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The omap_serial.txt binding documentation lacks a number of properties that are used in DTS files for platforms incorporating this peripheral. Fix this by documenting the missing required and optional fields and add an example. Signed-off-by: Matt Porter <mporter@konsulko.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
31 lines
1.3 KiB
Plaintext
31 lines
1.3 KiB
Plaintext
OMAP UART controller
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Required properties:
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- compatible : should be "ti,omap2-uart" for OMAP2 controllers
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- compatible : should be "ti,omap3-uart" for OMAP3 controllers
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- compatible : should be "ti,omap4-uart" for OMAP4 controllers
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- reg : address and length of the register space
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- interrupts or interrupts-extended : Should contain the uart interrupt
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specifier or both the interrupt
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controller phandle and interrupt
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specifier.
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- ti,hwmods : Must be "uart<n>", n being the instance number (1-based)
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Optional properties:
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- clock-frequency : frequency of the clock input to the UART
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- dmas : DMA specifier, consisting of a phandle to the DMA controller
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node and a DMA channel number.
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- dma-names : "rx" for receive channel, "tx" for transmit channel.
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Example:
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uart4: serial@49042000 {
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compatible = "ti,omap3-uart";
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reg = <0x49042000 0x400>;
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interrupts = <80>;
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dmas = <&sdma 81 &sdma 82>;
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dma-names = "tx", "rx";
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ti,hwmods = "uart4";
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clock-frequency = <48000000>;
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};
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