uart2 is used in Arduino UnoQ as an interface between microprocessor and
microcontroller.

Signed-off-by: Riccardo Mereu <r.mereu@arduino.cc>
---
 arch/arm64/boot/dts/qcom/agatti.dtsi | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/agatti.dtsi b/arch/arm64/boot/dts/qcom/agatti.dtsi
index 8bf5c5583fc2..32d58e66f57d 100644
--- a/arch/arm64/boot/dts/qcom/agatti.dtsi
+++ b/arch/arm64/boot/dts/qcom/agatti.dtsi
@@ -562,6 +562,13 @@ qup_uart1_default: qup-uart1-default-state {
 				bias-disable;
 			};
 
+			qup_uart2_default: qup-uart2-default-state {
+				pins = "gpio6", "gpio7", "gpio71", "gpio80";
+				function = "qup2";
+				drive-strength = <2>;
+				bias-disable;
+			};
+
 			qup_uart3_default: qup-uart3-default-state {
 				pins = "gpio8", "gpio9", "gpio10", "gpio11";
 				function = "qup3";
@@ -1315,6 +1322,23 @@ &qup_virt SLAVE_QUP_CORE_0 RPM_ALWAYS_TAG>,
 				status = "disabled";
 			};
 
+			uart2: serial@4a88000 {
+                                compatible = "qcom,geni-uart";
+                                reg = <0x0 0x04a88000 0x0 0x4000>;
+                                interrupts = <GIC_SPI 329 IRQ_TYPE_LEVEL_HIGH>;
+                                clocks = <&gcc GCC_QUPV3_WRAP0_S2_CLK>;
+                                clock-names = "se";
+                                pinctrl-0 = <&qup_uart2_default>;
+                                pinctrl-names = "default";
+                                interconnects = <&qup_virt MASTER_QUP_CORE_0 RPM_ALWAYS_TAG
+                                                 &qup_virt SLAVE_QUP_CORE_0 RPM_ALWAYS_TAG>,
+                                                <&bimc MASTER_APPSS_PROC RPM_ALWAYS_TAG
+                                                 &config_noc MASTER_APPSS_PROC RPM_ALWAYS_TAG>;
+                                interconnect-names = "qup-core",
+                                                     "qup-config";
+                                status = "disabled";
+                        };
+
 			i2c3: i2c@4a8c000 {
 				compatible = "qcom,geni-i2c";
 				reg = <0x0 0x04a8c000 0x0 0x4000>;
-- 
2.51.2

On Thu, Nov 06, 2025 at 04:31:18PM +0100, Riccardo Mereu wrote:
> uart2 is used in Arduino UnoQ as an interface between microprocessor and
> microcontroller.
> 
> Signed-off-by: Riccardo Mereu <r.mereu@arduino.cc>
> ---
>  arch/arm64/boot/dts/qcom/agatti.dtsi | 24 ++++++++++++++++++++++++
>  1 file changed, 24 insertions(+)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>


-- 
With best wishes
Dmitry

On 11/6/25 4:31 PM, Riccardo Mereu wrote:
> uart2 is used in Arduino UnoQ as an interface between microprocessor and
> microcontroller.
> 
> Signed-off-by: Riccardo Mereu <r.mereu@arduino.cc>
> ---

Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>

Konrad