RZ/G2E (R8A774C0) SoC also has the R-Car Gen3 compatible SCIF and
HSCIF ports, so document the SoC specific bindings.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
RZ/G2M (R8A774A1) SoC also has the R-Car Gen3 compatible SCIF and
HSCIF ports, so document the SoC specific bindings. While at it,
update the RZ/G1 and RZ/G2 family specific strings description as
outdated.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When a serial port continuously experiences input overrun from
(1) continuous receive characters from remote and or (2) hardware
issues, its interrupt handler can preempt other tasks especially
when the system is busy (ie. boot up period). This can cause other
tasks to get starved of processing time from the CPU.
When this dts binding is enabled and input overrun on the serial port
is detected, serial port receive will be throttled to give some breathing
room for processing other tasks. Value provided will be in milliseconds.
&serial0{
overrun-throttle-ms = <500>;
};
Signed-off-by: Darwin Dingel <darwin.dingel@alliedtelesis.co.nz>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Clocks and clock-names are updated in device tree binding.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Songjun Wu <songjun.wu@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add selective auto-flow-control support for UniPhier serial driver.
Signed-off-by: Dai Okamura <okamura.dai@socionext.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The FIFO size of the UART devices is 64 on almost all UniPhier SoCs
with the exception Pro4TV SoC (MN2WS0235), which used 128 FIFO size.
However, Pro4TV SoC was never upstreamed, and out of production.
So, this property has never been used in a useful way.
Let's remove old unused code.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
RZ/G1N (R8A7744) SoC also has the R-Car gen2 compatible SCIF, SCIFA,
SCIFB, and HSCIF ports, so document the SoC specific bindings.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch moves the bindings for serial from serial/atmel-usart.txt to
mfd/atmel-usart.txt and adds bindings for USART in SPI mode.
Signed-off-by: Radu Pirea <radu.pirea@microchip.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Here is the big tty and serial driver pull request for 4.19-rc1.
It's not all that big, just a number of small serial driver updates and
fixes, along with some better vt handling for unicode characters for
those using braille terminals.
Full details are in the shortlog.
All of these patches have been in linux-next for a long time with no
reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCW3g/5Q8cZ3JlZ0Brcm9h
aC5jb20ACgkQMUfUDdst+ynZDwCdETeD4sIqt06hXeG4ADiVORb3gLgAnjJTbl9Y
reffAFDRWrwD42SvTi1X
=7tX/
-----END PGP SIGNATURE-----
Merge tag 'tty-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial driver updates from Greg KH:
"Here is the big tty and serial driver pull request for 4.19-rc1.
It's not all that big, just a number of small serial driver updates
and fixes, along with some better vt handling for unicode characters
for those using braille terminals.
All of these patches have been in linux-next for a long time with no
reported issues"
* tag 'tty-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (73 commits)
tty: serial: 8250: Revert NXP SC16C2552 workaround
serial: 8250_exar: Read INT0 from slave device, too
tty: rocket: Fix possible buffer overwrite on register_PCI
serial: 8250_dw: Add ACPI support for uart on Broadcom SoC
serial: 8250_dw: always set baud rate in dw8250_set_termios
dt-bindings: serial: Add binding for uartlite
tty: serial: uartlite: Add support for suspend and resume
tty: serial: uartlite: Add clock adaptation
tty: serial: uartlite: Add structure for private data
serial: sh-sci: Improve support for separate TEI and DRI interrupts
serial: sh-sci: Remove SCIx_RZ_SCIFA_REGTYPE
serial: sh-sci: Allow for compressed SCIF address
serial: sh-sci: Improve interrupts description
serial: 8250: Use cached port name directly in messages
serial: 8250_exar: Drop unused variable in pci_xr17v35x_setup()
vt: drop unused struct vt_struct
vt: avoid a VLA in the unicode screen scroll function
vt: add /dev/vcsu* to devices.txt
vt: coherence validation code for the unicode screen buffer
vt: selection: take screen contents from uniscr if available
...
The uartlite devicetree binding was missed out.
Add the binding documentation for uartlite that is already in use.
Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Describe interrupts property in more detail, especially when there are
more than one interrupt.
Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
'interrupt-parent' is often documented as part of define bindings, but
it is really outside the scope of a device binding. It's never required
in a given node as it is often inherited from a parent node. Or it can
be implicit if a parent node is an 'interrupt-controller' node. So
remove it from all the binding files.
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: devicetree@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Serial aliases are optional since commit 7678f4c20f ("serial:
sh-sci: Add support for dynamic instances").
Update the DT bindings to reflect this.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The RZ/N1 UART is a modified Synopsys DesignWare UART.
The modifications only relate to DMA so you could actually use the
controller with the Synopsys compatible string if you are not using
DMA, but you should not do so.
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
AM654 uses a UART controller that is only partially compatible with
existing 8250 UART. UART DMA integration is substantially different
and even a match against standard 8250 or omap4 would result in
non-working UART once DMA is enabled by default.
