Add default STM32MP13xx debug UART initialization. This is similar to STM32MP15xx debug UART initialization, except the RCC registers are at different offsets and the UART pinmux pins are different.
Reviewed-by: Patrice Chotard <[email protected]> Reviewed-by: Patrick Delaunay <[email protected]> Signed-off-by: Marek Vasut <[email protected]> --- Cc: Cheick Traore <[email protected]> Cc: Fabrice Gasnier <[email protected]> Cc: Gatien Chevallier <[email protected]> Cc: Lionel Debieve <[email protected]> Cc: Pascal Zimmermann <[email protected]> Cc: Patrice Chotard <[email protected]> Cc: Patrick Delaunay <[email protected]> Cc: Simon Glass <[email protected]> Cc: Sughosh Ganu <[email protected]> Cc: Tom Rini <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] --- V2: Add RB from Patrice and Patrick --- board/st/stm32mp1/debug_uart.c | 21 ++++++++++++++++++--- 1 file changed, 18 insertions(+), 3 deletions(-) diff --git a/board/st/stm32mp1/debug_uart.c b/board/st/stm32mp1/debug_uart.c index 24e3f9f2201..4c2149e0480 100644 --- a/board/st/stm32mp1/debug_uart.c +++ b/board/st/stm32mp1/debug_uart.c @@ -9,17 +9,32 @@ #include <asm/arch/stm32.h> #include <linux/bitops.h> +#if IS_ENABLED(CONFIG_STM32MP13X) +#define RCC_MP_APB1ENSETR (STM32_RCC_BASE + 0x0700) +#define RCC_MP_AHB4ENSETR (STM32_RCC_BASE + 0x0768) +#elif IS_ENABLED(CONFIG_STM32MP15X) #define RCC_MP_APB1ENSETR (STM32_RCC_BASE + 0x0A00) #define RCC_MP_AHB4ENSETR (STM32_RCC_BASE + 0x0A28) +#endif +#define GPIOA_BASE 0x50002000 #define GPIOG_BASE 0x50008000 void board_debug_uart_init(void) { - if (CONFIG_DEBUG_UART_BASE == STM32_UART4_BASE) { - /* UART4 clock enable */ - setbits_le32(RCC_MP_APB1ENSETR, BIT(16)); + if (CONFIG_DEBUG_UART_BASE != STM32_UART4_BASE) + return; + /* UART4 clock enable */ + setbits_le32(RCC_MP_APB1ENSETR, BIT(16)); + + if (IS_ENABLED(CONFIG_STM32MP13X)) { + /* GPIOA clock enable */ + writel(BIT(0), RCC_MP_AHB4ENSETR); + /* GPIO configuration for DH boards: Uart4 TX = A9 */ + writel(0xfffbffff, GPIOA_BASE + 0x00); + writel(0x00000080, GPIOA_BASE + 0x24); + } else if (IS_ENABLED(CONFIG_STM32MP15X)) { /* GPIOG clock enable */ writel(BIT(6), RCC_MP_AHB4ENSETR); /* GPIO configuration for ST boards: Uart4 TX = G11 */ -- 2.47.2
