path: root/debian/patches/features/arm64/arm64-dts-raspberry-Add-support-for-the-CM4.patch

From: Cyril Brulebois <cyril@debamax.com>
Date: Mon, 03 Jan 2022 21:59:36 +0100
Subject: arm64: dts: Add support for Raspberry Pi Compute Module 4 IO Board

It was introduced in mainline during the v5.16 release cycle. Since
many broadcom includes were reworked since v5.10, adding support would
involve more than cherry-picking a DTS addition that uses a few
includes.

To avoid side effects on other models, introduce a DTS that leverages
some existing includes (bcm2711.dtsi and bcm283x-rpi-usb-host.dtsi)
and describes the rest without re-using parts of the Raspberry Pi 4 B
model.

To avoid phandle rotation (0x16, 0x17, and 0x18) across 3 nodes
(dma@7e007000, i2c@7e205000, and interrupt-controller@7ef00100), and the
related changes in other nodes referencing them, hardcode 0x16 as the
phandle for interrupt-controller@7ef00100. This leads to an empty dtdiff
between this new DTB and the one produced by a v5.16-rc8 build.

Authored-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Cyril Brulebois <cyril@debamax.com>

--- a/arch/arm64/boot/dts/broadcom/Makefile
+++ b/arch/arm64/boot/dts/broadcom/Makefile
@@ -1,5 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
 dtb-$(CONFIG_ARCH_BCM2835) += bcm2711-rpi-4-b.dtb \
+			      bcm2711-rpi-cm4-io.dtb \
 			      bcm2837-rpi-3-a-plus.dtb \
 			      bcm2837-rpi-3-b.dtb \
 			      bcm2837-rpi-3-b-plus.dtb \
--- /dev/null
+++ b/arch/arm64/boot/dts/broadcom/bcm2711-rpi-cm4-io.dts
@@ -0,0 +1,2 @@
+// SPDX-License-Identifier: GPL-2.0
+#include "arm/bcm2711-rpi-cm4-io.dts"
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -93,6 +93,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += \
 	bcm2837-rpi-3-b-plus.dtb \
 	bcm2837-rpi-cm3-io3.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) += \
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2711-rpi-cm4-io.dts
@@ -0,0 +1,373 @@
+/dts-v1/;
+
+#include "bcm2711.dtsi"
+#include "bcm283x-rpi-usb-host.dtsi"
+
+/ {
+	model = "Raspberry Pi Compute Module 4 IO Board";
+	compatible = "raspberrypi,4-compute-module\0brcm,bcm2711";
+
+	aliases {
+		emmc2bus = "/emmc2bus";
+		ethernet0 = "/scb/ethernet@7d580000";
+		pcie0 = "/scb/pcie@7d500000";
+		blconfig = &blconfig;
+	};
+
+	chosen {
+		stdout-path = "serial1:115200n8";
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led-act {
+			label = "ACT";
+			default-state = "keep";
+			linux,default-trigger = "heartbeat";
+			gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-pwr {
+			label = "PWR";
+			gpios = <&expgpio 2 GPIO_ACTIVE_LOW>;
+			default-state = "keep";
+			linux,default-trigger = "default-on";
+		};
+	};
+
+	soc {
+		aon_intr: interrupt-controller@7ef00100 {
+			compatible = "brcm,bcm2711-l2-intc", "brcm,l2-intc";
+			reg = <0x7ef00100 0x30>;
+			phandle = <0x16>;
+			interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-controller;
+			#interrupt-cells = <1>;
+		};
+
+		firmware: firmware {
+			compatible = "raspberrypi,bcm2835-firmware\0simple-mfd";
+			#address-cells = <0x01>;
+			#size-cells = <0x01>;
+			mboxes = <&mailbox>;
+			dma-ranges;
+
+			firmware_clocks: clocks {
+				compatible = "raspberrypi,firmware-clocks";
+				#clock-cells = <0x01>;
+			};
+
+			expgpio: gpio {
+				compatible = "raspberrypi,firmware-gpio";
+				gpio-controller;
+				#gpio-cells = <2>;
+				status = "okay";
+				gpio-line-names = "BT_ON", "WL_ON", "PWR_LED_OFF", "ANT1", "VDD_SD_IO_SEL", "CAM_GPIO", "SD_PWR_ON", "ANT2";
+				ant1-hog {
+					gpio-hog;
+					gpios = <0x03 0x00>;
+					output-high;
+					line-name = "ant1";
+				};
+
+				ant2-hog {
+					gpio-hog;
+					gpios = <0x07 0x00>;
+					output-low;
+					line-name = "ant2";
+				};
+			};
+
+			reset {
+				compatible = "raspberrypi,firmware-reset";
+				#reset-cells = <1>;
+			};
+		};
+
+		power: power {
+			compatible = "raspberrypi,bcm2835-power";
+			firmware = <&firmware>;
+			#power-domain-cells = <1>;
