| Message ID | 20180731104139.93291-2-chris.brandt@renesas.com (mailing list archive) |
|---|---|
| State | Accepted |
| Delegated to: | Geert Uytterhoeven |
| Headers | show |
| Series | serial: sh-sci: Clean up previous RZ/A2 support | expand |
On Tue, Jul 31, 2018 at 05:41:36AM -0500, Chris Brandt wrote: > Describe interrupts property in more detail, especially when there are > more than one interrupt. > > Signed-off-by: Chris Brandt <chris.brandt@renesas.com> > Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> > --- > .../devicetree/bindings/serial/renesas,sci-serial.txt | 16 +++++++++++++++- > 1 file changed, 15 insertions(+), 1 deletion(-) Reviewed-by: Rob Herring <robh@kernel.org>
diff --git a/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt b/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt index a7cda6550100..eaca9da79d83 100644 --- a/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt +++ b/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt @@ -73,7 +73,21 @@ Required properties: family-specific and/or generic versions. - reg: Base address and length of the I/O registers used by the UART. - - interrupts: Must contain an interrupt-specifier for the SCIx interrupt. + - interrupts: Must contain one or more interrupt-specifiers for the SCIx. + If a single interrupt is expressed, then all events are + multiplexed into this single interrupt. + + If multiple interrupts are provided by the hardware, the order + in which the interrupts are listed must match order below. Note + that some HW interrupt events may be muxed together resulting + in duplicate entries. + The interrupt order is as follows: + 1. Error (ERI) + 2. Receive buffer full (RXI) + 3. Transmit buffer empty (TXI) + 4. Break (BRI) + 5. Data Ready (DRI) + 6. Transmit End (TEI) - clocks: Must contain a phandle and clock-specifier pair for each entry in clock-names.