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linux/drivers/tty/serial
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Matthew Howell 5fdbe136ae serial: exar: Fix GPIO configuration for Sealevel cards based on XR17V35X 
Sealevel XR17V35X based devices are inoperable on kernel versions
4.11 and above due to a change in the GPIO preconfiguration introduced in
commit
7dea8165f1. This patch fixes this by preconfiguring the GPIO on Sealevel
cards to the value (0x00) used prior to commit 7dea8165f1

With GPIOs preconfigured as per commit 7dea8165f1 all ports on
Sealevel XR17V35X based devices become stuck in high impedance
mode, regardless of dip-switch or software configuration. This
causes the device to become effectively unusable. This patch (in
various forms) has been distributed to our customers and no issues
related to it have been reported.

Fixes: 7dea8165f1 ("serial: exar: Preconfigure xr17v35x MPIOs as output")
Signed-off-by: Matthew Howell <matthew.howell@sealevel.com>
Link: https://lore.kernel.org/r/alpine.DEB.2.21.2007221605270.13247@tstest-VirtualBox
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-24 10:58:14 +02:00
..
8250 serial: exar: Fix GPIO configuration for Sealevel cards based on XR17V35X 2020-07-24 10:58:14 +02:00
cpm_uart tty: serial: cpm_uart: Fix behaviour for non existing GPIOs 2020-06-27 13:50:51 +02:00
jsm tty: serial: Use the correct style for SPDX License Identifier 2020-03-07 09:52:01 +01:00
21285.c tty: serial: 21285: stop using the unused[] variable from struct uart_port 2019-12-19 20:10:28 +01:00
altera_jtaguart.c
altera_uart.c
amba-pl010.c tty/serial: Migrate amba-pl01* to use has_sysrq 2019-12-18 15:04:44 +01:00
amba-pl011.c TTY/Serial driver updates for 5.8-rc1 2020-06-07 09:52:36 -07:00
amba-pl011.h
apbuart.c tty/serial: Migrate apbuart to use has_sysrq 2019-12-18 15:04:44 +01:00
apbuart.h
ar933x_uart.c serial: Allow uart_get_rs485_mode() to return errno 2020-05-15 14:47:05 +02:00
arc_uart.c tty/serial: Migrate arc_uart to use has_sysrq 2019-12-18 15:04:45 +01:00
atmel_serial.c serial: Allow uart_get_rs485_mode() to return errno 2020-05-15 14:47:05 +02:00
atmel_serial.h tty: serial: Use the correct style for SPDX License Identifier 2020-03-07 09:52:01 +01:00
bcm63xx_uart.c Revert "tty: serial: bcm63xx: fix missing clk_put() in bcm63xx_uart" 2020-05-04 11:49:57 +02:00
clps711x.c tty/serial: Migrate clps711x to use has_sysrq 2019-12-18 15:04:46 +01:00
digicolor-usart.c
dz.c TTY/Serial driver updates for 5.6-rc1 2020-01-29 10:13:27 -08:00
dz.h
earlycon-arm-semihost.c
earlycon-riscv-sbi.c
earlycon.c serial: earlycon: prefer EARLYCON_DECLARE() variant 2020-03-07 09:52:01 +01:00
efm32-uart.c tty: serial: efm32: fix spelling mistake "reserverd" -> "reserved" 2020-02-19 11:38:58 +01:00
fsl_linflexuart.c tty/serial: Migrate fsl_linflexuart to use has_sysrq 2019-12-18 15:04:48 +01:00
fsl_lpuart.c tty: serial: fsl_lpuart: Use __maybe_unused instead of #if CONFIG_PM_SLEEP 2020-05-15 15:46:29 +02:00
icom.c tty: serial: Remove call to memset after pci_alloc_consistent 2019-09-04 12:43:44 +02:00
icom.h tty: serial: Use the correct style for SPDX License Identifier 2020-03-07 09:52:01 +01:00
ifx6x60.c tty: serial: ifx6x60: Convert to GPIO descriptors 2020-03-12 10:03:54 +01:00
ifx6x60.h tty: serial: ifx6x60: Convert to GPIO descriptors 2020-03-12 10:03:54 +01:00
imx.c tty: serial: imx: clear Ageing Timer Interrupt in handler 2020-05-29 13:00:54 +02:00
ip22zilog.c tty/serial: Migrate ip22zilog to use has_sysrq 2019-12-18 15:04:50 +01:00
ip22zilog.h
Kconfig treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
kgdb_nmi.c kdb: Switch to use safer dbg_io_ops over console APIs 2020-06-26 15:40:16 +01:00
kgdboc.c kdb: Switch to use safer dbg_io_ops over console APIs 2020-06-26 15:40:16 +01:00
lantiq.c serial: lantiq: Make driver modular 2020-05-15 12:22:19 +02:00
lpc32xx_hs.c serial: lpc32xx_hs: Drop surplus include 2020-04-16 16:12:33 +02:00
Makefile {tty: serial, nand: onenand}: samsung: rename to fix build warning 2019-11-18 18:49:11 +01:00
max310x.c serial: max310x: turn off transmitter before activating AutoCTS or auto transmitter flow control 2019-09-05 09:57:44 +02:00
max3100.c
mcf.c
