pmaports/device/testing/linux-clockworkpi-uconsole-cm4/0004-arm-dts-overlays-add-uconsole-cm4.patch

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