Diffstat (limited to 'dts/Bindings/serial/pl011.txt')
1 files changed, 38 insertions, 4 deletions
diff --git a/dts/Bindings/serial/pl011.txt b/dts/Bindings/serial/pl011.txt
index 5d2e840ae6..ba3ecb8cb5 100644
@@ -6,12 +6,46 @@ Required properties:
- interrupts: exactly one interrupt specifier
-- pinctrl: When present, must have one state named "sleep"
- and one state named "default"
-- clocks: When present, must refer to exactly one clock named
+ 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
+ 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
+ When present, the first clock listed must be named
+ "uartclk" and the second clock listed must be named
-- dmas: When present, may have one or two dma channels.
+ When present, may have one or two dma channels.
The first one must be named "rx", the second one
must be named "tx".
+ Enables polling when using RX DMA.
+ Rate at which poll occurs when auto-poll is set,
+ default 100ms.
+ Poll timeout when auto-poll is set, default
See also bindings/arm/primecell.txt
+ 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";