Introduce a specific compatible to help build up the differences in
follow on patches.
Cc: Sekhar Nori <nsekhar@ti.com>
Cc: Vignesh R <vigneshr@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The i.MX UART peripheral uses the RST_B signal as input, and CTS_B as
output. This is just like the DCE role in RS-232. This is true
regardless of the "DTE mode" setting of this peripheral.
As a result, rs485 support hardware must use the CTS_B signal to control
the RS-485 transceiver. This is in contrast to generic rs485 kernel
code, documentation, and DT property names that consistently refer to
the RTS as transceiver control signal.
Add a note in the DT binding document about that, to reduce the
confusion somewhat.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Rename:
pinctrl-binding.txt -> pinctrl-bindings.txt
In order to match the current name of this file.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
RZ/G1C (R8A77470) SoC also has the R-Car gen2 compatible SCIF and HSCIF
ports, so document the SoC specific bindings.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Here is the big set of tty and serial driver patches for 4.17-rc1
Not all that big really, most are just small fixes and additions to
existing drivers. There's a bunch of work on the imx serial driver
recently for some reason, and a new embedded serial driver added as
well.
Full details are in the shortlog.
All of these have been in the linux-next tree for a while with no
reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCWsSn+w8cZ3JlZ0Brcm9h
aC5jb20ACgkQMUfUDdst+ynb6wCdEf5dAUrSB37ptZY78n4kc6nI6NAAniDO+rjL
ppZZp7QTIB/bnPfW8cOH
=+tfY
-----END PGP SIGNATURE-----
Merge tag 'tty-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial driver updates from Greg KH:
"Here is the big set of tty and serial driver patches for 4.17-rc1
Not all that big really, most are just small fixes and additions to
existing drivers. There's a bunch of work on the imx serial driver
recently for some reason, and a new embedded serial driver added as
well.
Full details are in the shortlog.
All of these have been in the linux-next tree for a while with no
reported issues"
* tag 'tty-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (66 commits)
serial: expose buf_overrun count through proc interface
serial: mvebu-uart: fix tx lost characters
tty: serial: msm_geni_serial: Fix return value check in qcom_geni_serial_probe()
tty: serial: msm_geni_serial: Add serial driver support for GENI based QUP
8250-men-mcb: add support for 16z025 and 16z057
powerpc: Mark the variable earlycon_acpi_spcr_enable maybe_unused
serial: stm32: fix initialization of RS485 mode
ARM: dts: STi: Remove "console=ttyASN" from bootargs for STi boards
vt: change SGR 21 to follow the standards
serdev: Fix typo in serdev_device_alloc
ARM: dts: STi: Fix aliases property name for STi boards
tty: st-asc: Update tty alias
serial: stm32: add support for RS485 hardware control mode
dt-bindings: serial: stm32: add RS485 optional properties
selftests: add devpts selftests
devpts: comment devpts_mntget()
devpts: resolve devpts bind-mounts
devpts: hoist out check for DEVPTS_SUPER_MAGIC
serial: 8250: Add Nuvoton NPCM UART
serial: mxs-auart: disable clks of Alphascale ASM9260
...
The cris architecture is getting removed, so we don't need the
uart driver any more.
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Jesper Nilsson <jesper.nilsson@axis.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
The Nuvoton UART is almost compatible with the 8250 driver when probed
via the 8250_of driver, however it requires some extra configuration
at startup.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
R-Car V3H (R8A77980) SoC has the R-Car gen3 compatible SCIF and HSCIF ports,
so document the SoC specific bindings.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
- Convert to use memblock_virt_alloc in DT code which supports bootmem
arches. With this we can remove the arch specific
early_init_dt_alloc_memory_arch() functions.
- Enable running the DT unittests on UML
- Use SPDX license tags on DT files
- Fix early FDT kconfig ifdef logic
- Clean-up unittest Makefile
- Fix function comment for of_irq_parse_raw
- Add missing documentation for linux,initrd-{start,end} properties
- Clean-up of binding examples using uppercase hex
- Add trivial devices W83773G and Infineon TLV493D-A1B6
- Add missing STM32 SoC bindings
- Various small binding doc fixes
-----BEGIN PGP SIGNATURE-----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=v6gj
-----END PGP SIGNATURE-----
Merge tag 'devicetree-for-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull DeviceTree updates from Rob Herring:
- Convert to use memblock_virt_alloc in DT code which supports
bootmem arches. With this we can remove the arch specific
early_init_dt_alloc_memory_arch() functions.
