arch: arm64: dts: ti: Enable slb9670 TPM on k3-am623-pfc-750-8400

TPM support is required for secure key storage and platform integrity features. Enabling the slb9670 node ensures the TPM is available for system use on this board variant. Signed-off-by: Heinrich Toews <ht@twx-software.de>
arm64: dts: ti: Move default UART4 RTS GPIO to common board DTSI
2026-06-18 12:33:10 +02:00 · 2026-06-18 12:33:10 +02:00 · 2026-06-18 12:33:10 +02:00 · 2026-06-18 12:33:10 +02:00 · 2026-06-18 12:33:10 +02:00 · 2026-06-18 12:33:10 +02:00
13 changed files with 79 additions and 32 deletions
@@ -27,13 +27,14 @@ dtb-$(CONFIG_ARCH_K3) += k3-am623-pfc-750-8302.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am623-pfc-750-830x-ems.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am623-pfc-750-8400.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am623-spehvac.dtb
-dtb-$(CONFIG_ARCH_K3) += overlay-750-8400-wosm-p0000042.dtbo \
+dtb-$(CONFIG_ARCH_K3) += overlay-750-8400-wosm-p0004037.dtbo \
 	overlay-750-8400-wosm-p0004263.dtbo \
-	overlay-750-8400-base-p0000017.dtbo \
+	overlay-750-8400-base-p0003964.dtbo \
 	overlay-750-8400-base-p0004305.dtbo \
-	overlay-750-8400-localbus-p0000007.dtbo \
+	overlay-750-8400-base-p0004224.dtbo \
+	overlay-750-8400-localbus-p0003978.dtbo \
 	overlay-750-8400-localbus-p0004067.dtbo \
-	overlay-750-8400-interaction-p0000031.dtbo \
+	overlay-750-8400-interaction-p0003965.dtbo \
 	overlay-750-8400-interaction-p0004065.dtbo

 # Boards with AM62Ax SoC
@@ -32,9 +32,9 @@
            };
        };

-        img-overlay-PFC-750-840x-wosm-p0000042 {
+        img-overlay-PFC-750-840x-wosm-p0004037 {
            description = "WOSM Overlay";
-            data = /incbin/("overlay-750-8400-wosm-p0000042.dtbo");
+            data = /incbin/("overlay-750-8400-wosm-p0004037.dtbo");
            type = "flat_dt";
            arch = "arm64";
            compression = "none";
@@ -49,15 +49,23 @@
            compression = "none";
        };

-        img-overlay-PFC-750-840x-base-p0000017 {
+        img-overlay-PFC-750-840x-base-p0003964 {
            description = "Base Overlay";
-            data = /incbin/("overlay-750-8400-base-p0000017.dtbo");
+            data = /incbin/("overlay-750-8400-base-p0003964.dtbo");
            type = "flat_dt";
            arch = "arm64";
            compression = "none";

        };

+        img-overlay-PFC-750-840x-base-p0004224 {
+            description = "Base Overlay p0004224";
+            data = /incbin/("overlay-750-8400-base-p0004224.dtbo");
+            type = "flat_dt";
+            arch = "arm64";
+            compression = "none";
+        };
+
        img-overlay-PFC-750-840x-base-p0004305 {
            description = "Base Overlay p0004305";
            data = /incbin/("overlay-750-8400-base-p0004305.dtbo");
@@ -66,9 +74,9 @@
            compression = "none";
        };

-        img-overlay-PFC-750-840x-localbus-p0000007 {
+        img-overlay-PFC-750-840x-localbus-p0003978 {
            description = "Localbus Overlay";
-            data = /incbin/("overlay-750-8400-localbus-p0000007.dtbo");
+            data = /incbin/("overlay-750-8400-localbus-p0003978.dtbo");
            type = "flat_dt";
            arch = "arm64";
            compression = "none";
@@ -83,9 +91,9 @@
            compression = "none";
        };

