Merge tag 'tty-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty / serial updates from Greg KH:
 "Here is a small set of tty and serial driver updates for 6.11-rc1. Not
  much happened this cycle, unlike the previous kernel release which had
  lots of "excitement" in this part of the kernel. Included in here are
  the following changes:

   - dt binding updates for new platforms

   - 8250 driver updates

   - various small serial driver fixes and updates

   - printk/console naming and matching attempt #2 (was reverted for
     6.10-final, should be good to go this time around, acked by the
     relevant maintainers).

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'tty-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (22 commits)
  Documentation: kernel-parameters: Add DEVNAME:0.0 format for serial ports
  serial: core: Add serial_base_match_and_update_preferred_console()
  printk: Add match_devname_and_update_preferred_console()
  serial: sc16is7xx: hardware reset chip if reset-gpios is defined in DT
  dt-bindings: serial: sc16is7xx: add reset-gpios
  dt-bindings: serial: vt8500-uart: convert to json-schema
  serial: 8250_platform: Explicitly show we initialise ISA ports only once
  tty: add missing MODULE_DESCRIPTION() macros
  dt-bindings: serial: mediatek,uart: add MT7988
  serial: sh-sci: Add support for RZ/V2H(P) SoC
  dt-bindings: serial: Add documentation for Renesas RZ/V2H(P) (R9A09G057) SCIF support
  dt-bindings: serial: renesas,scif: Make 'interrupt-names' property as required
  dt-bindings: serial: renesas,scif: Validate 'interrupts' and 'interrupt-names'
  dt-bindings: serial: renesas,scif: Move ref for serial.yaml at the end
  riscv: dts: starfive: jh7110: Add the core reset and jh7110 compatible for uarts
  serial: 8250_dw: Use reset array API to get resets
  dt-bindings: serial: snps-dw-apb-uart: Add one more reset signal for StarFive JH7110 SoC
  serial: 8250: Extract platform driver
  serial: 8250: Extract RSA bits
  serial: imx: stop casting struct uart_port to struct imx_port
  ...

1 files changed, 19 insertions, 0 deletions

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 2deccf57ecee..6a597e911e9c 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -792,6 +792,25 @@
 			Documentation/networking/netconsole.rst for an
 			alternative.
 
+		<DEVNAME>:<n>.<n>[,options]
+			Use the specified serial port on the serial core bus.
+			The addressing uses DEVNAME of the physical serial port
+			device, followed by the serial core controller instance,
+			and the serial port instance. The options are the same
+			as documented for the ttyS addressing above.
+
+			The mapping of the serial ports to the tty instances
+			can be viewed with:
+
+			$ ls -d /sys/bus/serial-base/devices/*:*.*/tty/*
+			/sys/bus/serial-base/devices/00:04:0.0/tty/ttyS0
+
+			In the above example, the console can be addressed with
+			console=00:04:0.0. Note that a console addressed this
+			way will only get added when the related device driver
+			is ready. The use of an earlycon parameter in addition to
+			the console may be desired for console output early on.
+
 		uart[8250],io,<addr>[,options]
 		uart[8250],mmio,<addr>[,options]
 		uart[8250],mmio16,<addr>[,options]