- Enable running the DT unittests on UML
- Use SPDX license tags on DT files
- Fix early FDT kconfig ifdef logic
- Clean-up unittest Makefile
- Fix function comment for of_irq_parse_raw
- Add missing documentation for linux,initrd-{start,end} properties
- Clean-up of binding examples using uppercase hex
- Add trivial devices W83773G and Infineon TLV493D-A1B6
- Add missing STM32 SoC bindings
- Various small binding doc fixes
* tag 'devicetree-for-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (23 commits)
xtensa: remove arch specific early DT functions
x86: remove arch specific early_init_dt_alloc_memory_arch
nios2: remove arch specific early_init_dt_alloc_memory_arch
mips: remove arch specific early_init_dt_alloc_memory_arch
metag: remove arch specific early DT functions
cris: remove arch specific early DT functions
libfdt: remove unnecessary include directive from <linux/libfdt.h>
of: unittest: refactor Makefile
of/fdt: use memblock_virt_alloc for early alloc
of: Use SPDX license tag for DT files
of/fdt: Fix #ifdef dependency of early flattree declarations
dt-bindings: h8300 clocksource: correct spelling of pulse
dt-bindings: imx6q-pcie: Add required property for i.MX6SX
mmc: Don't reference Linux-specific OF_GPIO_ACTIVE_LOW flag in DT binding
dt-bindings: Use lower case hex in unit-addresses
dt-bindings: display: panel: Fix compatible string for Toshiba LT089AC29000
dt-bindings: Add Infineon TLV493D-A1B6
dt-bindings: mailbox: ti,message-manager: Fix interrupt name error
dt-bindings: chosen: Document linux,initrd-{start,end}
dt-bindings: arm: document supported STM32 SoC family
...
The JZ4770 SoC's UART is no different from the other JZ SoCs, so this
commit simply adds the ingenic,jz4770-uart compatible string.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
DT unit addresses should be lower case hex. Fix all the
binding examples.
Converted with the following command from Krzysztof Kozlowski:
sed -e 's/@\([a-fA-F0-9_-]*\) {/@\L\1 {/' -i $(find Documentation/devicetree/bindings -name '*.txt')
Signed-off-by: Rob Herring <robh@kernel.org>
As a kernel newcomer, I got bitten by lack of examples on this front. I
had troubles figuring out where these clocks could be defined ("/clocks"
is where the generic infrastructure expects them).
One should also ensure that a unique name is used. Generic names such as
"osc" tend to be already used by some board-wide clock crystals.
Signed-off-by: Jan Kundrát <jan.kundrat@cesnet.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
I was getting this trace along with a disabled IRQ when I was generating
heavy traffic over four daisy-chained UARTs (MAX14830) on my test kit
(Marvell Armada AM388, Solidrun Clearfog Base):
irq 51: nobody cared (try booting with the "irqpoll" option)
CPU: 0 PID: 68 Comm: irq/51-spi1.2 Not tainted 4.14.4 #7
Hardware name: Marvell Armada 380/385 (Device Tree)
[<c0110ba4>] (unwind_backtrace) from [<c010c1d8>] (show_stack+0x10/0x14)
[<c010c1d8>] (show_stack) from [<c07776ac>] (dump_stack+0x84/0x98)
[<c07776ac>] (dump_stack) from [<c016bdfc>] (__report_bad_irq+0x28/0xcc)
[<c016bdfc>] (__report_bad_irq) from [<c016c204>] (note_interrupt+0x28c/0x2dc)
[<c016c204>] (note_interrupt) from [<c01695d4>] (handle_irq_event_percpu+0x4c/0x58)
[<c01695d4>] (handle_irq_event_percpu) from [<c0169624>] (handle_irq_event+0x44/0x68)
[<c0169624>] (handle_irq_event) from [<c016ce80>] (handle_edge_irq+0x12c/0x1dc)
[<c016ce80>] (handle_edge_irq) from [<c016872c>] (generic_handle_irq+0x24/0x34)
[<c016872c>] (generic_handle_irq) from [<c03fc5a0>] (mvebu_gpio_irq_handler+0xe0/0x184)
[<c03fc5a0>] (mvebu_gpio_irq_handler) from [<c016872c>] (generic_handle_irq+0x24/0x34)
[<c016872c>] (generic_handle_irq) from [<c0168c4c>] (__handle_domain_irq+0x5c/0xb4)
[<c0168c4c>] (__handle_domain_irq) from [<c0101520>] (gic_handle_irq+0x4c/0x90)
[<c0101520>] (gic_handle_irq) from [<c010ce4c>] (__irq_svc+0x6c/0x90)
Exception stack(0xeea77c30 to 0xeea77c78)
7c20: 0000000a 018cba80 0000000a f098f680
7c40: 0000020a f098f680 00000008 0000020a 018cba80 00000001 ee9302a0 eea76000
7c60: ef2b2640 eea77c80 c050687c c0506894 80070013 ffffffff
[<c010ce4c>] (__irq_svc) from [<c0506894>] (orion_spi_setup_transfer+0x118/0x20c)
[<c0506894>] (orion_spi_setup_transfer) from [<c05069ac>] (orion_spi_transfer_one+0x1c/0x26c)
[<c05069ac>] (orion_spi_transfer_one) from [<c05060e4>] (spi_transfer_one_message+0xec/0x500)
[<c05060e4>] (spi_transfer_one_message) from [<c05059a4>] (__spi_pump_messages+0x3f4/0x680)