+		};
+
+		mailbox@7e00b840 {
+			compatible = "brcm,bcm2835-vchiq";
+			reg = <0x7e00b840 0x3c>;
+			interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
+		};
+
+		vec@7ec13000 {
+			compatible = "brcm,bcm2711-vec";
+			reg = <0x7ec13000 0x1000>;
+			clocks = <&clocks BCM2835_CLOCK_VEC>;
+			interrupts = <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>;
+			status = "disabled";
+			power-domains = <&power /* RPI_POWER_DOMAIN_VEC = */ 7>;
+		};
+	};
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x00 0x00 0x00>;
+	};
+
+	wifi_pwrseq: wifi-pwrseq {
+		compatible = "mmc-pwrseq-simple";
+		reset-gpios = <&expgpio 0x01 0x01>;
+	};
+
+	sd_io_1v8_reg: sd_io_1v8_reg {
+		compatible = "regulator-gpio";
+		regulator-name = "vdd-sd-io";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+		regulator-always-on;
+		regulator-settling-time-us = <5000>;
+		gpios = <&expgpio 0x04 GPIO_ACTIVE_HIGH>;
+		states = <1800000 0x1>,
+			 <3300000 0x0>;
+		status = "okay";
+	};
+
+	sd_vcc_reg: sd_vcc_reg {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc-sd";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+		enable-active-high;
+		gpio = <&expgpio 6 GPIO_ACTIVE_HIGH>;
+	};
+};
+
+&ddc0 {
+	status = "okay";
+};
+
+&ddc1 {
+	status = "okay";
+};
+
+&dsi0 {
+	power-domains = <&power 17>;
+};
+
+&dsi1 {
+	compatible = "brcm,bcm2711-dsi1";
+	power-domains = <&power 18>;
+};
+
+&emmc2 {
+	status = "okay";
+	bus-width = <8>;
+	vqmmc-supply = <&sd_io_1v8_reg>;
+	vmmc-supply = <&sd_vcc_reg>;
+	broken-cd;
+	mmc-hs200-1_8v;
+};
+
+&gpio {
+	pinctrl-names = "default";
+	/*
+	 * 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";
+
+	gpioout {
+		brcm,pins = <0x06>;
+		brcm,function = <0x01>;
+	};
+
+	alt0 {
+		brcm,pins = <0x04 0x05 0x07 0x08 0x09 0x0a 0x0b>;
+		brcm,function = <0x04>;
+	};
+};
+
+&hdmi0 {
+	status = "okay";
+	interrupt-parent = <&aon_intr>;
+	interrupts = <0>, <1>, <2>, <3>, <4>, <5>;
+	interrupt-names = "cec-tx", "cec-rx", "cec-low", "wakeup", "hpd-connected", "hpd-removed";
+	clocks = <&firmware_clocks 13>, <&firmware_clocks 14>, <&dvp 0>, <&clk_27MHz>;
+	wifi-2.4ghz-coexistence;
+};
+
+&hdmi1 {
+	status = "okay";
+	interrupt-parent = <&aon_intr>;
+	interrupts = <8>, <7>, <6>, <9>, <10>, <11>;
+	interrupt-names = "cec-tx", "cec-rx", "cec-low", "wakeup", "hpd-connected", "hpd-removed";
+	clocks = <&firmware_clocks 13>, <&firmware_clocks 14>, <&dvp 1>, <&clk_27MHz>;
+	wifi-2.4ghz-coexistence;
+};
+
+&hvs {
+	clocks = <&firmware_clocks 4>;
+};
+
+&i2c0 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c0_gpio0>;
+	clock-frequency = <100000>;
+};
+
+&i2c1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c1_gpio2>;
+	clock-frequency = <100000>;
+};
+
+&genet {
+	status = "okay";
+	phy-handle = <&ethphy0>;
+	phy-mode = "rgmii-rxid";
+};
+
+&genet_mdio {
+	ethphy0: ethernet-phy@0 {
+		reg = <0>;
+	};
+};
+
+&pixelvalve0 {
+	status = "okay";
+};
+
+&pixelvalve1 {
+	status = "okay";
+};
+
+&pixelvalve2 {
+	status = "okay";
+};
+
+&pixelvalve4 {
+	status = "okay";
+};
+
+&rmem {
+	blconfig: nvram@0 {
+		compatible = "raspberrypi,bootloader-config", "nvmem-rmem";
+		#address-cells = <0x01>;
+		#size-cells = <0x01>;
+		reg = <0x00 0x00 0x00>;
+		no-map;
+		status = "disabled";
+	};
+};
+
+&sdhci {
+	status = "okay";
+	#address-cells = <1>;
+	#size-cells = <0>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&emmc_gpio34>;
+	bus-width = <4>;
+	non-removable;
+	mmc-pwrseq = <&wifi_pwrseq>;
+
+	wifi@1 {
+		reg = <0x01>;
+		compatible = "brcm,bcm4329-fmac";
+	};
+};
+
+&uart0 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_ctsrts_gpio30 &uart0_gpio32>;
+	uart-has-rtscts;
+
+	bluetooth {
+		compatible = "brcm,bcm43438-bt";
+		max-speed = <0x1e8480>;
+		shutdown-gpios = <&expgpio 0x00 0x00>;
+	};
+};
+
+&uart1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart1_gpio14>;
+};
+
+&usb {
+	power-domains = <&power 6>;
+};
+
+&vc4 {
+	status = "okay";
+};
+
+/delete-node/ &vec;