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gerrit-public.fairphone.software / kernel / msm-4.9 / 5c8a521d447682037221535bd898a9d182d25c7d / . / Documentation / devicetree / bindings / serial / omap_serial.txt
blob: 54c2a155c78323a70f9dc66eb62457eba1143232 [file] [log] [blame]
Rajendra Nayakd92b0df2011-12-14 17:25:45 +0530[diff] [blame]1OMAP UART controller
2
3Required properties:
4- compatible : should be "ti,omap2-uart" for OMAP2 controllers
5- compatible : should be "ti,omap3-uart" for OMAP3 controllers
6- compatible : should be "ti,omap4-uart" for OMAP4 controllers
Matt Porter5c8a5212015-02-26 10:38:45 -0500[diff] [blame^]7- reg : address and length of the register space
8- interrupts or interrupts-extended : Should contain the uart interrupt
9 specifier or both the interrupt
10 controller phandle and interrupt
11 specifier.
Rajendra Nayakd92b0df2011-12-14 17:25:45 +0530[diff] [blame]12- ti,hwmods : Must be "uart<n>", n being the instance number (1-based)
13
14Optional properties:
15- clock-frequency : frequency of the clock input to the UART
Matt Porter5c8a5212015-02-26 10:38:45 -0500[diff] [blame^]16- dmas : DMA specifier, consisting of a phandle to the DMA controller
17 node and a DMA channel number.
18- dma-names : "rx" for receive channel, "tx" for transmit channel.
19
20Example:
21
22 uart4: serial@49042000 {
23 compatible = "ti,omap3-uart";
24 reg = <0x49042000 0x400>;
25 interrupts = <80>;
26 dmas = <&sdma 81 &sdma 82>;
27 dma-names = "tx", "rx";
28 ti,hwmods = "uart4";
29 clock-frequency = <48000000>;
30 };