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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>
hifive-unleashed-5.1
Stefan Wahren 2018-08-27 19:31:17 +02:00
parent b33b80710a
commit a54fe8a6cf
3 changed files with 140 additions and 0 deletions
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1
arch/arm/boot/dts/Makefile
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@ -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) += \

87
arch/arm/boot/dts/bcm2837-rpi-cm3-io3.dts 100644
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@ -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";
};

52
arch/arm/boot/dts/bcm2837-rpi-cm3.dtsi 100644
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@ -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";
};