254 lines
6.4 KiB
Diff
254 lines
6.4 KiB
Diff
Original patch: https://github.com/PotatoMania/uconsole-cm3/blob/dev/PKGBUILDs/linux-uconsole-cm3-rpi64/0004-arm-dts-overlays-add-uconsole.patch
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Adapted from Raspberry Pi CM3 to Raspberry Pi CM4
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diff --git a/arch/arm/boot/dts/overlays/Makefile b/arch/arm/boot/dts/overlays/Makefile
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index 04a9c9a8ab90..ddd90f3f087d 100644
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--- a/arch/arm/boot/dts/overlays/Makefile
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+++ b/arch/arm/boot/dts/overlays/Makefile
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@@ -284,6 +284,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
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uart4.dtbo \
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uart4-pi5.dtbo \
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uart5.dtbo \
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+ uconsole.dtbo \
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udrc.dtbo \
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ugreen-dabboard.dtbo \
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upstream.dtbo \
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diff --git a/arch/arm/boot/dts/overlays/uconsole.dts b/arch/arm/boot/dts/overlays/uconsole.dts
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new file mode 100644
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index 000000000000..bfc12f7a029b
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--- /dev/null
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+++ b/arch/arm/boot/dts/overlays/uconsole.dts
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@@ -0,0 +1,233 @@
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+/dts-v1/;
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+/plugin/;
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+
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+#include <dt-bindings/gpio/gpio.h>
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+
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+/* uConsole All In One */
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+
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+/ {
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+ compatible = "brcm,bcm2835";
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+
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+ fragment@70 {
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+ target-path = "/aliases";
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+ __overlay__ {
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+ i2c_uconsole = "/i2c@0";
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+ };
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+ };
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+
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+ fragment@71 {
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+ target-path = "/__symbols__";
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+ __overlay__ {
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+ i2c_uconsole = "/i2c@0";
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+ };
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+ };
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+
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+ fragment@80 {
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+ target-path = "/chosen";
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+ __overlay__ {
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+ bootargs = "snd_bcm2835.enable_headphones=1";
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+ };
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+ };
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+
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+ fragment@90 {
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+ target-path = "/";
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+ __overlay__ {
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+ audio_amplifier: audio-amplifier {
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+ compatible = "simple-amplifier-switch";
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+ sw-gpios = <&gpio 10 1>; /* GPIO10, GPIO_ACTIVE_LOW */
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+ outputs-gpios = <&gpio 11 0>; /* GPIO11, GPIO_ACTIVE_HIGH */
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+ // vdd-supply = <&uc_reg_5v0>;
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+ };
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+
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+ ocp8178_backlight: backlight@0 {
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+ compatible = "ocp8178-backlight";
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+ backlight-control-gpios = <&gpio 9 0>; /* GPIO9 ACTIVE HIGH */
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+ default-brightness = <5>;
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+ // vdd-supply = <&uc_reg_5v0>;
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+ };
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+
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+ battery: battery@0 {
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+ compatible = "simple-battery";
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+ constant-charge-current-max-microamp = <2100000>;
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+ voltage-min-design-microvolt = <3300000>;
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+ voltage-max-design-microvolt = <4200000>;
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+ };
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+
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+ i2c_uconsole: i2c@0 {
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+ reg = <3>;
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+ compatible = "i2c-gpio";
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+ gpios = <&gpio 0 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN) /* sda */
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+ &gpio 1 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN) /* scl */
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+ >;
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+ i2c-gpio,delay-us = <2>; /* ~100 kHz */
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ };
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+
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+ /* TPS61178, the supply for 5V bus, including USB, backlight
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+ */
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+ // uc_reg_5v0: uc-reg-5v0 {
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+ // compatible = "fixed-regulator";
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+ // regulator-name = "sys-5v0";
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+ // regulator-boot-on;
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+ // regulator-always-on; /* cannot be turned off anyway */
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+ // vin-supply = <&usb_power_supply>;
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+ // };
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+ };
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+ };
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+};
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+
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+&leds {
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+ /delete-node/ led-act;
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+
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+ /* This is the green LED under the power button,
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+ * However this is not usable without a hardware modification(move R117 to R116)
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+ */
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+ // act_led: led-act {
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+ // linux,default-trigger = "default-on";
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+ // gpios = <&axp_gpio 0 1>; /* gpio0 on pmu, low active */
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+ // // function = "activity";
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+ // };
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+
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+ /* This is the orange charging LED under the power button.
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+ * Requires a patch to the pinctrl-axp209 driver, because
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+ * charge led is not a gpio thus not supported.
