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Lukas Wunner 01c38ecff8 dt-bindings: serial: Add binding for rs485 bus termination GPIO 
Commit e8759ad17d41 ("serial: uapi: Add support for bus termination")
introduced the ability to enable rs485 bus termination from user space.
So far the feature is only used by a single driver, 8250_exar.c, using a
hardcoded GPIO pin specific to Siemens IOT2040 products.

Provide for a more generic solution by allowing specification of an
rs485 bus termination GPIO pin in the device tree.  An upcoming commit
implements support for this pin for any 8250 driver.  The binding is
used in device trees of the "Revolution Pi" PLCs offered by KUNBUS.

[Heiko Stuebner converted the binding to YAML, hence his Signed-off-by.]

Signed-off-by: Heiko Stuebner <heiko.stuebner@theobroma-systems.com>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Cc: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/4f4411895dc52c846f766e7f7207ec412c4811b6.1589811297.git.lukas@wunner.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-05-29 12:42:53 +02:00
..
ABI
change email address for Pali Rohár
2020-04-10 15:36:22 -07:00
accounting
doc: cgroup: improve formatting of references
2020-03-02 12:57:03 -07:00
admin-guide
tty/sysrq: constify the sysrq API
2020-05-15 14:53:19 +02:00
arm
docs: arm: tcm: Fix a few typos
2020-02-19 02:42:21 -07:00
arm64
Documentation: arm64: fix amu.rst doc warnings
2020-04-23 17:05:22 +01:00
block
block: Document genhd capability flags
2020-03-12 07:47:22 -06:00
bpf
bpf: lsm: Add Documentation
2020-03-30 01:35:12 +02:00
cdrom
docs: add some directories to the main documentation index
2019-07-15 11:03:03 -03:00
core-api
bpf: Restrict bpf_trace_printk()'s %s usage and add %pks, %pus specifier
2020-05-15 08:10:36 -07:00
cpu-freq
docs: cpu-freq: convert cpufreq-stats.txt to ReST
2020-03-06 00:01:02 +01:00
crypto
crypto: algapi - make unregistration functions return void
2019-12-20 14:58:35 +08:00
dev-tools
linux-kselftest-kunit-5.7-rc1
2020-04-01 16:11:40 -07:00
devicetree
dt-bindings: serial: Add binding for rs485 bus termination GPIO
2020-05-29 12:42:53 +02:00
doc-guide
Documentation: build warnings related to missing blank lines after explicit markups has been fixed
2020-02-05 10:30:03 -07:00
driver-api
A handful of late-arriving fixes for the documentation tree.
2020-04-10 17:53:43 -07:00
fault-injection
docs: add some directories to the main documentation index
2019-07-15 11:03:03 -03:00
fb
fbdev: fbmem: allow overriding the number of bootup logos
2020-01-03 14:27:40 +01:00
features
documentation: vm: Advertise support for pte_special in riscv
2020-02-19 02:41:01 -07:00
filesystems
debugfs: remove return value of debugfs_create_u32()
2020-04-17 17:08:50 +02:00
firmware_class
…
firmware-guide
Documentation: firmware-guide: ACPI: fix table alignment in namespace.rst
2020-04-08 14:27:48 +02:00
fpga
Documentation: fpga: dfl: add descriptions for thermal/power management interfaces
2019-10-16 19:18:26 -07:00
gpu
UAPI Changes:
2020-03-19 10:40:27 +10:00
hid
docs: add some documentation dirs to the driver-api book
2019-07-15 11:03:02 -03:00
hwmon
hwmon: (pmbus/isl68137) Fix up chip IDs
2020-04-12 15:12:51 -07:00
i2c
i2c: convert SMBus alert setup function to return an ERRPTR
2020-03-10 12:19:52 +01:00
