ARM: dts: qcom: apq8064: add support to gsbi4 uart

This patch adds support to gsbi4 uart which is used in LG Mako.

Signed-off-by: David Heidelberg <david@ixit.cz>
Link: https://lore.kernel.org/r/20230814150040.64133-1-david@ixit.cz
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

Author: okias

arch/arm/boot/dts/qcom/qcom-apq8064-pins.dtsi

@@ -233,6 +233,22 @@
 		};
 	};
 
+	gsbi4_uart_pin_a: gsbi4-uart-pin-active-state {
+		rx-pins {
+			pins = "gpio11";
+			function = "gsbi4";
+			drive-strength = <2>;
+			bias-disable;
+		};
+
+		tx-pins {
+			pins = "gpio10";
+			function = "gsbi4";
+			drive-strength = <4>;
+			bias-disable;
+		};
+	};
+
 	gsbi6_uart_2pins: gsbi6_uart_2pins {
 		mux {
 			pins = "gpio14", "gpio15";

arch/arm/boot/dts/qcom/qcom-apq8064.dtsi

@@ -515,6 +515,18 @@
 			#size-cells = <1>;
 			ranges;
 
+			gsbi4_serial: serial@16340000 {
+				compatible = "qcom,msm-uartdm-v1.3", "qcom,msm-uartdm";
+				reg = <0x16340000 0x100>,
+				      <0x16300000 0x3>;
+				interrupts = <GIC_SPI 152 IRQ_TYPE_LEVEL_HIGH>;
+				pinctrl-0 = <&gsbi4_uart_pin_a>;
+				pinctrl-names = "default";
+				clocks = <&gcc GSBI4_UART_CLK>, <&gcc GSBI4_H_CLK>;
+				clock-names = "core", "iface";
+				status = "disabled";
+			};
+
 			gsbi4_i2c: i2c@16380000 {
 				compatible = "qcom,i2c-qup-v1.1.1";
 				pinctrl-0 = <&i2c4_pins>;