[<c05059a4>] (__spi_pump_messages) from [<c0505e38>] (__spi_sync+0x1fc/0x200)
[<c0505e38>] (__spi_sync) from [<c0505e60>] (spi_sync+0x24/0x3c)
[<c0505e60>] (spi_sync) from [<c0505f48>] (spi_write_then_read+0xd0/0x17c)
[<c0505f48>] (spi_write_then_read) from [<c0482efc>] (_regmap_raw_read+0xb0/0x250)
[<c0482efc>] (_regmap_raw_read) from [<c04830c0>] (_regmap_bus_read+0x24/0x4c)
[<c04830c0>] (_regmap_bus_read) from [<c04826f4>] (_regmap_read+0x60/0x148)
[<c04826f4>] (_regmap_read) from [<c0482818>] (regmap_read+0x3c/0x5c)
[<c0482818>] (regmap_read) from [<c04592b4>] (max310x_port_irq+0x104/0x2dc)
[<c04592b4>] (max310x_port_irq) from [<c0459a40>] (max310x_ist+0x68/0xc0)
[<c0459a40>] (max310x_ist) from [<c016a610>] (irq_thread_fn+0x1c/0x54)
[<c016a610>] (irq_thread_fn) from [<c016a8d8>] (irq_thread+0x12c/0x1f0)
[<c016a8d8>] (irq_thread) from [<c013e560>] (kthread+0x128/0x158)
[<c013e560>] (kthread) from [<c0107a50>] (ret_from_fork+0x14/0x24)
handlers:
[<c0169694>] irq_default_primary_handler threaded [<c04599d8>] max310x_ist
Disabling IRQ #51
On a multi-UART max310x, each UART has its own interrupt status register
which automatically de-asserts the IRQ line upon read. (There are also
top-level IRQ indicator registers which are not clear-on-read, but they
are not relevant here.) It was quite possible to receive a pending IRQ
for, e.g., UART0, enter the threaded IRQ handler, clear the ISR for
UART0 which de-asserts the IRQ line, and then race with another event on
the same chip, but a different UART channel. That resulted in another
edge on the shared-within-the-chip IRQ line which got intercepted by the
kernel.
That all led to an edge-level interrupt which was not being handled by
anybody because our threaded handler hasn't finished yet. As the chip
actually uses *level* triggered IRQs, let's convert the example DT
bindings to these.
Signed-off-by: Jan Kundrát <jan.kundrat@cesnet.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Update the device tree binding documentation for the Marvell EBU UART,
in order to allow describing the extended UART IP block, in addition to
the already supported standard UART IP. This requires adding a new
compatible string, the introduction of a clocks property, and extensions
to the interrupts property.
Signed-off-by: Miquel Raynal <miquel.raynal@free-electrons.com>
Reviewed-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Improve the binding example by removing all the leading 0x to fix the
following dtc warnings:
Warning (unit_address_format): Node /XXX unit name should not have leading "0x"
Converted using the following command:
find Documentation/devicetree/bindings -name "*.txt" -exec sed -i -e 's/([^ ])\@0x([0-9a-f])/$1\@$2/g' {} +
This is a follow up to commit 48c926cd34
Signed-off-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Rob Herring <robh@kernel.org>
rs485 allows for robust half-duplex serial communication. It is often
implemented by attaching an rs485 transceiver to a UART. The UART's
RTS line is wired to the transceiver's Transmit Enable pin and
determines whether the transceiver is sending or receiving.
Examples for such transceivers are Maxim MAX13451E and TI SN65HVD1781A:
https://datasheets.maximintegrated.com/en/ds/MAX13450E-MAX13451E.pdfhttp://www.ti.com/lit/ds/symlink/sn65hvd1781a-q1.pdf
In the devicetree, the transceiver itself is not represented, only the
UART is. A few rs485-specific dt-bindings already exist and these go
into the UART's device node.
This commit adds a binding to set the RTS polarity. Most (if not all)
transceivers require the Transmit Enable pin be driven high for sending,
but in some cases boards may negate the pin and RTS must then be driven
low. Consequently the polarity defaults to active high but can be
inverted with the newly added "rs485-rts-active-low" binding.
Document this binding in rs485.txt and in the two drivers fsl-imx-uart
and fsl-lpuart that are about to be amended with support for it.
Curiously, the omap_serial driver defaults to active low and already
supports an "rs485-rts-active-high" binding to invert the polarity.
This is left unchanged to retain compatibility, but the binding is
herewith documented.
Cc: Mark Jackson <mpfj@newflow.co.uk>
Cc: Michał Oleszczyk <oleszczyk.m@gmail.com>
Cc: Rafael Gago Castano <rgc@hms.se>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
'fsl,irda-mode' property has been removed since commit afe9cbb1a6
("serial: imx: drop support for IRDA"), so remove it from the binding
document.
