MTK_UART_RX_SIZE   53 drivers/tty/serial/8250/8250_mtk.c #define MTK_UART_RX_TRIGGER	MTK_UART_RX_SIZE
MTK_UART_RX_SIZE  473 drivers/tty/serial/8250/8250_mtk.c 		data->dma->rx_size = MTK_UART_RX_SIZE;