[PATCH v4 2/2] arm64: dts: qcom: add TP-Link Archer AX55 v1

[Gabor Juhos <j4g8y7@gmail.com>]

Add device tree source for the TP-Link Archer AX55 v1 [1]
which is a dual-band WiFi router based on the IPQ5018 SoC.

At the moment, only the UART, the GPIO LEDs and buttons
are usable, but it makes it possible to boot an initramfs
image on the device.

The device tree can be extended in the future, once support
for other periherals will be available for the platform.

1. https://www.tp-link.com/en/home-networking/wifi-router/archer-ax55/v1/

Signed-off-by: Gabor Juhos <j4g8y7@gmail.com>
---
Changes in v4:
  - change the orange WAN LED's function to use LED_FUNCTION_WAN_ONLINE
    definition introduced in v6.9-rc1
  - remove function-enumerator properties from the WLAN LEDs and change
    its' functions to use LED_FUNCTION_WLAN_[25]GHZ definitions introduced
    in v6.9-rc1
  - rebase on top of v6.9-rc1

Changes in v3:
  - change pin configuration to use "gpio20" and "gpio21" for UART pins
  - rebase on top of v6.8.
  - Link to v2: https://lore.kernel.org/r/20240226-archer-ax55-v1-v2-2-3776eb61f432@gmail.com

Changes in v2:
  - reorder the properties in TLMM pin configuration nodes to follow the
    usual order pointed out by Krzysztof
  - Link to v1: https://lore.kernel.org/all/20240223-archer-ax55-v1-v1-2-99f8fa2c3858@gmail.com

Note: running 'make CHECK_DTBS=y qcom/ipq5018-tplink-archer-ax55-v1.dtb'
shows the following:

    DTC_CHK arch/arm64/boot/dts/qcom/ipq5018-tplink-archer-ax55-v1.dtb
  <...>/arch/arm64/boot/dts/qcom/ipq5018-tplink-archer-ax55-v1.dtb: usb@8af8800: interrupts: [[0, 62, 4]] is too short
  	from schema $id: http://devicetree.org/schemas/usb/qcom,dwc3.yaml#
  <...>/arch/arm64/boot/dts/qcom/ipq5018-tplink-archer-ax55-v1.dtb: usb@8af8800: interrupt-names: ['hs_phy_irq'] is too short
  	from schema $id: http://devicetree.org/schemas/usb/qcom,dwc3.yaml#
  <...>/arch/arm64/boot/dts/qcom/ipq5018-tplink-archer-ax55-v1.dtb: usb@8af8800: interrupts: [[0, 62, 4]] is too short
  	from schema $id: http://devicetree.org/schemas/usb/qcom,dwc3.yaml#
  <...>/arch/arm64/boot/dts/qcom/ipq5018-tplink-archer-ax55-v1.dtb: usb@8af8800: interrupt-names:0: 'pwr_event' was expected
  	from schema $id: http://devicetree.org/schemas/usb/qcom,dwc3.yaml#
  <...>/arch/arm64/boot/dts/qcom/ipq5018-tplink-archer-ax55-v1.dtb: usb@8af8800: interrupt-names: ['hs_phy_irq'] is too short
  	from schema $id: http://devicetree.org/schemas/usb/qcom,dwc3.yaml#

This is not caused by the new device tree per se but comes from
the usb@8af8800 node defined in ipq5018.dtsi. Running the check
on 'qcom/ipq5018-rdp432-c2.dtb' shows the same.
---
 arch/arm64/boot/dts/qcom/Makefile                  |   1 +
 .../dts/qcom/ipq5018-tplink-archer-ax55-v1.dts     | 128 +++++++++++++++++++++
 2 files changed, 129 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
index 7d40ec5e7d214..c934e3aab2f44 100644
--- a/arch/arm64/boot/dts/qcom/Makefile
+++ b/arch/arm64/boot/dts/qcom/Makefile
@@ -10,6 +10,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= apq8094-sony-xperia-kitakami-karin_windy.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= apq8096-db820c.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= apq8096-ifc6640.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= ipq5018-rdp432-c2.dtb
+dtb-$(CONFIG_ARCH_QCOM)	+= ipq5018-tplink-archer-ax55-v1.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= ipq5332-rdp441.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= ipq5332-rdp442.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= ipq5332-rdp468.dtb
diff --git a/arch/arm64/boot/dts/qcom/ipq5018-tplink-archer-ax55-v1.dts b/arch/arm64/boot/dts/qcom/ipq5018-tplink-archer-ax55-v1.dts
new file mode 100644
index 0000000000000..5bb021cb29cd3
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/ipq5018-tplink-archer-ax55-v1.dts
@@ -0,0 +1,128 @@
+// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
+
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/leds/common.h>
+
+#include "ipq5018.dtsi"
+
+/ {
+	model = "TP-Link Archer AX55 v1";
+	compatible = "tplink,archer-ax55-v1", "qcom,ipq5018";
+
+	aliases {
+		serial0 = &blsp1_uart1;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	leds {
+		compatible = "gpio-leds";
+		pinctrl-0 = <&led_pins>;
+		pinctrl-names = "default";
+
+		led-0 {
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_LAN;
+			gpios = <&tlmm 10 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-1 {
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_WAN_ONLINE;
+			gpios = <&tlmm 11 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-2 {
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_WLAN_2GHZ;
+			gpios = <&tlmm 13 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-3 {
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_POWER;
+			gpios = <&tlmm 18 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-4 {
+			color = <LED_COLOR_ID_ORANGE>;
+			function = LED_FUNCTION_WAN;
+			gpios = <&tlmm 22 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-5 {
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_USB;
+			gpios = <&tlmm 38 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-6 {
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_WLAN_5GHZ;
+			gpios = <&tlmm 39 GPIO_ACTIVE_HIGH>;
+		};
+	};
+
+	buttons {
+		compatible = "gpio-keys";
+		pinctrl-0 = <&button_pins>;
+		pinctrl-names = "default";
+
+		button-reset {
+			debounce-interval = <60>;
+			gpios = <&tlmm 25 GPIO_ACTIVE_LOW>;
+			label = "reset";
+			linux,code = <KEY_RESTART>;
+		};
+
+		button-wps {
+			debounce-interval = <60>;
+			gpios = <&tlmm 31 GPIO_ACTIVE_LOW>;
+			label = "wps";
+			linux,code = <KEY_WPS_BUTTON>;
+		};
+	};
+};
+
+&blsp1_uart1 {
+	pinctrl-0 = <&uart_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
+&sleep_clk {
+	clock-frequency = <32000>;
+};
+
+&tlmm {
+	button_pins: button-pins-state {
+		pins = "gpio25", "gpio31";
+		function = "gpio";
+		drive-strength = <8>;
+		bias-pull-up;
+	};
+
+	led_pins: led-pins-state {
+		pins = "gpio10", "gpio11", "gpio13", "gpio18", "gpio22",
+		       "gpio38", "gpio39";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
+	uart_pins: uart-pins-state {
+		pins = "gpio20", "gpio21";
+		function = "blsp0_uart0";
+		drive-strength = <8>;
+		bias-disable;
+	};
+};
+
+&xo_board_clk {
+	clock-frequency = <24000000>;
+};

-- 
2.44.0