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We add device tree files for a couple of additional SoCs in various areas:
Allwinner R40/V40 for entertainment, Broadcom Hurricane 2 for networking,
Amlogic A113D for audio, and Renesas R-Car V3M for automotive.
As usual, lots of new boards get added based on those and other SoCs:
- Actions S500 based CubieBoard6 single-board computer
- Amlogic Meson-AXG A113D based development board
- Amlogic S912 based Khadas VIM2 single-board computer
- Amlogic S912 based Tronsmart Vega S96 set-top-box
- Allwinner H5 based NanoPi NEO Plus2 single-board computer
- Allwinner R40 based Banana Pi M2 Ultra and Berry single-board computers
- Allwinner A83T based TBS A711 Tablet
- Broadcom Hurricane 2 based Ubiquiti UniFi Switch 8
- Broadcom bcm47xx based Luxul XAP-1440/XAP-810/ABR-4500/XBR-4500
wireless access points and routers
- NXP i.MX51 based Zodiac Inflight Innovations RDU1 board
- NXP i.MX53 based GE Healthcare PPD biometric monitor
- NXP i.MX6 based Pistachio single-board computer
- NXP i.MX6 based Vining-2000 automotive diagnostic interface
- NXP i.MX6 based Ka-Ro TX6 Computer-on-Module in additional variants
- Qualcomm MSM8974 (Snapdragon 800) based Fairphone 2 phone
- Qualcomm MSM8974pro (Snapdragon 801) based Sony Xperia Z2 Tablet
- Realtek RTD1295 based set-top-boxes MeLE V9 and PROBOX2 AVA
- Renesas R-Car V3M (R8A77970) SoC and "Eagle" reference board
- Renesas H3ULCB and M3ULCB "Kingfisher" extension infotainment boards
- Renasas r8a7745 based iWave G22D-SODIMM SoM
- Rockchip rk3288 based Amarula Vyasa single-board computer
- Samsung Exynos5800 based Odroid HC1 single-board computer
For existing SoC support, there was a lot of ongoing work, as usual
most of that concentrated on the Renesas, Rockchip, OMAP, i.MX, Amlogic
and Allwinner platforms, but others were also active.
Rob Herring and many others worked on reducing the number of issues that
the latest version of 'dtc' now warns about. Unfortunately there is still
a lot left to do.
A rework of the ARM foundation model introduced several new files
for common variations of the model.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iQIcBAABAgAGBQJaDhcfAAoJEGCrR//JCVIngu0QAI2ntVotaOAOaCurNCnoVwI1
j+eKwHGTawQRcSHWN8C+p4FzzaOmw+vvbOyewky8PWaDOCkK6yWEHRf3hb2la2jw
j9prht28R1RAHIRPuah4SxKHYoT4VW9q/2hMHJ2BiNDOMX54xE7j2cUvWSsIRz5o
id2QqKsp2OIDNQAXAA4N25FjdBCYvSik80panSdJITtJODIj6UfmcXSgqkoQ3TTV
rwVyFtryl9Si3eyZYcfB2/0ILKuaMC8gl7IX9z+PkRqu9XN7i6bZKZlMMtpJqX3u
Ad89kLkFqNhiwZ77bIoRRl+0NEoSu5hTPLHRqghS6gPfDY2JT6igf0rGC8twjfea
fzGOBWr6NlIlUmR4smS0GyE/3YsfOQvYWjE+zx5qkmay30TORVTZBzsBR+kQJzKK
tnbO1zvst1ECtk9e8np0di4NAo9rwM37dxpu4aspP1Umxw1K68VSNE3RhGl8UUwW
oNvHa8hD8Ck0QDBNltrkmKBVoIYKRU3XhXrRXVjRQdu6Xitml0XYBi80V0h33EE3
162UXDEMu1/aqRRZUtKw7+yozT8fqOHjH8Zrv2zCVGg0HEwVohcWv/BPXbrg0abJ
wXYS8VocZJP6Nb4FQMe+cRbBUHoBgBQqbsF60tWiYsjv0zoc5hogLWcZYqzDcIO6
06OBR3HgUW27urUn/JBu
=TnSo
-----END PGP SIGNATURE-----
Merge tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM device-tree updates from Arnd Bergmann:
"We add device tree files for a couple of additional SoCs in various
areas:
Allwinner R40/V40 for entertainment, Broadcom Hurricane 2 for
networking, Amlogic A113D for audio, and Renesas R-Car V3M for
automotive.
