> This adds the matching carrier for Raspberry Pi Compute Module 4.
>> Instead of xHCI USB host controller there is just a USB 2.0 interface
>> connected to the DWC2 controller from the BCM2711. As a result
>> there is a free PCIe Gen 2 socket. Also there are 2 full-size HDMI 2.0
>> connectors.
>>
>> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
>> ---
> A general note: the CM4 carrier board contains an RTC and a simple fan
> controller, which will need to be enabled further down the road.

yes i forgot to mention that i left out these parts because they are
connected to the VideoCore I2C. But yes, this could be added later ...

Best regards
Stefan

>
> Regards,
> Nicolas
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
diff mbox series

Patch

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 863347b..d3f25b9 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -90,6 +90,7 @@  dtb-$(CONFIG_ARCH_BCM2835) += \
 	bcm2837-rpi-cm3-io3.dtb \
 	bcm2711-rpi-400.dtb \
 	bcm2711-rpi-4-b.dtb \
+	bcm2711-rpi-cm4-io.dtb \
 	bcm2835-rpi-zero.dtb \
 	bcm2835-rpi-zero-w.dtb
 dtb-$(CONFIG_ARCH_BCM_5301X) += \
diff --git a/arch/arm/boot/dts/bcm2711-rpi-cm4-io.dts b/arch/arm/boot/dts/bcm2711-rpi-cm4-io.dts
new file mode 100644
index 0000000..19600b6
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2711-rpi-cm4-io.dts
@@ -0,0 +1,138 @@ 
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+#include "bcm2711-rpi-cm4.dtsi"
+#include "bcm283x-rpi-usb-host.dtsi"
+
+/ {
+	model = "Raspberry Pi Compute Module 4 IO Board";
+
+	leds {
+		led-act {
+			gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-pwr {
+			label = "PWR";
+			gpios = <&expgpio 2 GPIO_ACTIVE_LOW>;
+			default-state = "keep";
+			linux,default-trigger = "default-on";
+		};
+	};
+};
+
+&ddc0 {
+	status = "okay";
+};
+
+&ddc1 {
+	status = "okay";
+};
+
+&gpio {
+	/*
+	 * Parts taken from rpi_SCH_4b_4p0_reduced.pdf and
+	 * the official GPU firmware DT blob.
+	 *
+	 * Legend:
+	 * "FOO" = GPIO line named "FOO" on the schematic
+	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
+	 */
+	gpio-line-names = "ID_SDA",
+			  "ID_SCL",
+			  "SDA1",
+			  "SCL1",
+			  "GPIO_GCLK",
+			  "GPIO5",
+			  "GPIO6",
+			  "SPI_CE1_N",
+			  "SPI_CE0_N",
+			  "SPI_MISO",
+			  "SPI_MOSI",
+			  "SPI_SCLK",
+			  "GPIO12",
+			  "GPIO13",
+			  /* Serial port */
+			  "TXD1",
+			  "RXD1",
+			  "GPIO16",
+			  "GPIO17",
+			  "GPIO18",
+			  "GPIO19",
+			  "GPIO20",
+			  "GPIO21",
+			  "GPIO22",
+			  "GPIO23",
+			  "GPIO24",
+			  "GPIO25",
+			  "GPIO26",
+			  "GPIO27",
+			  "RGMII_MDIO",
+			  "RGMIO_MDC",
+			  /* Used by BT module */
+			  "CTS0",
+			  "RTS0",
+			  "TXD0",
+			  "RXD0",
+			  /* Used by Wifi */
+			  "SD1_CLK",
+			  "SD1_CMD",
+			  "SD1_DATA0",
+			  "SD1_DATA1",
+			  "SD1_DATA2",
+			  "SD1_DATA3",
+			  /* Shared with SPI flash */
+			  "PWM0_MISO",
+			  "PWM1_MOSI",
+			  "STATUS_LED_G_CLK",
+			  "SPIFLASH_CE_N",
+			  "SDA0",
+			  "SCL0",
+			  "RGMII_RXCLK",
+			  "RGMII_RXCTL",
+			  "RGMII_RXD0",
+			  "RGMII_RXD1",
+			  "RGMII_RXD2",
+			  "RGMII_RXD3",
+			  "RGMII_TXCLK",
+			  "RGMII_TXCTL",
+			  "RGMII_TXD0",
+			  "RGMII_TXD1",
+			  "RGMII_TXD2",
+			  "RGMII_TXD3";
+};
+
+&hdmi0 {
+	status = "okay";
+};
+
+&hdmi1 {
+	status = "okay";
+};
+
+&genet {
+	status = "okay";
+};
+
+&pixelvalve0 {
+	status = "okay";
+};
+
+&pixelvalve1 {
+	status = "okay";
+};
+
+&pixelvalve2 {
+	status = "okay";
+};
+
+&pixelvalve4 {
+	status = "okay";
+};
+
+&vc4 {
+	status = "okay";
+};
+
+&vec {
+	status = "disabled";
+};