Hi Greg,
Today's linux-next merge of the tty tree got a conflict in
Documentation/devicetree/bindings/serial/pl011.txt between commit
a81a6c654bbe ("ARM: dt: fix up PL011 device tree bindings") from the
devicetree tree and commit 98267d33e2da ("serial: pl011: Add device
tree support for RX DMA polling") from the tty tree.
I fixed it up (see below) and can carry the fix as necessary (no action
is required).
--
Cheers,
Stephen Rothwell sfr@xxxxxxxxxxxxxxxx
diff --cc Documentation/devicetree/bindings/serial/pl011.txt
index 52464918cfe2,0e05340055e1..000000000000
--- a/Documentation/devicetree/bindings/serial/pl011.txt
+++ b/Documentation/devicetree/bindings/serial/pl011.txt
@@@ -6,34 -6,17 +6,39 @@@ Required properties
- interrupts: exactly one interrupt specifier
Optional properties:
-- pinctrl: When present, must have one state named "sleep"
- and one state named "default"
-- clocks: When present, must refer to exactly one clock named
- "apb_pclk"
-- dmas: When present, may have one or two dma channels.
- The first one must be named "rx", the second one
- must be named "tx".
+- pinctrl: When present, must have one state named "default",
+ and may contain a second name named "sleep". The former
+ state sets up pins for ordinary operation whereas
+ the latter state will put the associated pins to sleep
+ when the UART is unused
+- clocks: When present, the first clock listed must correspond to
+ the clock named UARTCLK on the IP block, i.e. the clock
+ to the external serial line, whereas the second clock
+ must correspond to the PCLK clocking the internal logic
+ of the block. Just listing one clock (the first one) is
+ deprecated.
+- clocks-names: When present, the first clock listed must be named
+ "uartclk" and the second clock listed must be named
+ "apb_pclk"
+- dmas: When present, may have one or two dma channels.
+ The first one must be named "rx", the second one
+ must be named "tx".
+ - auto-poll: Enables polling when using RX DMA.
+ - poll-rate-ms: Rate at which poll occurs when auto-poll is set,
+ default 100ms.
+ - poll-timeout-ms: Poll timeout when auto-poll is set, default
+ 3000ms.
See also bindings/arm/primecell.txt
+
+Example:
+
+uart@80120000 {
+ compatible = "arm,pl011", "arm,primecell";
+ reg = <0x80120000 0x1000>;
+ interrupts = <0 11 IRQ_TYPE_LEVEL_HIGH>;
+ dmas = <&dma 13 0 0x2>, <&dma 13 0 0x0>;
+ dma-names = "rx", "tx";
+ clocks = <&foo_clk>, <&bar_clk>;
+ clock-names = "uartclk", "apb_pclk";
+};
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