As usual, lots of new boards get added based on those and other SoCs:
- Actions S500 based CubieBoard6 single-board computer
- Amlogic Meson-AXG A113D based development board
- Amlogic S912 based Khadas VIM2 single-board computer
- Amlogic S912 based Tronsmart Vega S96 set-top-box
- Allwinner H5 based NanoPi NEO Plus2 single-board computer
- Allwinner R40 based Banana Pi M2 Ultra and Berry single-board computers
- Allwinner A83T based TBS A711 Tablet
- Broadcom Hurricane 2 based Ubiquiti UniFi Switch 8
- Broadcom bcm47xx based Luxul XAP-1440/XAP-810/ABR-4500/XBR-4500
wireless access points and routers
- NXP i.MX51 based Zodiac Inflight Innovations RDU1 board
- NXP i.MX53 based GE Healthcare PPD biometric monitor
- NXP i.MX6 based Pistachio single-board computer
- NXP i.MX6 based Vining-2000 automotive diagnostic interface
- NXP i.MX6 based Ka-Ro TX6 Computer-on-Module in additional variants
- Qualcomm MSM8974 (Snapdragon 800) based Fairphone 2 phone
- Qualcomm MSM8974pro (Snapdragon 801) based Sony Xperia Z2 Tablet
- Realtek RTD1295 based set-top-boxes MeLE V9 and PROBOX2 AVA
- Renesas R-Car V3M (R8A77970) SoC and "Eagle" reference board
- Renesas H3ULCB and M3ULCB "Kingfisher" extension infotainment boards
- Renasas r8a7745 based iWave G22D-SODIMM SoM
- Rockchip rk3288 based Amarula Vyasa single-board computer
- Samsung Exynos5800 based Odroid HC1 single-board computer
For existing SoC support, there was a lot of ongoing work, as usual
most of that concentrated on the Renesas, Rockchip, OMAP, i.MX,
Amlogic and Allwinner platforms, but others were also active.
Rob Herring and many others worked on reducing the number of issues
that the latest version of 'dtc' now warns about. Unfortunately there
is still a lot left to do.
A rework of the ARM foundation model introduced several new files for
common variations of the model"
* tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (599 commits)
arm64: dts: uniphier: route on-board device IRQ to GPIO controller for PXs3
dt-bindings: bus: Add documentation for the Technologic Systems NBUS
arm64: dts: actions: s900-bubblegum-96: Add fake uart5 clock
ARM: dts: owl-s500: Add CubieBoard6
dt-bindings: arm: actions: Add CubieBoard6
ARM: dts: owl-s500-guitar-bb-rev-b: Add fake uart3 clock
ARM: dts: owl-s500: Set power domains for CPU2 and CPU3
arm: dts: mt7623: remove unused compatible string for pio node
arm: dts: mt7623: update usb related nodes
arm: dts: mt7623: update crypto node
ARM: dts: sun8i: a711: Enable USB OTG
ARM: dts: sun8i: a711: Add regulator support
ARM: dts: sun8i: a83t: bananapi-m3: Enable AP6212 WiFi on mmc1
ARM: dts: sun8i: a83t: cubietruck-plus: Enable AP6330 WiFi on mmc1
ARM: dts: sun8i: a83t: Move mmc1 pinctrl setting to dtsi file
ARM: dts: sun8i: a83t: allwinner-h8homlet-v2: Add AXP818 regulator nodes
ARM: dts: sun8i: a83t: bananapi-m3: Add AXP813 regulator nodes
ARM: dts: sun8i: a83t: cubietruck-plus: Add AXP818 regulator nodes
ARM: dts: sunxi: Add dtsi for AXP81x PMIC
arm64: dts: allwinner: H5: Restore EMAC changes
...
These are the main MIPS changes for 4.15.
Fixes:
- ralink: Fix MT7620 PCI build issues (4.5)
- Disable cmpxchg64() and HAVE_VIRT_CPU_ACCOUNTING_GEN for 32-bit SMP
(4.1)
- Fix MIPS64 FP save/restore on 32-bit kernels (4.0)
- ptrace: Pick up ptrace/seccomp changed syscall numbers (3.19)
- ralink: Fix MT7628 pinmux (3.19)
- BCM47XX: Fix LED inversion on WRT54GSv1 (3.17)
- Fix n32 core dumping as o32 since regset support (3.13)
- ralink: Drop obsolete USB_ARCH_HAS_HCD select
Build system:
- Default to "generic" (multiplatform) system type instead of IP22
- Use generic little endian MIPS32 r2 configuration as default defconfig
instead of ip22_defconfig
FPU emulation:
- Fix exception generation for certain R6 FPU instructions
SMP:
- Allow __cpu_number_map to be larger than NR_CPUS for sparse CPU id
spaces
Miscellaneous:
- Add iomem resource for kernel bss section for kexec/kdump
- Atomics: Nudge writes on bit unlock
- DT files: Standardise "ok" -> "okay"
Platform support:
