linux/drivers/tty/serial
Fabien Lahoudere db0a196bd8 serial: imx: Add DMA buffer configuration via DT
In order to optimize serial communication (performance/throughput VS
latency), we may need to tweak DMA period number and size. This adds
DT properties to configure those values before initialising DMA.
The defaults will stay the same as before.

[update documentation and commit message, rebase to current master,
switch back to DT instead of sysfs]

Signed-off-by: Fabien Lahoudere <fabien.lahoudere@collabora.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20210430175038.103226-2-sebastian.reichel@collabora.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-06-04 15:11:16 +02:00
..
8250 Merge 5.13-rc4 into tty-next 2021-05-31 09:44:28 +02:00
cpm_uart tty: cpm_uart, use port->flags instead of low_latency 2021-01-07 16:17:31 +01:00
jsm Merge 5.12-rc6 into tty-next 2021-04-05 08:59:21 +02:00
21285.c tty: serial: 21285: fix lockup on open 2020-10-28 13:39:14 +01:00
altera_jtaguart.c serial: altera_jtaguart: drop low-latency workaround 2021-04-22 12:09:24 +02:00
altera_uart.c serial: altera_uart: drop low-latency workaround 2021-04-22 12:09:24 +02:00
amba-pl010.c serial: amba-pl010: drop low-latency workaround 2021-04-22 12:09:24 +02:00
amba-pl011.c serial: drop irq-flags initialisations 2021-05-20 16:24:05 +02:00
amba-pl011.h
apbuart.c serial: apbuart: drop low-latency workaround 2021-04-22 12:09:25 +02:00
apbuart.h
ar933x_uart.c serial: ar933x: drop low-latency workaround 2021-04-22 12:09:25 +02:00
arc_uart.c tty: cumulate and document tty_struct::flow* members 2021-05-13 16:57:16 +02:00
atmel_serial.c tty: serial: atmel: include <linux/io.h> instead of <asm/io.h> 2021-05-13 18:29:11 +02:00
atmel_serial.h
bcm63xx_uart.c serial: bcm63xx: drop low-latency workaround 2021-04-22 12:09:25 +02:00
clps711x.c
digicolor-usart.c
dz.c tty: serial: dz: include <linux/io.h> instead of <asm/io.h> 2021-05-13 18:29:11 +02:00
dz.h
earlycon-arm-semihost.c
earlycon-riscv-sbi.c
earlycon.c earlycon: simplify earlycon-table implementation 2020-12-04 15:49:48 +01:00
fsl_linflexuart.c tty: serial: linflexuart: Remove unnecessary '|' operation and add error count 2020-11-06 17:12:30 +01:00
fsl_lpuart.c serial: fsl_lpuart: disable DMA for console and fix sysrq 2021-05-13 16:08:26 +02:00
icom.c tty: serial: icom: include <linux/io.h> instead of <asm/io.h> 2021-05-13 18:29:11 +02:00
icom.h
imx_earlycon.c tty: serial: imx: add imx earlycon driver 2020-07-29 17:11:02 +02:00
imx.c serial: imx: Add DMA buffer configuration via DT 2021-06-04 15:11:16 +02:00
ip22zilog.c tty: serial: ip22zilog: include <linux/io.h> instead of <asm/io.h> 2021-05-13 18:29:12 +02:00
ip22zilog.h
Kconfig serial: liteuart: Add support for earlycon 2021-05-20 16:35:01 +02:00
kgdb_nmi.c serial: kgdb_nmi: remove redundant initialization of variable c 2021-05-20 16:22:09 +02:00
kgdboc.c
lantiq.c tty/serial/lantiq: convert comma to semicolon 2020-12-28 16:10:50 +01:00
liteuart.c serial: liteuart: Add support for earlycon 2021-05-20 16:35:01 +02:00
lpc32xx_hs.c serial: lpc32xx_hs: drop low-latency workaround 2021-04-22 12:09:25 +02:00
Makefile serial: ifx6x60: Remove driver for deprecated platform 2021-01-26 19:21:49 +01:00
max310x.c Merge 5.13-rc4 into tty-next 2021-05-31 09:44:28 +02:00
max3100.c tty_port: drop last traces of low_latency 2021-01-07 16:17:32 +01:00
mcf.c serial: mcf: drop low-latency workaround 2021-04-22 12:09:25 +02:00
men_z135_uart.c tty: serial, fix kernel-doc 2020-08-18 13:51:18 +02:00
meson_uart.c tty: serial: meson: retrieve port FIFO size from DT 2021-05-20 16:11:20 +02:00
milbeaut_usio.c
