omap-spi.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/spi/omap-spi.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: SPI controller bindings for OMAP and K3 SoCs
    8 
    9 maintainers:
   10   - Aswath Govindraju <a-govindraju@ti.com>
   11 
   12 allOf:
   13   - $ref: spi-controller.yaml#
   14 
   15 properties:
   16   compatible:
   17     oneOf:
   18       - items:
   19           - enum:
   20               - ti,am654-mcspi
   21               - ti,am4372-mcspi
   22           - const: ti,omap4-mcspi
   23       - items:
   24           - enum:
   25               - ti,omap2-mcspi
   26               - ti,omap4-mcspi
   27 
   28   reg:
   29     maxItems: 1
   30 
   31   interrupts:
   32     maxItems: 1
   33 
   34   clocks:
   35     maxItems: 1
   36 
   37   power-domains:
   38     maxItems: 1
   39 
   40   ti,spi-num-cs:
   41     $ref: /schemas/types.yaml#/definitions/uint32
   42     description: Number of chipselect supported  by the instance.
   43     minimum: 1
   44     maximum: 4
   45 
   46   ti,hwmods:
   47     $ref: /schemas/types.yaml#/definitions/string
   48     description:
   49       Must be "mcspi<n>", n being the instance number (1-based).
   50       This property is applicable only on legacy platforms mainly omap2/3
   51       and ti81xx and should not be used on other platforms.
   52     deprecated: true
   53 
   54   ti,pindir-d0-out-d1-in:
   55     description:
   56       Select the D0 pin as output and D1 as input. The default is D0
   57       as input and D1 as output.
   58     type: boolean
   59 
   60   dmas:
   61     description:
   62       List of DMA specifiers with the controller specific format as
   63       described in the generic DMA client binding. A tx and rx
   64       specifier is required for each chip select.
   65     minItems: 1
   66     maxItems: 8
   67 
   68   dma-names:
   69     description:
   70       List of DMA request names. These strings correspond 1:1 with
   71       the DMA sepecifiers listed in dmas. The string names is to be
   72       "rxN" and "txN" for RX and TX requests, respectively. Where N
   73       is the chip select number.
   74     minItems: 1
   75     maxItems: 8
   76 
   77 required:
   78   - compatible
   79   - reg
   80   - interrupts
   81 
   82 unevaluatedProperties: false
   83 
   84 if:
   85   properties:
   86     compatible:
   87       enum:
   88         - ti,omap2-mcspi
   89         - ti,omap4-mcspi
   90 
   91 then:
   92   properties:
   93     ti,hwmods:
   94       items:
   95         - pattern: "^mcspi([1-9])$"
   96 
   97 else:
   98   properties:
   99     ti,hwmods: false
  100 
  101 examples:
  102   - |
  103     #include <dt-bindings/interrupt-controller/irq.h>
  104     #include <dt-bindings/interrupt-controller/arm-gic.h>
  105     #include <dt-bindings/soc/ti,sci_pm_domain.h>
  106 
  107     spi@2100000 {
  108       compatible = "ti,am654-mcspi","ti,omap4-mcspi";
  109       reg = <0x2100000 0x400>;
  110       interrupts = <GIC_SPI 184 IRQ_TYPE_LEVEL_HIGH>;
  111       clocks = <&k3_clks 137 1>;
  112       power-domains = <&k3_pds 137 TI_SCI_PD_EXCLUSIVE>;
  113       #address-cells = <1>;
  114       #size-cells = <0>;
  115       dmas = <&main_udmap 0xc500>, <&main_udmap 0x4500>;
  116       dma-names = "tx0", "rx0";
  117     };

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sys/contrib/device-tree/Bindings/spi/omap-spi.yaml