src/sys/dev/uart/uart_dev_snps.c, branch release/12.4.0

Update Armada 38x UART device tree binding

2018-10-10T10:34:17+00:00

Recent changes in Linux updated Marvell Armada 38x
UART compatible string. As a result the FreeBSD driver
(uart_dev_snps) does not probe. This commit fixes the
situation, however not applying any functional modification
to the driver methods.

Approved by: re (kib)
Obtained from: Semihalf

add snps IP uart support / genaralize UART

2018-08-19T21:10:21+00:00

This is an amalgam of a patch by Doug Ambrisko to
generalize uart_acpi_find_device, imp moving the
ACPI table to uart_dev_ns8250.c and advice by jhb
to work around a bug in the EPYC 3151 BIOS
(the BIOS incorrectly marks the serial ports as
disabled)

Reviewed by: imp
MFC after: 8 weeks
Differential Revision: https://reviews.freebsd.org/D16432

Now that we set the busy_detect bit in the bas to support setting it

2018-07-23T19:27:11+00:00

for the console, set our override in the bas as well.

Tested by: emaste@

uart_snps: Add early printf support

2018-05-01T13:57:08+00:00

Move the allwinner early printf support to the snps driver as it
should work with all implementation.
While here add instruction for enabling it on 64bits SoCs.

Do pass removing some write-only variables from the kernel.

2017-12-25T04:48:39+00:00

This reduces noise when kernel is compiled by newer GCC versions,
such as one used by external toolchain ports.

Reviewed by: kib, andrew(sys/arm and sys/arm64), emaste(partial), erj(partial)
Reviewed by: jhb (sys/dev/pci/* sys/kern/vfs_aio.c and sys/kern/kern_synch.c)
Differential Revision: https://reviews.freebsd.org/D10385

Allow setting access-width for UART registers.

2017-02-27T20:08:42+00:00

This is required for FDT's standard "reg-io-width" property
(similar to "reg-shift" property) found in many DTS files.

This fixes operation on Altera Arria 10 SOC Development Kit,
where standard ns8250 uart allows 4-byte access only.

Reviewed by:	kan, marcel
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D9785

Revert r314212 as it break Allwinner boards.

2017-02-27T19:46:27+00:00

Reported by:	manu

Use correct macro for Synopsys UART driver declaration.

2017-02-24T16:37:35+00:00

EXTRES: Add OF node as argument to all _get_by_ofw_() functions.

2016-07-10T18:28:15+00:00

In some cases, the driver must handle given properties located in
specific OF subnode. Instead of creating duplicate set of function, add
'node' as argument to existing functions, defaulting it to device OF node.

MFC after: 3 weeks

Move support for Synopsys Designware APB UART out of ns8250 and into a

2016-04-01T20:26:45+00:00

separate driver. Add support for activating clock and hwreset resources
for these devices when the EXT_RESOURCES option is present.

Reviewed by:		andrew, mmel, Emmanuel Vadot 
Approved by:		adrian (mentor)
Differential Revision:	https://reviews.freebsd.org/D5749