linux-stable/drivers/tty
Sherry Sun 96f54fd489 tty: serial: fsl_lpuart: Enable Receiver Idle Empty function for LPUART
With the growth of rx watermark, it's useful to enable the Receiver Idle
Empty function, it can assert the RDRF(Receive Data Register Full Flag)
when the receiver is idle for a number of idle characters and the FIFO
is not empty. It will generate a DMA request or interrupt, which can
avoid receive data being trapped in the RX FIFO since the number of
words received is less than the watermark.

Here set the RXIDEN as 0x3 which enable the RDRF assertion due to
partially filled FIFO when receiver is idle for 4 characters.

Signed-off-by: Sherry Sun <sherry.sun@nxp.com>
Link: https://lore.kernel.org/r/20230130064449.9564-5-sherry.sun@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-31 10:53:39 +01:00
..
hvc tty: Call ->dtr_rts() parameter active consistently 2023-01-19 16:04:35 +01:00
ipwireless
serdev
serial tty: serial: fsl_lpuart: Enable Receiver Idle Empty function for LPUART 2023-01-31 10:53:39 +01:00
vt VT: Bump font size limitation to 64x128 pixels 2023-01-19 16:29:01 +01:00
amiserial.c tty: Call ->dtr_rts() parameter active consistently 2023-01-19 16:04:35 +01:00
ehv_bytechan.c tty: evh_bytechan: Replace NO_IRQ by 0 2022-11-02 08:10:42 +01:00
goldfish.c
Kconfig tty: Allow TIOCSTI to be disabled 2022-11-03 01:58:03 +01:00
Makefile
mips_ejtag_fdc.c
moxa.c tty: moxa: Rename dtr/rts parameters/variables to active 2023-01-19 16:04:35 +01:00
mxser.c tty: Call ->dtr_rts() parameter active consistently 2023-01-19 16:04:35 +01:00
n_gsm.c tty: Call ->dtr_rts() parameter active consistently 2023-01-19 16:04:35 +01:00
n_hdlc.c tty: n_hdlc: remove HDLC_MAGIC 2022-09-22 16:12:34 +02:00
n_null.c
n_tty.c n_tty: Rename tail to old_tail in n_tty_read() 2022-11-22 17:51:34 +01:00
nozomi.c
pty.c tty: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
rpmsg_tty.c
synclink_gt.c tty: Call ->dtr_rts() parameter active consistently 2023-01-19 16:04:35 +01:00
sysrq.c treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
tty.h tty: Move sysctl setup into "core" tty logic 2022-11-03 01:58:03 +01:00
tty_audit.c
tty_baudrate.c tty: Fix comment style in tty_termios_input_baud_rate() 2022-08-30 14:22:34 +02:00
tty_buffer.c tty: Convert tty_buffer flags to bool 2022-11-09 13:02:16 +01:00
tty_io.c tty: fix out-of-bounds access in tty_driver_lookup_tty() 2023-01-19 15:04:56 +01:00
tty_ioctl.c tty: Return bool from tty_termios_hw_change() 2023-01-19 16:04:35 +01:00
tty_jobctrl.c
tty_ldisc.c tty: Move sysctl setup into "core" tty logic 2022-11-03 01:58:03 +01:00
tty_ldsem.c
tty_mutex.c tty: remove TTY_MAGIC 2022-09-22 16:12:34 +02:00
tty_port.c tty: Convert ->dtr_rts() to take bool argument 2023-01-19 16:04:35 +01:00
ttynull.c
vcc.c termios: start unifying non-UAPI parts of asm/termios.h 2022-09-09 10:44:34 +02:00