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+ */
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+ // chg_led: led-chg {
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+ // linux,default-trigger = "axp20x-battery-charging-blink-full-solid";
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+ // gpios = <&axp_gpio 99 1>; /* CHGLED on pmu, low active */
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+ // };
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+};
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+
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+/* PMU */
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+&i2c_uconsole {
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+
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+ axp22x: pmic@34 {
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+ interrupt-controller;
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+ #interrupt-cells = <1>;
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+ compatible = "x-powers,axp228", "x-powers,axp223", "x-powers,axp221";
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+ reg = <0x34>; /* i2c address */
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+ interrupt-parent = <&gpio>;
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+ interrupts = <2 8>; /* IRQ_TYPE_LEVEL_LOW */
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+ irq-gpios = <&gpio 2 0>;
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+
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+ /* TODO: figure out the initial output states */
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+ regulators {
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+
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+ x-powers,dcdc-freq = <3000>;
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+
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+ reg_dcdc1: dcdc1 {
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+ regulator-name = "sys-3v3";
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+ regulator-always-on;
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+ regulator-min-microvolt = <3300000>;
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+ regulator-max-microvolt = <3300000>;
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+ };
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+
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+ reg_dcdc3: dcdc3 {
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+ regulator-name = "sys-1v8";
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+ regulator-always-on;
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+ regulator-min-microvolt = <1800000>;
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+ regulator-max-microvolt = <1800000>;
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+ };
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+
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+ /* TODO: switch this on demand? */
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+ reg_aldo1: aldo1 {
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+ regulator-name = "aud-3v3";
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+ regulator-always-on;
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+ regulator-min-microvolt = <3300000>;
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+ regulator-max-microvolt = <3300000>;
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+ };
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+
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+ reg_aldo2: aldo2 {
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+ regulator-name = "disp-3v3";
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+ regulator-min-microvolt = <3300000>;
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+ regulator-max-microvolt = <3300000>;
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+ };
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+
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+ /* DLDO2-DLDO4 are connected in parallel.
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+ * They seem not necessary, BUT they are connected to the TPS2553's enable pin!
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+ * Disable them will shutdown the USB 5V line.
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+ */
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+ reg_dldo2: dldo2 {
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+ regulator-name = "vcc-3v3-ext-a";
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+ regulator-always-on;
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+ regulator-min-microvolt = <3300000>;
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+ regulator-max-microvolt = <3300000>;
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+ };
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+
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+ reg_dldo3: dldo3 {
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+ regulator-name = "vcc-3v3-ext-b";
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+ regulator-always-on;
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+ regulator-min-microvolt = <3300000>;
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+ regulator-max-microvolt = <3300000>;
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+ };
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+
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+ reg_dldo4: dldo4 {
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+ regulator-name = "vcc-3v3-ext-c";
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+ regulator-always-on;
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+ regulator-min-microvolt = <3300000>;
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+ regulator-max-microvolt = <3300000>;
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+ };
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+ };
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+
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+ battery_power_supply: battery-power-supply {
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+ compatible = "x-powers,axp221-battery-power-supply";
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+ monitored-battery = <&battery>;
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+ };
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+
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+ ac_power_supply: ac_power_supply {
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+ compatible = "x-powers,axp221-ac-power-supply";
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+ };
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+
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+ axp_adc: adc {
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+ compatible = "x-powers,axp221-adc";
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+ #io-channel-cells = <1>;
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+ };
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+
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+ axp_gpio: gpio {
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+ compatible = "x-powers,axp221-gpio";
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+ gpio-controller;
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+ #gpio-cells = <2>;
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+ status = "disabled";
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+
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+ gpio0_out: gpio0-out-pin {
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+ pins = "GPIO0";
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+ function = "gpio_out";
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+ };
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+ };
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+
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+ /* IPSOUT, feed to on-board buck to get 5V output */
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+ /* TODO: figure out how to configure it properly */
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+ usb_power_supply: usb-power {
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+ compatible = "x-powers,axp221-usb-power-supply";
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+ };
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+ };
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+};
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+
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+&dsi1 {
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ status = "okay";
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+
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+ port {
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+ dsi_out_port: endpoint {
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+ remote-endpoint = <&panel_dsi_port>;
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+ };
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+ };
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+
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+ panel_cwu50: panel@0 {
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+ compatible = "clockwork,cwu50";
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+ reg = <0>;
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+ reset-gpio = <&gpio 8 1>; /* GPIO8 ACTIVE LOW */
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+ backlight = <&ocp8178_backlight>;
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+ rotation = <90>;
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+ iovcc-supply = <®_dcdc3>;
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+ vci-supply = <®_aldo2>;
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+
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+ port {
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+ panel_dsi_port: endpoint {
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+ remote-endpoint = <&dsi_out_port>;
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+ };
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+ };
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+ };
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+};
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