samsung_uart.yaml

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    1 # SPDX-License-Identifier: GPL-2.0
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/serial/samsung_uart.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Samsung S3C, S5P, Exynos, and S5L (Apple SoC) SoC UART Controller
    8 
    9 maintainers:
   10   - Krzysztof Kozlowski <krzk@kernel.org>
   11   - Greg Kroah-Hartman <gregkh@linuxfoundation.org>
   12 
   13 description: |+
   14   Each Samsung UART should have an alias correctly numbered in the "aliases"
   15   node, according to serialN format, where N is the port number (non-negative
   16   decimal integer) as specified by User's Manual of respective SoC.
   17 
   18 properties:
   19   compatible:
   20     items:
   21       - enum:
   22           - apple,s5l-uart
   23           - axis,artpec8-uart
   24           - samsung,s3c2410-uart
   25           - samsung,s3c2412-uart
   26           - samsung,s3c2440-uart
   27           - samsung,s3c6400-uart
   28           - samsung,s5pv210-uart
   29           - samsung,exynos4210-uart
   30           - samsung,exynos5433-uart
   31           - samsung,exynos850-uart
   32 
   33   reg:
   34     maxItems: 1
   35 
   36   reg-io-width:
   37     description: |
   38       The size (in bytes) of the IO accesses that should be performed
   39       on the device.
   40     $ref: /schemas/types.yaml#/definitions/uint32
   41     enum: [ 1, 4 ]
   42 
   43   clocks:
   44     minItems: 2
   45     maxItems: 5
   46 
   47   clock-names:
   48     description: N = 0 is allowed for SoCs without internal baud clock mux.
   49     minItems: 2
   50     items:
   51       - const: uart
   52       - pattern: '^clk_uart_baud[0-3]$'
   53       - pattern: '^clk_uart_baud[0-3]$'
   54       - pattern: '^clk_uart_baud[0-3]$'
   55       - pattern: '^clk_uart_baud[0-3]$'
   56 
   57   dmas:
   58     items:
   59       - description: DMA controller phandle and request line for RX
   60       - description: DMA controller phandle and request line for TX
   61 
   62   dma-names:
   63     items:
   64       - const: rx
   65       - const: tx
   66 
   67   interrupts:
   68     description: RX interrupt and optionally TX interrupt.
   69     minItems: 1
   70     maxItems: 2
   71 
   72   samsung,uart-fifosize:
   73     description: The fifo size supported by the UART channel.
   74     $ref: /schemas/types.yaml#/definitions/uint32
   75     enum: [16, 64, 256]
   76 
   77 required:
   78   - compatible
   79   - clocks
   80   - clock-names
   81   - interrupts
   82   - reg
   83 
   84 unevaluatedProperties: false
   85 
   86 allOf:
   87   - $ref: serial.yaml#
   88 
   89   - if:
   90       properties:
   91         compatible:
   92           contains:
   93             enum:
   94               - samsung,s3c2410-uart
   95               - samsung,s5pv210-uart
   96     then:
   97       properties:
   98         clocks:
   99           minItems: 2
  100           maxItems: 3
  101         clock-names:
  102           minItems: 2
  103           items:
  104             - const: uart
  105             - pattern: '^clk_uart_baud[0-1]$'
  106             - pattern: '^clk_uart_baud[0-1]$'
  107 
  108   - if:
  109       properties:
  110         compatible:
  111           contains:
  112             enum:
  113               - apple,s5l-uart
  114               - axis,artpec8-uart
  115               - samsung,exynos4210-uart
  116               - samsung,exynos5433-uart
  117     then:
  118       properties:
  119         clocks:
  120           maxItems: 2
  121         clock-names:
  122           items:
  123             - const: uart
  124             - const: clk_uart_baud0
  125 
  126 examples:
  127   - |
  128     #include <dt-bindings/clock/samsung,s3c64xx-clock.h>
  129 
  130     uart0: serial@7f005000 {
  131         compatible = "samsung,s3c6400-uart";
  132         reg = <0x7f005000 0x100>;
  133         interrupt-parent = <&vic1>;
  134         interrupts = <5>;
  135         clock-names = "uart", "clk_uart_baud2",
  136                       "clk_uart_baud3";
  137         clocks = <&clocks PCLK_UART0>, <&clocks PCLK_UART0>,
  138                  <&clocks SCLK_UART>;
  139         samsung,uart-fifosize = <16>;
  140     };

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/serial/samsung_uart.yaml

FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/serial/samsung_uart.yaml