ia64
docs: add SPDX tags to new index files
2019-07-15 11:03:03 -03:00
ide
docs: add some directories to the main documentation index
2019-07-15 11:03:03 -03:00
iio
docs: add some documentation dirs to the driver-api book
2019-07-15 11:03:02 -03:00
infiniband
Documentation/infiniband: update name of some functions
2019-09-13 16:55:55 -03:00
input
Input: docs: fix spelling mistake "potocol" -> "protocol"
2019-08-06 11:24:49 -06:00
isdn
isdn: capi: dead code removal
2019-12-11 09:12:38 +01:00
kbuild
Documentation: kbuild: fix the section title format
2020-04-23 10:53:19 +09:00
kernel-hacking
docs: locking: Drop :c:func: throughout
2020-03-20 17:16:24 -06:00
leds
leds: core: Add support for composing LED class device names
2019-07-25 20:07:52 +02:00
livepatch
livepatch: Documentation of the new API for tracking system state changes
2019-11-01 13:08:24 +01:00
locking
Documentation/locking/locktypes: Minor copy editor fixes
2020-03-28 12:47:34 +01:00
m68k
docs: README.buddha: convert to ReST and add to m68k book
2019-07-31 13:30:10 -06:00
maintainer
Add a maintainer entry profile for documentation
2020-01-24 09:48:39 -07:00
media
media updates for v5.7-rc1
2020-03-30 13:42:05 -07:00
mhi
docs: Add documentation for MHI bus
2020-03-19 07:41:04 +01:00
mips
docs: mips: remove no longer needed au1xxx_ide.rst documentation
2020-03-24 15:53:48 +01:00
misc-devices
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2020-04-01 14:47:40 -07:00
netlabel
docs: add some directories to the main documentation index
2019-07-15 11:03:03 -03:00
networking
ice: cleanup language in ice.rst for fw.app
2020-05-01 15:30:24 -07:00
nios2
docs: nios2: add it to the main Documentation body
2019-07-31 13:31:51 -06:00
nvdimm
docs: nvdimm: use ReST notation for subsection
2020-01-24 09:54:42 -07:00
openrisc
openrisc: configs: Cleanup CONFIG_CROSS_COMPILE
2020-01-31 22:10:58 +09:00
parisc
docs: parisc: convert to ReST and add to documentation body
2019-07-31 13:30:15 -06:00
PCI
pci-v5.7-changes
2020-04-03 14:25:02 -07:00
pcmcia
docs: add some directories to the main documentation index
2019-07-15 11:03:03 -03:00
power
Merge branches 'pm-core', 'pm-sleep', 'pm-acpi' and 'pm-domains'
2020-03-30 14:46:58 +02:00
powerpc
powerpc updates for 5.7
2020-04-05 11:12:59 -07:00
process
Documentation/changes: Raise minimum supported binutils version to 2.23
2020-04-09 00:02:00 +09:00
RCU
doc: Add rcutorture scripting to torture.txt
2020-02-27 07:03:14 -08:00
riscv
It has been a relatively quiet cycle for documentation, but there's still a
2020-01-29 15:27:31 -08:00
s390
Documentation/s390: remove outdated debugging390 documentation
2019-08-21 12:41:43 +02:00
scheduler
Documentation/scheduler: fix links in sched-stats
2019-10-29 04:35:41 -06:00
scsi
SCSI misc on 20200402
2020-04-02 17:03:53 -07:00
security
docs: prevent warnings due to autosectionlabel
2020-03-20 17:01:29 -06:00
sh
docs: remove extra conf.py files
2019-07-17 06:57:52 -03:00
sound
ALSA: hda/realtek - Remove now-unnecessary XPS 13 headphone noise fixups
2020-03-31 10:54:06 +02:00
sparc
docs: add arch doc directories to the index
2019-07-15 11:03:01 -03:00
sphinx
docs: Fix empty parallelism argument
2020-02-25 03:11:04 -07:00
sphinx-static
doc-rst: Reduce CSS padding around Field
2019-10-02 10:03:06 -06:00
spi