-        img-overlay-PFC-750-840x-interaction-p0000031 {
+        img-overlay-PFC-750-840x-interaction-p0003965 {
            description = "Interaction Overlay";
-            data = /incbin/("overlay-750-8400-interaction-p0000031.dtbo");
+            data = /incbin/("overlay-750-8400-interaction-p0003965.dtbo");
            type = "flat_dt";
            arch = "arm64";
            compression = "none";
@@ -109,42 +117,47 @@
            fdt = "fdt-PFC-750-840x";
        };

-        overlay-PFC-750-840x-wosm-p0000042 {
+        ovl-750-840x-wosm-p0004037 {
            description = "WOSM Overlay config";
-            fdt = "img-overlay-PFC-750-840x-wosm-p0000042";
+            fdt = "img-overlay-PFC-750-840x-wosm-p0004037";
        };

-        overlay-PFC-750-840x-wosm-p0004263 {
+        ovl-750-840x-wosm-p0004263 {
            description = "WOSM Overlay p0004263 config";
            fdt = "img-overlay-PFC-750-840x-wosm-p0004263";
        };

-        overlay-PFC-750-840x-base-p0000017 {
+        ovl-750-840x-base-p0003964 {
            description = "Base Overlay config";
-            fdt = "img-overlay-PFC-750-840x-base-p0000017";
+            fdt = "img-overlay-PFC-750-840x-base-p0003964";
        };

-        overlay-PFC-750-840x-base-p0004305 {
+        ovl-750-840x-base-p0004224 {
+            description = "Base Overlay p0004224 config";
+            fdt = "img-overlay-PFC-750-840x-base-p0004224";
+        };
+
+        ovl-750-840x-base-p0004305 {
            description = "Base Overlay p0004305 config";
            fdt = "img-overlay-PFC-750-840x-base-p0004305";
        };

-        overlay-PFC-750-840x-localbus-p0000007 {
+        ovl-750-840x-localbus-p0003978 {
            description = "Localbus Overlay config";
-            fdt = "img-overlay-PFC-750-840x-localbus-p0000007";
+            fdt = "img-overlay-PFC-750-840x-localbus-p0003978";
        };

-        overlay-PFC-750-840x-localbus-p0004067 {
+        ovl-750-840x-localbus-p0004067 {
            description = "Localbus Overlay p0004067 config";
            fdt = "img-overlay-PFC-750-840x-localbus-p0004067";
        };

-        overlay-PFC-750-840x-interaction-p0000031 {
+        ovl-750-840x-interaction-p0003965 {
            description = "Interaction Overlay config";
-            fdt = "img-overlay-PFC-750-840x-interaction-p0000031";
+            fdt = "img-overlay-PFC-750-840x-interaction-p0003965";
        };

-        overlay-PFC-750-840x-interaction-p0004065 {
+        ovl-750-840x-interaction-p0004065 {
            description = "Interaction Overlay p0004065 config";
            fdt = "img-overlay-PFC-750-840x-interaction-p0004065";
        };
@@ -81,6 +81,10 @@
 	board,variant = "pfc400";
 };

+&slb9670 {
+	status = "okay";
+};
+
 &main_spi2 {
 	ti,spi-num-cs = <4>;

@@ -40,15 +40,13 @@
 		interrupt-parent = <&main_gpio0>;
 		interrupts = <13 IRQ_TYPE_EDGE_FALLING>;

-		microchip,single-led-mode;
-
 		ports {
 			#address-cells = <1>;
 			#size-cells = <0>;

 			port@0 {
 				reg = <0>;
-				label = "ethX3";
+				label = "ethX1";
 				phy-mode = "internal";
 			};

@@ -60,19 +58,19 @@

 			port@2 {
 				reg = <2>;
-				label = "ethX1";
+				label = "ethX3";
 				phy-mode = "internal";
 			};

 			port@3 {
 				reg = <3>;
-				label = "ethEM";
+				label = "ethX4";
 				phy-mode = "internal";
 			};

 			port@4 {
 				reg = <4>;
-				label = "ethX4";
+				label = "ethEM";
 				phy-mode = "internal";
 			};

