From: Simon Glass <sjg@chromium.org>
Date: Sun, 23 Jun 2024 20:30:23 +0000 (-0600)
Subject: am33xx: Provide a function to set up the debug UART
X-Git-Tag: v2025.01-rc5-pxa1908~431^2~8
X-Git-Url: http://git.dujemihanovic.xyz/html/static/%7B%7B%20.Permalink%20%7D%7D?a=commitdiff_plain;h=0fd4120fb535b22ca2ba94d9fe04d7e01557e38c;p=u-boot.git

am33xx: Provide a function to set up the debug UART

Since commit 0dba45864b2a ("arm: Init the debug UART") the debug UART is
set up in _main() before early_system_init() is called.

Add a suitable board_debug_uart_init() function to set up the UART in
SPL.

Signed-off-by: Simon Glass <sjg@chromium.org>
---

diff --git a/arch/arm/mach-omap2/am33xx/board.c b/arch/arm/mach-omap2/am33xx/board.c
index 78c1e965c9..84a60dedd7 100644
--- a/arch/arm/mach-omap2/am33xx/board.c
+++ b/arch/arm/mach-omap2/am33xx/board.c
@@ -490,9 +490,6 @@ void early_system_init(void)
 	 */
 	save_omap_boot_params();
 #endif
-#ifdef CONFIG_DEBUG_UART_OMAP
-	debug_uart_init();
-#endif
 
 #ifdef CONFIG_SPL_BUILD
 	spl_early_init();
@@ -533,3 +530,18 @@ static int am33xx_dm_post_init(void)
 	return 0;
 }
 EVENT_SPY_SIMPLE(EVT_DM_POST_INIT_F, am33xx_dm_post_init);
+
+#ifdef CONFIG_DEBUG_UART_BOARD_INIT
+void board_debug_uart_init(void)
+{
+	if (u_boot_first_phase()) {
+		hw_data_init();
+		set_uart_mux_conf();
+		setup_early_clocks();
+		uart_soft_reset();
+
+		/* avoid uart gibberish by allowing the clocks to settle */
+		mdelay(50);
+	}
+}
+#endif