men_z135_uart.c drivers: mcb: use symbol namespaces 2019-11-03 19:54:53 +01:00
meson_uart.c TTY/Serial driver updates for 5.6-rc1 2020-01-29 10:13:27 -08:00
milbeaut_usio.c tty/serial: Migrate milbeaut_usio to use has_sysrq 2019-12-18 15:04:51 +01:00
mpc52xx_uart.c tty/serial: mpc52xx_uart: Don't zero port->sysrq 2019-12-18 15:04:52 +01:00
mps2-uart.c
msm_serial.c tty: serial: msm_serial: RX SW/FIFO mode fallback 2020-01-14 14:07:51 +01:00
mux.c TTY/Serial driver updates for 5.6-rc1 2020-01-29 10:13:27 -08:00
mvebu-uart.c tty:serial:mvebu-uart:fix a wrong return 2020-03-05 21:26:34 +01:00
mxs-auart.c serial: mxs-auart: add missed iounmap() in probe failure and remove 2020-07-10 14:44:46 +02:00
omap-serial.c serial: Allow uart_get_rs485_mode() to return errno 2020-05-15 14:47:05 +02:00
owl-uart.c tty: serial: owl: add "much needed" clk_prepare_enable() 2020-04-23 15:46:30 +02:00
pch_uart.c tty: serial: pch_uart: Use scnprintf() for avoiding potential buffer overflow 2020-03-18 12:59:29 +01:00
pic32_uart.c serial: pic32_uart: Use uart_console() helper 2020-03-12 10:00:22 +01:00
pic32_uart.h tty: serial: Use the correct style for SPDX License Identifier 2020-03-07 09:52:01 +01:00
pmac_zilog.c tty/serial: Migrate pmac_zilog to use has_sysrq 2019-12-18 15:04:56 +01:00
pmac_zilog.h
pnx8xxx_uart.c tty/serial: Migrate pnx8xxx_uart to use has_sysrq 2019-12-18 15:04:57 +01:00
pxa.c tty/serial: Migrate pxa to use has_sysrq 2019-12-18 15:04:57 +01:00
qcom_geni_serial.c TTY/Serial driver updates for 5.8-rc1 2020-06-07 09:52:36 -07:00
rda-uart.c remove ioremap_nocache and devm_ioremap_nocache 2020-01-06 09:45:59 +01:00
rp2.c
sa1100.c tty/serial: Migrate sa1100 to use has_sysrq 2019-12-18 15:04:59 +01:00
samsung_tty.c tty: serial: samsung: Correct clock selection logic 2020-05-15 12:24:15 +02:00
sb1250-duart.c TTY/Serial driver updates for 5.6-rc1 2020-01-29 10:13:27 -08:00
sc16is7xx.c sc16is7xx: Add flag to activate IrDA mode 2020-05-29 12:42:56 +02:00
sccnxp.c tty/serial: Migrate sccnxp to use has_sysrq 2019-12-18 15:05:00 +01:00
serial-tegra.c serial: tegra: drop bogus NULL tty-port checks 2020-07-21 20:59:38 +02:00
serial_core.c serial: core: Initialise spin lock before use in uart_configure_port() 2020-07-10 14:44:46 +02:00
serial_mctrl_gpio.c serial: mctrl_gpio: Check for NULL pointer 2019-10-07 13:21:54 +02:00
serial_mctrl_gpio.h tty: serial: Use the correct style for SPDX License Identifier 2020-03-07 09:52:01 +01:00
serial_txx9.c tty/serial: Migrate serial_txx9 to use has_sysrq 2019-12-18 15:05:01 +01:00
sh-sci.c serial: sh-sci: Initialize spinlock for uart console 2020-07-03 10:40:34 +02:00
sh-sci.h serial: sh-sci: Drop unused include 2020-04-16 16:13:34 +02:00
sifive.c tty: serial: add missing spin_lock_init for SiFive serial console 2020-05-15 14:55:10 +02:00
sirfsoc_uart.c
sirfsoc_uart.h tty: serial: Use the correct style for SPDX License Identifier 2020-03-07 09:52:01 +01:00
sprd_serial.c serial: sprd: remove redundant sprd_port cleanup 2020-03-18 12:20:04 +01:00
st-asc.c tty: st-asc: switch to using devm_gpiod_get() 2020-01-10 14:01:33 +01:00
stm32-usart.c serial: stm32: add no_console_suspend support 2020-05-19 15:53:36 +02:00
stm32-usart.h tty: serial: Add modem control gpio support for STM32 UART 2020-05-15 12:24:15 +02:00
suncore.c
sunhv.c serial: sunhv: Initialize lock for non-registered console 2020-04-16 16:16:52 +02:00
sunsab.c tty/serial: Migrate sunsab to use has_sysrq 2019-12-18 15:05:05 +01:00
sunsab.h
sunsu.c tty/serial: Migrate sunsu to use has_sysrq 2019-12-18 15:05:06 +01:00
sunzilog.c tty/serial: Migrate sunzilog to use has_sysrq 2019-12-18 15:05:08 +01:00
sunzilog.h
tegra-tcu.c
timbuart.c
timbuart.h tty: serial: Use the correct style for SPDX License Identifier 2020-03-07 09:52:01 +01:00
uartlite.c Revert "serial-uartlite: Move the uart register" 2019-11-14 06:29:08 +08:00
ucc_uart.c ARM: SoC-related driver updates 2020-02-08 14:04:19 -08:00
vr41xx_siu.c tty/serial: Migrate vr41xx_siu to use has_sysrq 2019-12-18 15:05:09 +01:00
vt8500_serial.c tty/serial: Migrate vt8500_serial to use has_sysrq 2019-12-18 15:05:09 +01:00
xilinx_uartps.c tty: xilinx_uartps: Really fix id assignment 2020-07-21 18:12:03 +02:00
zs.c TTY/Serial driver updates for 5.6-rc1 2020-01-29 10:13:27 -08:00
zs.h