Merge patch series "TI: AM64-EVM/SK: Enable MAIN UART1 for SYSFW tracing"

Vishal Mahaveer <vishalm@ti.com> says:

Collecting SYSFW traces from DMSC firmware is broken on the current
codebase. These changes enables MAIN_UART1 for collecting SYSFW traces
when the trace option is enabled in the boardcfg.

Link: https://lore.kernel.org/r/20260605193829.395161-1-vishalm@ti.com

arch/arm/dts/k3-am642-r5-evm.dts

@@ -23,3 +23,13 @@
 	clocks = <&clk_200mhz>;
 	clock-names = "clk_xin";
 };
+
+&main_uart1_pins_default {
+	bootph-pre-ram;
+};
+
+/* Main UART1 is used for TIFS firmware logs */
+&main_uart1 {
+	bootph-pre-ram;
+	status="okay";
+};

arch/arm/dts/k3-am642-r5-sk.dts

@@ -18,3 +18,13 @@
 &serdes_wiz0 {
 	status = "okay";
 };
+
+&main_uart1_pins_default {
+	bootph-pre-ram;
+};
+
+/* Main UART1 is used for TIFS firmware logs */
+&main_uart1 {
+	bootph-pre-ram;
+	status="okay";
+};

arch/arm/mach-k3/am64x/am642_init.c

@@ -212,14 +212,14 @@ void board_init_f(ulong dummy)
 
 #if defined(CONFIG_K3_LOAD_SYSFW)
 	/*
-	 * Process pinctrl for serial3 a.k.a. MAIN UART1 module and continue
+	 * Process pinctrl for serial1 a.k.a. MAIN UART1 module and continue
 	 * regardless of the result of pinctrl. Do this without probing the
 	 * device, but instead by searching the device that would request the
 	 * given sequence number if probed. The UART will be used by the system
 	 * firmware (SYSFW) image for various purposes and SYSFW depends on us
 	 * to initialize its pin settings.
 	 */
-	ret = uclass_find_device_by_seq(UCLASS_SERIAL, 3, &dev);
+	ret = uclass_find_device_by_seq(UCLASS_SERIAL, 1, &dev);
 	if (!ret)
 		pinctrl_select_state(dev, "default");