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1 | * Samsung's UART Controller |
2 | ||
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3 | The Samsung's UART controller is used for interfacing SoC with serial |
4 | communicaion devices. | |
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5 | |
6 | Required properties: | |
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7 | - compatible: should be one of following: |
8 | - "samsung,exynos4210-uart" - Exynos4210 SoC, | |
9 | - "samsung,s3c2410-uart" - compatible with ports present on S3C2410 SoC, | |
10 | - "samsung,s3c2412-uart" - compatible with ports present on S3C2412 SoC, | |
11 | - "samsung,s3c2440-uart" - compatible with ports present on S3C2440 SoC, | |
12 | - "samsung,s3c6400-uart" - compatible with ports present on S3C6400 SoC, | |
13 | - "samsung,s5pv210-uart" - compatible with ports present on S5PV210 SoC. | |
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14 | |
15 | - reg: base physical address of the controller and length of memory mapped | |
16 | region. | |
17 | ||
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18 | - interrupts: a single interrupt signal to SoC interrupt controller, |
19 | according to interrupt bindings documentation [1]. | |
20 | ||
21 | - clock-names: input names of clocks used by the controller: | |
22 | - "uart" - controller bus clock, | |
23 | - "clk_uart_baudN" - Nth baud base clock input (N = 0, 1, ...), | |
24 | according to SoC User's Manual (only N = 0 is allowedfor SoCs without | |
25 | internal baud clock mux). | |
26 | - clocks: phandles and specifiers for all clocks specified in "clock-names" | |
27 | property, in the same order, according to clock bindings documentation [2]. | |
28 | ||
29 | [1] Documentation/devicetree/bindings/interrupt-controller/interrupts.txt | |
30 | [2] Documentation/devicetree/bindings/clock/clock-bindings.txt | |
31 | ||
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32 | Optional properties: |
33 | - samsung,uart-fifosize: The fifo size supported by the UART channel | |
34 | ||
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35 | Note: Each Samsung UART should have an alias correctly numbered in the |
36 | "aliases" node, according to serialN format, where N is the port number | |
37 | (non-negative decimal integer) as specified by User's Manual of respective | |
38 | SoC. | |
39 | ||
40 | Example: | |
41 | aliases { | |
42 | serial0 = &uart0; | |
43 | serial1 = &uart1; | |
44 | serial2 = &uart2; | |
45 | }; | |
46 | ||
47 | Example: | |
48 | uart1: serial@7f005400 { | |
49 | compatible = "samsung,s3c6400-uart"; | |
50 | reg = <0x7f005400 0x100>; | |
51 | interrupt-parent = <&vic1>; | |
52 | interrupts = <6>; | |
53 | clock-names = "uart", "clk_uart_baud2", | |
54 | "clk_uart_baud3"; | |
55 | clocks = <&clocks PCLK_UART1>, <&clocks PCLK_UART1>, | |
56 | <&clocks SCLK_UART>; | |
135f07c3 | 57 | samsung,uart-fifosize = <16>; |
9b58bec7 | 58 | }; |