ARM: dts: add Raspberry Pi Compute Module and IO board

The Raspberry Pi Compute Module (CM1) is a SoM which contains a
BCM2835 processor, 512 MB RAM and a 4 GB eMMC. There is also a carrier
board which is called Compute Module IO Board.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 37a3de7..07b306f 100644 (file)
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -73,6 +73,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += \
        bcm2835-rpi-b-rev2.dtb \
        bcm2835-rpi-b-plus.dtb \
        bcm2835-rpi-a-plus.dtb \
+       bcm2835-rpi-cm1-io1.dtb \
        bcm2836-rpi-2-b.dtb \
        bcm2837-rpi-3-b.dtb \
        bcm2837-rpi-3-b-plus.dtb \

diff --git a/arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts b/arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts
new file mode 100644 (file)
index 0000000..4764a25
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2835-rpi-cm1-io1.dts
@@ -0,0 +1,88 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+#include "bcm2835-rpi-cm1.dtsi"
+#include "bcm283x-rpi-usb-host.dtsi"
+
+/ {
+       compatible = "raspberrypi,compute-module", "brcm,bcm2835";
+       model = "Raspberry Pi Compute Module IO board rev1";
+};
+
+&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",
+                         "HDMI_HPD_N",
+                         /* Also used as ACT LED */
+                         "EMMC_EN_N",
+                         /* 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 = <&gpio 46 GPIO_ACTIVE_LOW>;
+};
+
+&uart0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&uart0_gpio14>;
+       status = "okay";
+};

diff --git a/arch/arm/boot/dts/bcm2835-rpi-cm1.dtsi b/arch/arm/boot/dts/bcm2835-rpi-cm1.dtsi
new file mode 100644 (file)
index 0000000..ef22c2d
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2835-rpi-cm1.dtsi
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+#include "bcm2835.dtsi"
+#include "bcm2835-rpi.dtsi"
+
+/ {
+       leds {
+               act {
+                       gpios = <&gpio 47 GPIO_ACTIVE_LOW>;
+               };
+       };
+
+       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;
+       };
+};
+
+&sdhost {
+       non-removable;
+       vmmc-supply = <&reg_3v3>;
+       vqmmc-supply = <&reg_1v8>;
+};