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Commit ce4ee580 authored by Bhupesh Sharma's avatar Bhupesh Sharma Committed by Olof Johansson
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Documentation: DT: Add bindings for FSL NS16550A UART 



This patch addss the device-tree documentation for Freescale's
NS16550 UART (also called DUART).

There is a specific errata fix required in FSL NS16550 UART
which ensures that an random interrupt storm is not observed when
a break is provided as an input to the UART.

Signed-off-by: default avatarBhupesh Sharma <bhupesh.sharma@freescale.com>
Acked-by: default avatarMark Rutland <mark.rutland@arm.com>
Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
parent 58f1fdea

Documentation/devicetree/bindings/serial/of-serial.txt

+12 −0
Original line number Original line Diff line number Diff line
@@ -16,6 +16,7 @@ Required properties: 
	- "altr,16550-FIFO64"

	- "altr,16550-FIFO64"

	- "altr,16550-FIFO128"

	- "altr,16550-FIFO128"

	- "fsl,16550-FIFO64"

	- "fsl,16550-FIFO64"

	- "fsl,ns16550"

	- "serial" if the port type is unknown.

	- "serial" if the port type is unknown.

- reg : offset and length of the register set for the device.

- reg : offset and length of the register set for the device.

- interrupts : should contain uart interrupt.

- interrupts : should contain uart interrupt.
@@ -40,6 +41,17 @@ Optional properties: 
  driver is allowed to detect support for the capability even without this

  driver is allowed to detect support for the capability even without this

  property.

  property.





Note:

* fsl,ns16550:

  ------------

  Freescale DUART is very similar to the PC16552D (and to a

  pair of NS16550A), albeit with some nonstandard behavior such as

  erratum A-004737 (relating to incorrect BRK handling).



  Represents a single port that is compatible with the DUART found

  on many Freescale chips (examples include mpc8349, mpc8548,

  mpc8641d, p4080 and ls2085a).



Example:

Example:





	uart@80230000 {

	uart@80230000 {