@@ -94,7 +94,7 @@
 		regulators {
 			buck1_30_reg: buck1 {
 				regulator-name = "VDD_CORE";
-				regulator-min-microvolt = <750000>;
+				regulator-min-microvolt = <850000>;
 				regulator-max-microvolt = <850000>;
 				regulator-boot-on;
 				regulator-always-on;
@@ -286,6 +286,7 @@
 	status = "okay";
 	pinctrl-names = "default";
 	pinctrl-0 = <&main_uart4_pins_default>;
+	rts-gpios = <&main_gpio0 38 GPIO_ACTIVE_HIGH>;
 };

 &main_i2c0 { /* type label */
@@ -32,7 +32,6 @@
 };

 &main_uart4 { /* RS485 Interface */
-	rts-gpios = <&main_gpio0 38 GPIO_ACTIVE_HIGH>;
 	/* RS485 termination is controlled via GPIO userspace tools */
 	rs485-rts-active-high;
 	linux,rs485-enabled-at-boot-time;
@@ -7,3 +7,9 @@
 #include <dt-bindings/leds/common.h>

 #include "k3-am623-pfc-750-84xx-baseboard.dtsi"
+
+&mcu_spi0 {
+	ksz9477@0 {
+		microchip,single-led-mode;
+	};
+};
@@ -0,0 +1,24 @@
+/dts-v1/;
+/plugin/;
+
+#include "k3-pinctrl.h"
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/leds/common.h>
+
+#include "k3-am623-pfc-750-84xx-baseboard.dtsi"
+
+&main_pmx0 {
+	main_uart4_pins_default: main-uart4-default-pins {
+		pinctrl-single,pins = <
+			AM62X_IOPAD(0x0b0, PIN_INPUT, 3) /* (K22) UART4_RXD */
+			AM62X_IOPAD(0x0b4, PIN_OUTPUT, 3) /* (K24) UART4_TXD */
+			AM62X_IOPAD(0x0098, PIN_OUTPUT_PULLDOWN, 7) /* (U23) GPIO0_37 (RS-DE) */
+		>;
+	};
+};
+
+&main_uart4 {
+	pinctrl-0 = <&main_uart4_pins_default>;
+	rts-gpios = <&main_gpio0 37 GPIO_ACTIVE_HIGH>;
+};
@@ -25,6 +25,7 @@

 &oms {
 	pinctrl-0 = <&oms_pins_default &oms_mcu_pins_default>;
+	poll-interval = <100>;

