stm32mp1: Allow to activate CONFIG_DEBUG_UART

[oweals/u-boot.git] / board / st / stm32mp1 / board.c

diff --git a/board/st/stm32mp1/board.c b/board/st/stm32mp1/board.c
index 956768f0447980d0894f6d8db2cac16a804211c3..5f31ea99f597d0ac0b02ce665250aafd066295ed 100644 (file)
--- a/board/st/stm32mp1/board.c
+++ b/board/st/stm32mp1/board.c
@@ -10,6 +10,33 @@
 #include <power/pmic.h>
 #include <power/stpmu1.h>
 
+#ifdef CONFIG_DEBUG_UART_BOARD_INIT
+void board_debug_uart_init(void)
+{
+#if (CONFIG_DEBUG_UART_BASE == STM32_UART4_BASE)
+
+#define RCC_MP_APB1ENSETR (STM32_RCC_BASE + 0x0A00)
+#define RCC_MP_AHB4ENSETR (STM32_RCC_BASE + 0x0A28)
+
+       /* UART4 clock enable */
+       setbits_le32(RCC_MP_APB1ENSETR, BIT(16));
+
+#define GPIOG_BASE 0x50008000
+       /* GPIOG clock enable */
+       writel(BIT(6), RCC_MP_AHB4ENSETR);
+       /* GPIO configuration for EVAL board
+        * => Uart4 TX = G11
+        */
+       writel(0xffbfffff, GPIOG_BASE + 0x00);
+       writel(0x00006000, GPIOG_BASE + 0x24);
+#else
+
+#error("CONFIG_DEBUG_UART_BASE: not supported value")
+
+#endif
+}
+#endif
+
 #ifdef CONFIG_PMIC_STPMU1
 int board_ddr_power_init(void)
 {