path: root/Documentation/kernel-parameters.txt
diff options
authorLinus Torvalds <torvalds@linux-foundation.org>2016-10-03 20:11:49 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-10-03 20:11:49 -0700
commite6dce825fba05f447bd22c865e27233182ab3d79 (patch)
tree266c22686f5b376f2e1d560baaf596e7fd5b9c98 /Documentation/kernel-parameters.txt
parent9929780e86854833e649b39b290b5fe921eb1701 (diff)
parent08bf21590041550e5ffd4d33e6a58548d0d09142 (diff)
Merge tag 'tty-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty and serial updates from Greg KH: "Here is the big tty and serial patch set for 4.9-rc1. It also includes some drivers/dma/ changes, as those were needed by some serial drivers, and they were all acked by the DMA maintainer. Also in here is the long-suffering ACPI SPCR patchset, which was passed around from maintainer to maintainer like a hot-potato. Seems I was the sucker^Wlucky one. All of those patches have been acked by the various subsystem maintainers as well. All of this has been in linux-next with no reported issues" * tag 'tty-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (111 commits) Revert "serial: pl011: add console matching function" MAINTAINERS: update entry for atmel_serial driver serial: pl011: add console matching function ARM64: ACPI: enable ACPI_SPCR_TABLE ACPI: parse SPCR and enable matching console of/serial: move earlycon early_param handling to serial Revert "drivers/tty: Explicitly pass current to show_stack" tty: amba-pl011: Don't complain on -EPROBE_DEFER when no irq nios2: dts: 10m50: Add tx-threshold parameter serial: 8250: Set Altera 16550 TX FIFO Threshold serial: 8250: of: Load TX FIFO Threshold from DT Documentation: dt: serial: Add TX FIFO threshold parameter drivers/tty: Explicitly pass current to show_stack serial: imx: Fix DCD reading serial: stm32: mark symbols static where possible serial: xuartps: Add some register initialisation to cdns_early_console_setup() serial: xuartps: Removed unwanted checks while reading the error conditions serial: xuartps: Rewrite the interrupt handling logic serial: stm32: use mapbase instead of membase for DMA tty/serial: atmel: fix fractional baud rate computation ...
Diffstat (limited to 'Documentation/kernel-parameters.txt')
1 files changed, 6 insertions, 5 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 25037ded3683..0e285941e3c7 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1054,11 +1054,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
determined by the stdout-path property in device
tree's chosen node.
- cdns,<addr>
- Start an early, polled-mode console on a cadence serial
- port at the specified address. The cadence serial port
- must already be setup and configured. Options are not
- yet supported.
+ cdns,<addr>[,options]
+ Start an early, polled-mode console on a Cadence
+ (xuartps) serial port at the specified address. Only
+ supported option is baud rate. If baud rate is not
+ specified, the serial port must already be setup and
+ configured.