BMIPS:
- Enable HARDIRQS_SW_RESEND
Broadcom BCM63XX:
- Add clkdev lookup support
- Update clk driver, UART driver, DTs to handle named refclk from DTs
- Split apart various clocks to more closely match hardware
- Add ethernet clocks
Cavium Octeon:
- Remove usage of cvmx_wait() in favour of __delay()
ImgTec Pistachio:
- DT: Drop deprecated dwmmc num-slots property
Ingenic JZ4780:
- Add NFS root to Ci20 defconfig
- Add watchdog to Ci20 DT & defconfig, and allow building of watchdog
driver with this SoC
Generic (multiplatform):
- Migrate xilfpga (MIPSfpga) platform to the generic platform
Lantiq xway:
- Fix ASC0/ASC1 clocks
Minor cleanups:
- Define virt_to_pfn()
- Make thread_saved_pc static
- Simplify 32-bit sign extension in __read_64bit_c0_split()
- DMA: Use vma_pages() helper
- FPU emulation: Replace unsigned with unsigned int
- MM: Removed unused lastpfn
- Alchemy: Make clk_ops const
- Lasat: Use setup_timer() helper
- ralink: Use BIT() in MT7620 PCI driver
-----BEGIN PGP SIGNATURE-----
iQIzBAABCAAdFiEEd80NauSabkiESfLYbAtpk944dnoFAloJ8ecACgkQbAtpk944
dnqF3w/+IPcxcYl7QpVFvM3MsDgxJI8ENIkY5ffMi1UVM8gApAHuFSnGotikS8C8
jjnFyorrOkUKuuX9m9pfwfmvMHAy8j77so7kp2vpGjihe4iFntYJxJYUpYq8Ru8M
jNzikrPbFv6eQyjwFEGuqxrJmsgTlJGiWA04a33LCfiFz5RZUSloHfPkjWiyWM1s
xrbkbZpwvyX3jw39vguZvz5qjuUPViy/YOSyMhmTqnqDXqGmwlHgzev1/HEzISVe
eN5n6bHGX5Dis4bCBPZuYbr6m96/z+xTKCKC7mlH0OnG/WWQtv9LFFU7o+ffRsI/
nPKEN/TFFA7V0b9zI/lxfVSoZ67IZa5TDA+PLnzX9UQAxOA/wgFHPOgqJZN3/BXo
OBgTuguwq9D22uSrvrMoqmcU+zDXG4ZQQCgv7mUUw2E9gHnsYJykhVa4kQVj9MxE
LkixhhE+Qabsh6L3wDtBntpgoOd58dxNiMJ7UAzDW3rmyjo+EEWN1eeCxQCrewlf
1aJaHeRoEOt/k7oPZWCd1InJ3vEsrNcO74KSZuQ+q0ytuqYOLUZ7ZXteA86VzroI
4qcftvR4cVOCz86B6NZdQQVOM95P7vgqBMJqh52i1pjQlVdvE92MBgzbm4BSOUAL
Y+hybhhIwJriF8WtTq2goL8osvMODM1uM3Zlm0XtA5JfUYbWK/E=
=xbL0
-----END PGP SIGNATURE-----
Merge tag 'mips_4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/mips
Pull MIPS updates from James Hogan:
"These are the main MIPS changes for 4.15.
Fixes:
- ralink: Fix MT7620 PCI build issues (4.5)
- Disable cmpxchg64() and HAVE_VIRT_CPU_ACCOUNTING_GEN for 32-bit SMP
(4.1)
- Fix MIPS64 FP save/restore on 32-bit kernels (4.0)
- ptrace: Pick up ptrace/seccomp changed syscall numbers (3.19)
- ralink: Fix MT7628 pinmux (3.19)
- BCM47XX: Fix LED inversion on WRT54GSv1 (3.17)
- Fix n32 core dumping as o32 since regset support (3.13)
- ralink: Drop obsolete USB_ARCH_HAS_HCD select
Build system:
- Default to "generic" (multiplatform) system type instead of IP22
- Use generic little endian MIPS32 r2 configuration as default
defconfig instead of ip22_defconfig
FPU emulation:
- Fix exception generation for certain R6 FPU instructions
SMP:
- Allow __cpu_number_map to be larger than NR_CPUS for sparse CPU id
spaces
Miscellaneous:
- Add iomem resource for kernel bss section for kexec/kdump
- Atomics: Nudge writes on bit unlock
- DT files: Standardise "ok" -> "okay"
Minor cleanups:
- Define virt_to_pfn()
- Make thread_saved_pc static
- Simplify 32-bit sign extension in __read_64bit_c0_split()
- DMA: Use vma_pages() helper
- FPU emulation: Replace unsigned with unsigned int
- MM: Removed unused lastpfn
- Alchemy: Make clk_ops const
- Lasat: Use setup_timer() helper
- ralink: Use BIT() in MT7620 PCI driver
Platform support:
BMIPS:
- Enable HARDIRQS_SW_RESEND
Broadcom BCM63XX:
- Add clkdev lookup support
- Update clk driver, UART driver, DTs to handle named refclk from DTs
- Split apart various clocks to more closely match hardware
- Add ethernet clocks
Cavium Octeon:
- Remove usage of cvmx_wait() in favour of __delay()
ImgTec Pistachio:
- DT: Drop deprecated dwmmc num-slots property
Ingenic JZ4780:
- Add NFS root to Ci20 defconfig
- Add watchdog to Ci20 DT & defconfig, and allow building of watchdog
driver with this SoC
Generic (multiplatform):
- Migrate xilfpga (MIPSfpga) platform to the generic platform
Lantiq xway:
- Fix ASC0/ASC1 clocks"
* tag 'mips_4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/mips: (46 commits)
MIPS: Add iomem resource for kernel bss section.
