Enable support for Raspberry Pi CM3

This patch adds support for running the Apertis 4.19 kernel on the Raspberry Pi CM3 module plugged on top of the MyPi Industrial IoT Integrator I/O Board APERTIS-6053 Signed-off-by: Ritesh Raj Sarraf <ritesh.sarraf@collabora.com>

Enable support for Raspberry Pi CM3
b6832aee · Ritesh Raj Sarraf · Apertis package maintainers · 955ac3e4 · b6832aee · b6832aee
Commit b6832aee authored 5 years ago by Ritesh Raj Sarraf Committed by Apertis package maintainers 5 years ago
--- a/debian/patches/rpi/ARM-dts-add-Raspberry-Pi-Compute-Module-3-and-IO-boa.patch
+++ b/debian/patches/rpi/ARM-dts-add-Raspberry-Pi-Compute-Module-3-and-IO-boa.patch
+From a54fe8a6cf66828499b121c3c39c194b43b8ed94 Mon Sep 17 00:00:00 2001
+From: Stefan Wahren <stefan.wahren@i2se.com>
+Date: Mon, 27 Aug 2018 19:31:17 +0200
+Subject: [PATCH] ARM: dts: add Raspberry Pi Compute Module 3 and IO board
+
+The Raspberry Pi Compute Module 3 (CM3) and the Raspberry Pi
+Compute Module 3 Lite (CM3L) are SoMs which contains a BCM2837 processor,
+1 GB RAM and a GPIO expander. The CM3 has a 4 GB eMMC, but on the CM3L
+the eMMC is unpopulated and it's up to the user to connect their
+own SD/MMC device. The dtsi file is designed to work for both modules.
+There is also a matching carrier board which is called
+Compute Module IO Board V3.
+
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ arch/arm/boot/dts/Makefile                |  1 +
+ arch/arm/boot/dts/bcm2837-rpi-cm3-io3.dts | 87 +++++++++++++++++++++++
+ arch/arm/boot/dts/bcm2837-rpi-cm3.dtsi    | 52 ++++++++++++++
+ 3 files changed, 140 insertions(+)
+ create mode 100644 arch/arm/boot/dts/bcm2837-rpi-cm3-io3.dts
+ create mode 100644 arch/arm/boot/dts/bcm2837-rpi-cm3.dtsi
+
+diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
+index b5bd3de87c33..35c749fe22eb 100644
+--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
+@@ -81,6 +81,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += \
+ 	bcm2836-rpi-2-b.dtb \
+ 	bcm2837-rpi-3-b.dtb \
+ 	bcm2837-rpi-3-b-plus.dtb \
+	bcm2837-rpi-cm3-io3.dtb \
+ 	bcm2835-rpi-zero.dtb \
+ 	bcm2835-rpi-zero-w.dtb
+ dtb-$(CONFIG_ARCH_BCM_5301X) += \
+diff --git a/arch/arm/boot/dts/bcm2837-rpi-cm3-io3.dts b/arch/arm/boot/dts/bcm2837-rpi-cm3-io3.dts
+new file mode 100644
+index 000000000000..6c8233a36d86
+--- /dev/null
+++ b/arch/arm/boot/dts/bcm2837-rpi-cm3-io3.dts
+@@ -0,0 +1,87 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+#include "bcm2837-rpi-cm3.dtsi"
+#include "bcm283x-rpi-usb-host.dtsi"
+
+/ {
+	compatible = "raspberrypi,3-compute-module", "brcm,bcm2837";
+	model = "Raspberry Pi Compute Module 3 IO board V3.0";
+};
+
+&gpio {
+	/*
+	 * This is based on the official GPU firmware DT blob.
+	 *
+	 * Legend:
+	 * "NC" = not connected (no rail from the SoC)
+	 * "FOO" = GPIO line named "FOO" on the schematic
+	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
+	 */
+	gpio-line-names = "GPIO0",
+			  "GPIO1",
+			  "GPIO2",
+			  "GPIO3",
+			  "GPIO4",
+			  "GPIO5",
+			  "GPIO6",
+			  "GPIO7",
+			  "GPIO8",
+			  "GPIO9",
+			  "GPIO10",
+			  "GPIO11",
+			  "GPIO12",
+			  "GPIO13",
+			  "GPIO14",
+			  "GPIO15",
+			  "GPIO16",
+			  "GPIO17",
+			  "GPIO18",
+			  "GPIO19",
+			  "GPIO20",
+			  "GPIO21",
+			  "GPIO22",
+			  "GPIO23",
+			  "GPIO24",
+			  "GPIO25",
+			  "GPIO26",
+			  "GPIO27",
+			  "GPIO28",
+			  "GPIO29",
+			  "GPIO30",
+			  "GPIO31",
+			  "GPIO32",
+			  "GPIO33",
+			  "GPIO34",
+			  "GPIO35",
+			  "GPIO36",
+			  "GPIO37",
+			  "GPIO38",
+			  "GPIO39",
+			  "GPIO40",
+			  "GPIO41",
+			  "GPIO42",
+			  "GPIO43",
+			  "GPIO44",
+			  "GPIO45",
+			  "GPIO46",
+			  "GPIO47",
+			  /* Used by eMMC */
+			  "SD_CLK_R",
+			  "SD_CMD_R",
+			  "SD_DATA0_R",
+			  "SD_DATA1_R",
+			  "SD_DATA2_R",
+			  "SD_DATA3_R";
+
+	pinctrl-0 = <&gpioout &alt0>;
+};
+
+&hdmi {
+	hpd-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
+};
+
+&uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_gpio14>;
+	status = "okay";
+};
+diff --git a/arch/arm/boot/dts/bcm2837-rpi-cm3.dtsi b/arch/arm/boot/dts/bcm2837-rpi-cm3.dtsi
+new file mode 100644
+index 000000000000..7b7ab6aea988
+--- /dev/null
+++ b/arch/arm/boot/dts/bcm2837-rpi-cm3.dtsi
+@@ -0,0 +1,52 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+#include "bcm2837.dtsi"
+#include "bcm2835-rpi.dtsi"
+
+/ {
+	memory {
+		reg = <0 0x40000000>;
+	};
+
+	reg_3v3: fixed-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "3V3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+	};
+
+	reg_1v8: fixed-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "1V8";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-always-on;
+	};
+};
+
+&firmware {
+	expgpio: gpio {
+		compatible = "raspberrypi,firmware-gpio";
+		gpio-controller;
+		#gpio-cells = <2>;
+		gpio-line-names = "HDMI_HPD_N",
+				  "EMMC_EN_N",
+				  "NC",
+				  "NC",
+				  "NC",
+				  "NC",
+				  "NC",
+				  "NC";
+		status = "okay";
+	};
+};
+
+&sdhost {
+	pinctrl-names = "default";
+	pinctrl-0 = <&sdhost_gpio48>;
+	bus-width = <4>;
+	vmmc-supply = <&reg_3v3>;
+	vqmmc-supply = <&reg_1v8>;
+	status = "okay";
+};
+-- 
+2.20.1
+
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -200,4 +200,5 @@ apparmor/0001-apparmor-patch-to-provide-compatibility-with-v2.x-ne.patch
 apparmor/0002-apparmor-af_unix-mediation.patch
 apparmor/0003-apparmor-fix-use-after-free-in-sk_peer_label.patch

-# ABI maintenance
+# RaspberryPi support
+rpi/ARM-dts-add-Raspberry-Pi-Compute-Module-3-and-IO-boa.patch