33 lines
1.0 KiB
Plaintext
33 lines
1.0 KiB
Plaintext
* Spreadtrum serial UART
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Required properties:
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- compatible: must be one of:
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* "sprd,sc9836-uart"
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* "sprd,sc9860-uart", "sprd,sc9836-uart"
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- reg: offset and length of the register set for the device
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- interrupts: exactly one interrupt specifier
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- clock-names: Should contain following entries:
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"enable" for UART module enable clock,
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"uart" for UART clock,
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"source" for UART source (parent) clock.
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- clocks: Should contain a clock specifier for each entry in clock-names.
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UART clock and source clock are optional properties, but enable clock
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is required.
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Optional properties:
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- dma-names: Should contain "rx" for receive and "tx" for transmit channels.
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- dmas: A list of dma specifiers, one for each entry in dma-names.
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Example:
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uart0: serial@0 {
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compatible = "sprd,sc9860-uart",
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"sprd,sc9836-uart";
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reg = <0x0 0x100>;
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interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
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dma-names = "rx", "tx";
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dmas = <&ap_dma 19>, <&ap_dma 20>;
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clock-names = "enable", "uart", "source";
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clocks = <&clk_ap_apb_gates 9>, <&clk_uart0>, <&ext_26m>;
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};
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