mpc52xx_uart.c serial: mpc52xx_uart: drop low-latency workaround 2021-04-22 12:09:25 +02:00
mps2-uart.c
msm_serial.c serial: msm_serial: drop low-latency workaround 2021-04-22 12:09:25 +02:00
mux.c tty: serial: mux: include <linux/io.h> instead of <asm/io.h> 2021-05-13 18:29:12 +02:00
mvebu-uart.c Revert "serial: mvebu-uart: Fix to avoid a potential NULL pointer dereference" 2021-05-13 17:30:04 +02:00
mxs-auart.c serial: mxs-auart: Remove <asm/cacheflush.h> 2021-01-20 18:48:19 +01:00
omap-serial.c serial: drop irq-flags initialisations 2021-05-20 16:24:05 +02:00
owl-uart.c serial: owl: drop low-latency workaround 2021-04-22 12:09:25 +02:00
pch_uart.c serial: pch_uart: fix build error with !CONFIG_DEBUG_FS 2021-03-23 10:31:09 +01:00
pic32_uart.c
pic32_uart.h
pmac_zilog.c tty: serial: pmac_zilog: include <linux/io.h> insteiad of <asm/io.h> 2021-05-13 18:29:12 +02:00
pmac_zilog.h tty: serial: pmac_zilog: Remove unused disposable variable 'garbage' 2020-11-13 15:28:27 +01:00
pxa.c
qcom_geni_serial.c serial: qcom_geni_serial: redundant initialization to variable line 2021-05-13 16:20:51 +02:00
rda-uart.c serial: rda: drop low-latency workaround 2021-04-22 12:09:26 +02:00
rp2.c serial: rp2: use 'request_firmware' instead of 'request_firmware_nowait' 2021-05-21 20:34:02 +02:00
sa1100.c serial: sa1100: drop low-latency workaround 2021-04-22 12:09:26 +02:00
samsung_tty.c tty: serial: samsung_tty: remove set but not used variables 2021-05-13 16:10:53 +02:00
sb1250-duart.c tty: serial: sb1250-duart: include <linux/io.h> instead of <asm/io.h> 2021-05-13 18:29:12 +02:00
sc16is7xx.c serial: sc16is7xx: Use devm_clk_get_optional() 2021-05-20 16:30:40 +02:00
sccnxp.c
serial_core.c Merge 5.13-rc4 into tty-next 2021-05-31 09:44:28 +02:00
serial_mctrl_gpio.c serial: mctrl_gpio: Fix passing zero to 'ERR_PTR' warning 2020-11-06 17:12:05 +01:00
serial_mctrl_gpio.h
serial_txx9.c tty: serial: txx9: include <linux/io.h> instead of <asm/io.h> 2021-05-13 18:29:12 +02:00
serial-tegra.c serial: tegra: Fix a mask operation that is always true 2021-05-13 17:07:43 +02:00
sh-sci.c Revert "serial: sh-sci: Add support for RZ/G2L SoC" 2021-05-21 20:29:38 +02:00
sh-sci.h Revert "serial: sh-sci: Add support for RZ/G2L SoC" 2021-05-21 20:29:38 +02:00
sifive.c serial: sifive: drop low-latency workaround 2021-04-22 12:09:26 +02:00
sprd_serial.c
st-asc.c tty: serial: st-asc: Demote a kernel-doc formatting abuse 2021-05-20 17:06:17 +02:00
stm32-usart.c serial: drop irq-flags initialisations 2021-05-20 16:24:05 +02:00
stm32-usart.h serial: stm32: add FIFO threshold configuration 2021-04-22 12:11:25 +02:00
suncore.c
sunhv.c
sunsab.c tty: serial: sunsab: include <linux/io.h> instead of <asm/io.h> 2021-05-13 18:29:12 +02:00
sunsab.h
sunsu.c tty: serial: sunsu: include <linux/io.h> instead of <asm/io.h> 2021-05-13 18:29:12 +02:00
sunzilog.c tty: serial: sunzilog: include <linux/io.h> instead of <asm/io.h> 2021-05-13 18:29:12 +02:00
sunzilog.h
tegra-tcu.c serial: Add missing MODULE_DEVICE_TABLE 2021-04-10 10:37:27 +02:00
timbuart.c serial: timbuart: drop low-latency workaround 2021-04-22 12:09:26 +02:00
timbuart.h
uartlite.c tty: serial: uartlite: Support probe deferral 2020-12-04 16:51:40 +01:00
ucc_uart.c tty: serial: ucc_uart: replace qe_io{read,write}* wrappers by generic io{read,write}* 2021-04-06 15:40:42 -05:00
vr41xx_siu.c tty: serial: vr41xx_siu: include <linux/io.h> instead of <asm/io.h> 2021-05-13 18:29:12 +02:00
vt8500_serial.c serial: vt8500: drop low-latency workaround 2021-04-22 12:09:26 +02:00
xilinx_uartps.c tty: serial: xilinx_uartps: Fix documentation for cdns_uart_clk_notifier_cb() 2021-05-20 17:06:17 +02:00
zs.c
zs.h