tests: drivers: build_all: stepper: add uart configuration for tmc51xx

Now added a node to test builds with tmc51xx on uart.

Signed-off-by: Dipak Shetty <[email protected]>

Author: dipakgmx

tests/drivers/build_all/stepper/app.overlay

@@ -31,5 +31,13 @@
 
 			#include "spi.dtsi"
 		};
+
+		test_uart: uart@55556666 {
+			compatible = "vnd,serial";
+			reg = <0x55556666 0x1000>;
+			status = "okay";
+
+			#include "uart.dtsi"
+		};
 	};
 };

tests/drivers/build_all/stepper/prj.conf

@@ -4,5 +4,6 @@ CONFIG_LOG=y
 CONFIG_STEPPER_LOG_LEVEL_DBG=y
 CONFIG_GPIO=y
 CONFIG_SPI=y
+CONFIG_SERIAL=y
 CONFIG_STEPPER=y
 CONFIG_EMUL=y

tests/drivers/build_all/stepper/spi.dtsi

@@ -124,7 +124,7 @@ adi_tmc51xx_1: adi_tmc51xx@1 {
 adi_tmc51xx_2: adi_tmc51xx@2 {
 	compatible = "adi,tmc51xx";
 	status = "okay";
-	reg = <0x01>;
+	reg = <0x02>;
 	spi-max-frequency = <8000000>;
 	label = "tmc5160_2";
 

tests/drivers/build_all/stepper/uart.dtsi

@@ -0,0 +1,44 @@
+/*
+ * SPDX-FileCopyrightText: Copyright (c) 2025 Dipak Shetty
+ * SPDX-License-Identifier: Apache-2.0
+ */
+/****************************************
+ * PLEASE KEEP REG ADDRESSES SEQUENTIAL *
+ ***************************************/
+
+adi_tmc51xx_uart: adi_tmc51xx {
+	compatible = "adi,tmc51xx";
+	status = "okay";
+
+	label = "tmc5160_uart_1";
+
+	en-pwm-mode; test-mode; /* ADI TMC Global configuration flags */
+	clock-frequency = <16000000>; /* Internal/External Clock frequency */
+
+	/* common stepper controller settings */
+	invert-direction;
+	micro-step-res = <256>;
+
+	/* ADI TMC stallguard settings specific to TMC5160 */
+	activate-stallguard2;
+	stallguard-velocity-check-interval-ms = <100>;
+	stallguard2-threshold = <9>;
+	stallguard-threshold-velocity = <50000>;
+
+	/* ADI TMC ramp generator as well as current settings */
+	vstart = <10>;
+	a1 = <20>;
+	v1 = <30>;
+	d1 = <40>;
+	vmax = <50>;
+	amax = <60>;
+	dmax = <70>;
+	tzerowait = <80>;
+	thigh = <90>;
+	tcoolthrs = <100>;
+	tpwmthrs = <110>;
+	tpowerdown = <120>;
+	ihold = <1>;
+	irun = <2>;
+	iholddelay = <3>;
+};