| Message ID | 1422133973-16460-2-git-send-email-bhupesh.sharma@freescale.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Sun, Jan 25, 2015 at 02:42:49AM +0530, Bhupesh Sharma wrote: > 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: Bhupesh Sharma <bhupesh.sharma@freescale.com> > Acked-by: Mark Rutland <mark.rutland@arm.com> Applied. -Olof
diff --git a/Documentation/devicetree/bindings/serial/of-serial.txt b/Documentation/devicetree/bindings/serial/of-serial.txt index 8c4fd03..1b3220b 100644 --- a/Documentation/devicetree/bindings/serial/of-serial.txt +++ b/Documentation/devicetree/bindings/serial/of-serial.txt @@ -15,6 +15,7 @@ Required properties: - "altr,16550-FIFO64" - "altr,16550-FIFO128" - "fsl,16550-FIFO64" + - "fsl,ns16550" - "serial" if the port type is unknown. - reg : offset and length of the register set for the device. - interrupts : should contain uart interrupt. @@ -39,6 +40,17 @@ Optional properties: driver is allowed to detect support for the capability even without this 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: uart@80230000 {