 	oms_run: run {
 		label = "RUN";
Author	SHA1	Message	Date
Heinrich Toews	8b8a65bcaf	arch: arm64: dts: ti: Enable slb9670 TPM on k3-am623-pfc-750-8400 TPM support is required for secure key storage and platform integrity features. Enabling the slb9670 node ensures the TPM is available for system use on this board variant. Signed-off-by: Heinrich Toews <ht@twx-software.de>	2026-06-18 12:33:10 +02:00
Heinrich Toews	29dfa20e98	arm64: dts: ti: Move default UART4 RTS GPIO to common board DTSI When an interaction overlay is loaded after a base overlay, its inclusion of k3-am623-pfc-rs485.dtsi overrides the baseboard-specific UART4 rts-gpios config back to GPIO0_38. Moving the default rts-gpios to the base common DTSI prevents this override, letting the active baseboard overlay (like p0004224 which uses GPIO0_37) cleanly configure its specific RTS routing. Signed-off-by: Heinrich Toews <ht@twx-software.de>	2026-06-18 12:33:10 +02:00
Heinrich Toews	627a7e301b	arm64: boot: fitImage: Add missing config for base-p0004224 U-Boot fails to load the baseboard overlay for PCB p0004224 at boot because the FIT image configuration node is missing. Adding this entry resolves the configuration name correctly and lets the bootloader apply the appropriate base overlay. Signed-off-by: Heinrich Toews <ht@twx-software.de>	2026-06-18 12:33:10 +02:00
Heinrich Toews	83f5383d6d	arm64: dts: ti: Fix UART4 pinmux reference in base overlay p0004224 The omap8250 driver fails to register main_uart4 because the base devicetree's phandle reference for 'pinctrl-0' is invalidated when the overlay redefines 'main_uart4_pins_default'. Explicitly assigning the pinctrl-0 property in the overlay ensures that the resolver updates the phandle to the newly overlay-defined node. Signed-off-by: Heinrich Toews <ht@twx-software.de>	2026-06-18 12:33:10 +02:00
Heinrich Toews	70839cbb07	arch: arm64: dts: ti: Add overlay for 750-8400 p0004224 RS485 DE fix Board revision p0004224 has a hardware bug with RS485 DE routed to the wrong pin (RS.DE instead of RS-2.DE). This overlay applies a workaround to enable correct RS485 operation on this revision. Future revision p0004305 resolves the issue in hardware, making this workaround unnecessary. Signed-off-by: Heinrich Toews <ht@twx-software.de>	2026-06-18 12:33:10 +02:00
Heinrich Toews	89151ac6be	arm64: dts: ti: Move single LED mode to specific baseboard overlay The newer p0004305 baseboard utilizes a dual-LED configuration on its Ethernet ports for link and activity signaling, making the global single-led-mode property counter-productive. DTC compiles separate label overrides inside DTBOs into disjoint fragments, causing dynamic compile-time /delete-property/ directives not to propagate across fragment boundaries. Decouple the single-led configuration from the shared dtsi by allocating it exclusively inside the legacy p0003964 baseboard overlay. Signed-off-by: Heinrich Toews <ht@twx-software.de>	2026-06-18 12:33:10 +02:00
Heinrich Toews	c057f5756e	arm64: dts: ti: Update board IDs for PFC400 revision 2 overlays To match the updated hardware identification numbers assigned to the revision 2 of the PFC400 board prototypes, the overlay filenames and their respective configurations in the Makefile and fitImage.its need to be updated. This ensures consistency between physical revision 2 boards and the compiled device-tree binaries. Signed-off-by: Heinrich Toews <ht@twx-software.de>	2026-06-18 12:33:10 +02:00
Heinrich Toews	b0b3420384	arm64: dts: ti: k3-am623-pfc-750-84xx: fix switch port labels (dirty) Ethernet switch port labels were incorrectly assigned, causing mismatch between physical port positions and their logical names. Swap labels to reflect the correct port-to-interface mapping: port@0->ethX1, port@2->ethX3, port@3->ethX4, port@4->ethEM. Signed-off-by: Heinrich Toews <ht@twx-software.de>	2026-06-18 12:33:10 +02:00
Heinrich Toews	1e37c680df	arm64: dts: ti: shorten FIT config nodes and add OMS poll interval The U-Boot extension string generation for overlay configurations exceeded the libfdt 31-character limit, causing failures during boot. Shorten the configuration node names in the FIT image to match the updated U-Boot logic. Additionally, add a poll interval to the OMS switch overlay to work around missing MCU GPIO interrupt routing. Signed-off-by: Heinrich Toews <ht@twx-software.de>	2026-06-18 12:33:10 +02:00
Heinrich Toews	d9e016a7ff	arm64: dts: ti: k3-am623-pfc-750-84xx: Fix VDD_CORE min voltage The minimum voltage for VDD_CORE was set to 750mV, which is below the actual operating range. Align it with the maximum of 850mV to reflect the correct and fixed voltage level for this regulator. Signed-off-by: Heinrich Toews <ht@twx-software.de>	2026-06-18 12:33:10 +02:00