stm32_usart_info
struct stm32_usart_info *info = port->private_data;
static struct stm32_usart_info __maybe_unused stm32f4_info = {
static struct stm32_usart_info __maybe_unused stm32f7_info = {
static struct stm32_usart_info __maybe_unused stm32h7_info = {
const struct stm32_usart_info *info;