Documentation/devicetree/bindings/spi/brcm,bcm63xx-spi.yaml

   1 # SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/spi/brcm,bcm63xx-spi.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Broadcom BCM6348/BCM6358 SPI controller
   8
   9 maintainers:
  10   - Jonas Gorski <jonas.gorski@gmail.com>
  11
  12 description: |
  13   Broadcom "Low Speed" SPI controller found in many older MIPS based Broadband
  14   SoCs.
  15
  16   This controller has a limitation that can not keep the chip select line active
  17   between the SPI transfers within the same SPI message. This can terminate the
  18   transaction to some SPI devices prematurely. The issue can be worked around by
  19   the controller's prepend mode.
  20
  21 allOf:
  22   - $ref: spi-controller.yaml#
  23
  24 properties:
  25   compatible:
  26     oneOf:
  27       - items:
  28           - enum:
  29               - brcm,bcm6368-spi
  30               - brcm,bcm6362-spi
  31               - brcm,bcm63268-spi
  32           - const: brcm,bcm6358-spi
  33       - enum:
  34           - brcm,bcm6348-spi
  35           - brcm,bcm6358-spi
  36
  37   reg:
  38     maxItems: 1
  39
  40   clocks:
  41     items:
  42       - description: SPI master reference clock
  43
  44   clock-names:
  45     items:
  46       - const: spi
  47
  48   interrupts:
  49     maxItems: 1
  50
  51 required:
  52   - compatible
  53   - reg
  54   - clocks
  55   - clock-names
  56   - interrupts
  57
  58 unevaluatedProperties: false
  59
  60 examples:
  61   - |
  62     spi@10000800 {
  63         compatible = "brcm,bcm6368-spi", "brcm,bcm6358-spi";
  64         reg = <0x10000800 0x70c>;
  65         interrupts = <1>;
  66         clocks = <&clkctl 9>;
  67         clock-names = "spi";
  68         num-cs = <5>;
  69         #address-cells = <1>;
  70         #size-cells = <0>;
  71     };