Add the node describing uart18 for sc8280xp devices.

Signed-off-by: Jérôme de Bretagne <jerome.debretagne@gmail.com>
---
 arch/arm64/boot/dts/qcom/sc8280xp.dtsi | 48 ++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
index 14c3b1d6ad47..1e520113db07 100644
--- a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
@@ -1013,6 +1013,24 @@ spi18: spi@888000 {
 				status = "disabled";
 			};
 
+			uart18: serial@888000 {
+				compatible = "qcom,geni-uart";
+				reg = <0 0x00888000 0 0x4000>;
+				clocks = <&gcc GCC_QUPV3_WRAP2_S2_CLK>;
+				clock-names = "se";
+				interrupts = <GIC_SPI 584 IRQ_TYPE_LEVEL_HIGH>;
+				operating-points-v2 = <&qup_opp_table_100mhz>;
+				power-domains = <&rpmhpd SC8280XP_CX>;
+				interconnects = <&clk_virt MASTER_QUP_CORE_2 0 &clk_virt SLAVE_QUP_CORE_2 0>,
+						<&gem_noc MASTER_APPSS_PROC 0 &config_noc SLAVE_QUP_2 0>;
+				interconnect-names = "qup-core", "qup-config";
+
+				pinctrl-0 = <&qup_uart18_default>;
+				pinctrl-names = "default";
+
+				status = "disabled";
+			};
+
 			i2c19: i2c@88c000 {
 				compatible = "qcom,geni-i2c";
 				reg = <0 0x0088c000 0 0x4000>;
@@ -4957,6 +4975,36 @@ cci3_i2c1_sleep: cci3-i2c1-sleep-pins {
 					bias-pull-down;
 				};
 			};
+
+			qup_uart18_default: qup-uart18-default-state {
+				cts-pins {
+					pins = "gpio66";
+					function = "qup18";
+					drive-strength = <2>;
+					bias-disable;
+				};
+
+				rts-pins {
+					pins = "gpio67";
+					function = "qup18";
+					drive-strength = <2>;
+					bias-disable;
+				};
+
+				tx-pins {
+					pins = "gpio68";
+					function = "qup18";
+					drive-strength = <2>;
+					bias-disable;
+				};
+
+				rx-pins {
+					pins = "gpio69";
+					function = "qup18";
+					drive-strength = <2>;
+					bias-disable;
+				};
+			};
 		};
 
 		apps_smmu: iommu@15000000 {
-- 
2.45.2