[PATCH 04/14] am33xx: Provide a function to set up the debug UART
Simon Glass
sjg at chromium.org
Sun Jun 23 22:30:23 CEST 2024
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 at chromium.org>
---
(no changes since v1)
arch/arm/mach-omap2/am33xx/board.c | 18 +++++++++++++++---
1 file changed, 15 insertions(+), 3 deletions(-)
diff --git a/arch/arm/mach-omap2/am33xx/board.c b/arch/arm/mach-omap2/am33xx/board.c
index 78c1e965c9f..84a60dedd72 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
--
2.34.1
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