spi: docs: convert to ReST and add it to the kABI bookset
2019-07-31 14:13:13 -06:00
target
docs: prevent warnings due to autosectionlabel
2020-03-20 17:01:29 -06:00
timers
docs: add some directories to the main documentation index
2019-07-15 11:03:03 -03:00
trace
New tracing features:
2020-04-05 10:36:18 -07:00
translations
media updates for v5.7-rc1
2020-03-30 13:42:05 -07:00
usb
usb: raw-gadget: documentation updates
2020-05-14 12:30:18 +03:00
userspace-api
docs: userspace: ioctl-number: remove mc146818rtc conflict
2020-02-13 11:42:02 -07:00
virt
docs/virt/kvm: Document configuring and running nested guests
2020-05-06 05:45:47 -04:00
vm
mm/zswap: allow setting default status, compressor and allocator in Kconfig
2020-04-07 10:43:41 -07:00
w1
docs: w1: Fix a typo in omap-hdq.rst
2019-12-30 11:58:02 -07:00
watchdog
linux-watchdog 5.4-rc1 tag
2019-09-27 11:17:38 -07:00
x86
Documentation/x86, efi/x86: Clarify EFI handover protocol and its requirements
2020-04-14 08:32:15 +02:00
xtensa
docs: add arch doc directories to the index
2019-07-15 11:03:01 -03:00
.gitignore
.gitignore: add SPDX License Identifier
2020-03-25 11:50:48 +01:00
asm-annotations.rst
Documentation: Call out example SYM_FUNC_* usage as x86-specific
2020-01-16 12:53:16 -07:00
atomic_bitops.txt
…
atomic_t.txt
Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-07-08 16:12:03 -07:00
bus-virt-phys-mapping.txt
…
Changes
…
CodingStyle
…
conf.py
docs: conf.py: avoid thousands of duplicate label warning on Sphinx
2020-03-20 17:01:34 -06:00
COPYING-logo
docs: logo.txt: rename it to COPYING-logo
2019-07-15 09:20:27 -03:00
crc32.txt
…
debugging-via-ohci1394.txt
…
digsig.txt
…
DMA-API-HOWTO.txt
docs: DMA-API-HOWTO.txt: fix an unmarked code block
2019-07-15 09:20:24 -03:00
DMA-API.txt
dma-mapping: remove dma_release_declared_memory
2019-09-04 11:13:19 +02:00
DMA-attributes.txt
dma-mapping: remove the DMA_ATTR_WRITE_BARRIER flag
2019-11-14 12:01:54 -04:00
DMA-ISA-LPC.txt
…
docutils.conf
…
dontdiff
modpost: dump missing namespaces into a single modules.nsdeps file
2019-11-11 20:10:01 +09:00
futex-requeue-pi.txt
…
hwspinlock.txt
hwspinlock: add the 'in_atomic' API
2019-06-29 21:08:14 -07:00
index.rst
Char/Misc driver patches for 5.7-rc1
2020-04-03 13:22:40 -07:00
IPMI.txt
…
IRQ-affinity.txt
…
IRQ-domain.txt
…
IRQ.txt
…
irqflags-tracing.txt
…
Kconfig
…
kprobes.txt
…
kref.txt
docs: kref: Clarify the use of two kref_put() in example code
2020-02-25 03:39:10 -07:00
logo.gif
…
lzo.txt
…
mailbox.txt
…
Makefile
Kbuild updates for v5.7
2020-03-31 16:03:39 -07:00
memory-barriers.txt
Documentation/memory-barriers: Fix typos
2020-02-27 07:03:14 -08:00
nommu-mmap.txt
…
percpu-rw-semaphore.txt
…
pi-futex.txt
docs: locking: convert docs to ReST and rename to *.rst
2019-07-15 08:53:27 -03:00
preempt-locking.txt
…
rbtree.txt
docs: rbtree.txt: fix Sphinx build warnings
2019-07-15 09:20:24 -03:00
remoteproc.txt
remoteproc: Add elf64 support in elf loader
2020-03-25 22:29:40 -07:00
robust-futex-ABI.txt
threads: Update PID limit comment according to futex UAPI change
2020-03-21 17:48:13 +01:00
robust-futexes.txt
…
rpmsg.txt
…
speculation.txt
…
static-keys.txt
…
SubmittingPatches
…
tee.txt
Documentation: tee: add AMD-TEE driver details
2020-01-04 13:49:51 +08:00
this_cpu_ops.txt
…
unaligned-memory-access.txt
…
xz.txt
…