Documentation/devicetree/bindings/ata/sata_highbank.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/ata/sata_highbank.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Calxeda AHCI SATA Controller
   8
   9 description: |
  10   The Calxeda SATA controller mostly conforms to the AHCI interface
  11   with some special extensions to add functionality, to map GPIOs for
  12   activity LEDs and for mapping the ComboPHYs.
  13
  14 maintainers:
  15   - Andre Przywara <andre.przywara@arm.com>
  16
  17 properties:
  18   compatible:
  19     const: calxeda,hb-ahci
  20
  21   reg:
  22     maxItems: 1
  23
  24   interrupts:
  25     maxItems: 1
  26
  27   dma-coherent: true
  28
  29   calxeda,pre-clocks:
  30     $ref: /schemas/types.yaml#/definitions/uint32
  31     description: |
  32       Indicates the number of additional clock cycles to transmit before
  33       sending an SGPIO pattern.
  34
  35   calxeda,post-clocks:
  36     $ref: /schemas/types.yaml#/definitions/uint32
  37     description: |
  38       Indicates the number of additional clock cycles to transmit after
  39       sending an SGPIO pattern.
  40
  41   calxeda,led-order:
  42     description: Maps port numbers to offsets within the SGPIO bitstream.
  43     $ref: /schemas/types.yaml#/definitions/uint32-array
  44     minItems: 1
  45     maxItems: 8
  46
  47   calxeda,port-phys:
  48     description: |
  49       phandle-combophy and lane assignment, which maps each SATA port to a
  50       combophy and a lane within that combophy
  51     $ref: /schemas/types.yaml#/definitions/phandle-array
  52     minItems: 1
  53     maxItems: 8
  54
  55   calxeda,tx-atten:
  56     description: |
  57       Contains TX attenuation override codes, one per port.
  58       The upper 24 bits of each entry are always 0 and thus ignored.
  59     $ref: /schemas/types.yaml#/definitions/uint32-array
  60     minItems: 1
  61     maxItems: 8
  62
  63   calxeda,sgpio-gpio:
  64     maxItems: 3
  65     description: |
  66       phandle-gpio bank, bit offset, and default on or off, which indicates
  67       that the driver supports SGPIO indicator lights using the indicated
  68       GPIOs.
  69
  70 required:
  71   - compatible
  72   - reg
  73   - interrupts
  74
  75 additionalProperties: false
  76
  77 examples:
  78   - |
  79     sata@ffe08000 {
  80         compatible = "calxeda,hb-ahci";
  81         reg = <0xffe08000 0x1000>;
  82         interrupts = <115>;
  83         dma-coherent;
  84         calxeda,port-phys = <&combophy5 0>, <&combophy0 0>, <&combophy0 1>,
  85                              <&combophy0 2>, <&combophy0 3>;
  86         calxeda,sgpio-gpio =<&gpioh 5 1>, <&gpioh 6 1>, <&gpioh 7 1>;
  87         calxeda,led-order = <4 0 1 2 3>;
  88         calxeda,tx-atten = <0xff 22 0xff 0xff 23>;
  89         calxeda,pre-clocks = <10>;
  90         calxeda,post-clocks = <0>;
  91     };
  92
  93 ...