NRF54LM20DK SPIS00 not work

[Solen]

I'm testing the SPI-slave functionality based on the routine ncs/v3.3.0/zephyr/tests/drivers/spi/spi_controller_peripheral.

The original code uses the pins of SPIS21, but after I modified it to use the pins of SPIS00, SPIS00 fails to receive SPI data — the waveforms and hardware connections are normal.

Could you help check what the issue is? I've attached my modificatio3731.nrf54lm20dk_nrf54lm20a_cpuapp.overlayns.

Fullscreen spis00.diff Download

diff --git a/boards/nrf54lm20dk_nrf54lm20a_cpuapp.overlay b/boards/nrf54lm20dk_nrf54lm20a_cpuapp.overlay
index b02a2be..2995c01 100644
--- a/boards/nrf54lm20dk_nrf54lm20a_cpuapp.overlay
+++ b/boards/nrf54lm20dk_nrf54lm20a_cpuapp.overlay
@@ -5,10 +5,10 @@
  */
 
 /* Test requires following loopbacks:
- * SCK:  P1.23 - P1.24
- * MISO: P1.30 - P1.31
- * MOSI: P1.13 - P1.14
- * CS:   P1.03 - P1.04
+ * SCK:  P1.23 - P2.01
+ * MISO: P1.30 - P2.04
+ * MOSI: P1.13 - P2.02
+ * CS:   P1.03 - P2.05
  */
 
 &pinctrl {
@@ -29,21 +29,21 @@
 		};
 	};
 
-	spi21_default_alt: spi21_default_alt {
+	spi00_default_alt: spi00_default_alt {
 		group1 {
-			psels = <NRF_PSEL(SPIS_SCK, 1, 24)>,
-				<NRF_PSEL(SPIS_MISO, 1, 31)>,
-				<NRF_PSEL(SPIS_MOSI, 1, 14)>,
-				<NRF_PSEL(SPIS_CSN, 1, 4)>;
+			psels = <NRF_PSEL(SPIS_SCK, 2, 1)>,
+				<NRF_PSEL(SPIS_MISO, 2, 4)>,
+				<NRF_PSEL(SPIS_MOSI, 2, 2)>,
+				<NRF_PSEL(SPIS_CSN, 2, 5)>;
 		};
 	};
 
-	spi21_sleep_alt: spi21_sleep_alt {
+	spi00_sleep_alt: spi00_sleep_alt {
 		group1 {
-			psels = <NRF_PSEL(SPIS_SCK, 1, 24)>,
-				<NRF_PSEL(SPIS_MISO, 1, 31)>,
-				<NRF_PSEL(SPIS_MOSI, 1, 14)>,
-				<NRF_PSEL(SPIS_CSN, 1, 4)>;
+			psels = <NRF_PSEL(SPIS_SCK, 2, 1)>,
+				<NRF_PSEL(SPIS_MISO, 2, 4)>,
+				<NRF_PSEL(SPIS_MOSI, 2, 2)>,
+				<NRF_PSEL(SPIS_CSN, 2, 5)>;
 			low-power-enable;
 		};
 	};
@@ -53,6 +53,10 @@
 	status = "okay";
 };
 
+&gpio2 {
+	status = "okay";
+};
+
 &spi22 {
 	status = "okay";
 	pinctrl-0 = <&spi22_default_alt>;
@@ -69,13 +73,14 @@
 	};
 };
 
-dut_spis: &spi21 {
+dut_spis: &spi00 {
 	compatible = "nordic,nrf-spis";
 	status = "okay";
 	def-char = <0x00>;
-	pinctrl-0 = <&spi21_default_alt>;
-	pinctrl-1 = <&spi21_sleep_alt>;
+	pinctrl-0 = <&spi00_default_alt>;
+	pinctrl-1 = <&spi00_sleep_alt>;
 	pinctrl-names = "default", "sleep";
 	/delete-property/ rx-delay-supported;
 	/delete-property/ rx-delay;
+	/delete-property/ cs-gpios;
 };