MSM_UART_MR1_RX_RDY_CTL
mr &= ~MSM_UART_MR1_RX_RDY_CTL;
mr &= ~MSM_UART_MR1_RX_RDY_CTL;
mr |= MSM_UART_MR1_RX_RDY_CTL;
mr &= ~(MSM_UART_MR1_CTS_CTL | MSM_UART_MR1_RX_RDY_CTL);
mr |= MSM_UART_MR1_RX_RDY_CTL;