MIPS: cmpxchg64() and HAVE_VIRT_CPU_ACCOUNTING_GEN don't work for 32-bit SMP
MIPS: BMIPS: Enable HARDIRQS_SW_RESEND
MIPS: pci: Make use of the BIT() macro inside the mt7620 driver
MIPS: pci: Remove KERN_WARN instance inside the mt7620 driver
MIPS: pci: Remove duplicate define in mt7620 driver
MIPS: ralink: Fix typo in mt7628 pinmux function
MIPS: ralink: Fix MT7628 pinmux
MIPS: Fix odd fp register warnings with MIPS64r2
watchdog: jz4780: Allow selection of jz4740-wdt driver
MIPS/ptrace: Update syscall nr on register changes
MIPS/ptrace: Pick up ptrace/seccomp changed syscalls
MIPS: Fix an n32 core file generation regset support regression
MIPS: Fix MIPS64 FP save/restore on 32-bit kernels
MIPS: page.h: Define virt_to_pfn()
MIPS: Xilfpga: Switch to using generic defconfigs
MIPS: generic: Add support for MIPSfpga
MIPS: Set defconfig target to a generic system for 32r2el
MIPS: Kconfig: Set default MIPS system type as generic
MIPS: DTS: Remove num-slots from Pistachio SoC
...
Codify using a named clock for the refclk of the uart. This makes it
easier if we might need to add a gating clock (like present on the
BCM6345).
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-mips@linux-mips.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-serial@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: bcm-kernel-feedback-list@broadcom.com
Patchwork: https://patchwork.linux-mips.org/patch/17328/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: James Hogan <jhogan@kernel.org>
On Armada 7K/8k:
- Improve network support at SoC and board level
- Enable watchdog
- Add UART muxing
- On 7040 DB: add CD SDIO and NAND support
- On 8040 DB: add PCIE more ports and SPI1
On Armada 37xx:
- Fix UART register size
- Add vmmc regulator for SD on 3720 DB
-----BEGIN PGP SIGNATURE-----
iIEEABECAEEWIQQYqXDMF3cvSLY+g9cLBhiOFHI71QUCWeoPnCMcZ3JlZ29yeS5j
bGVtZW50QGZyZWUtZWxlY3Ryb25zLmNvbQAKCRALBhiOFHI71eWeAJ4yqhFToGh9
bLvyANmN33Lp0kYfEwCeKTJv715mvxAfJMYUMX7CUmgEAOs=
=9sls
-----END PGP SIGNATURE-----
Merge tag 'mvebu-dt64-4.15-1' of git://git.infradead.org/linux-mvebu into next/dt
Pull "mvebu dt64 for 4.15 (part 1)" from Gregory CLEMENT:
On Armada 7K/8k:
- Improve network support at SoC and board level
- Enable watchdog
- Add UART muxing
- On 7040 DB: add CD SDIO and NAND support
- On 8040 DB: add PCIE more ports and SPI1
On Armada 37xx:
- Fix UART register size
- Add vmmc regulator for SD on 3720 DB
* tag 'mvebu-dt64-4.15-1' of git://git.infradead.org/linux-mvebu:
arm64: dts: marvell: 7040-db: Add the carrier detect pin for SD card on CP
arm64: dts: marvell: 7040-db: Document the gpio expander
arm64: dts: marvell: enable additional PCIe ports on Armada 8040 DB
arm64: dts: marvell: add NAND support on the 7040-DB board
arm64: dts: marvell: Enable Armada-8040-DB CPS SPI1
arm64: dts: marvell: 8040-db: enable the SFP ports
arm64: dts: marvell: 7040-db: enable the SFP port
arm64: dts: marvell: 7040-db: add comphy reference to Ethernet port
arm64: dts: marvell: mcbin: add comphy references to Ethernet ports
arm64: dts: marvell: 37xx: remove empty line
arm64: dts: marvell: cp110: add PPv2 port interrupts
arm64: dts: marvell: add comphy nodes on cp110 master and slave
arm64: dts: marvell: extend the cp110 syscon register area length
arm64: dts: marvell: enable AP806 watchdog
arm64: dts: marvell: Fix A37xx UART0 register size
arm64: dts: marvell: armada-3720-db: Add vmmc regulator for SD slot
arm64: dts: marvell: add UART muxing on Armada 7K/8K
Atmel USART, Freescale UARTs and OMAP UART all support the rs485 binding
described in rs485.txt, this commit just makes that explicit.
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch removes the extra compatibility string "st,stm32-usart" to
avoid confusion, save some time & space.
Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
