| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 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 on 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 | $ref: /schemas/types.yaml#/definitions/string |
| 48 | description: |
| 49 | Must be "mcspi<n>", n being the instance number (1-based). |
| 50 | This property is applicable only on legacy platforms mainly omap2/3 |
| 51 | and ti81xx and should not be used on other platforms. |
| 52 | deprecated: true |
| 53 | |
| 54 | ti,pindir-d0-out-d1-in: |
| 55 | description: |
| 56 | Select the D0 pin as output and D1 as input. The default is D0 |
| 57 | as input and D1 as output. |
| 58 | type: boolean |
| 59 | |
| 60 | dmas: |
| 61 | description: |
| 62 | List of DMA specifiers with the controller specific format as |
| 63 | described in the generic DMA client binding. A tx and rx |
| 64 | specifier is required for each chip select. |
| 65 | minItems: 1 |
| 66 | maxItems: 8 |
| 67 | |
| 68 | dma-names: |
| 69 | description: |
| 70 | List of DMA request names. These strings correspond 1:1 with |
| 71 | the DMA specifiers listed in dmas. The string names is to be |
| 72 | "rxN" and "txN" for RX and TX requests, respectively. Where N |
| 73 | is the chip select number. |
| 74 | minItems: 1 |
| 75 | maxItems: 8 |
| 76 | |
| 77 | required: |
| 78 | - compatible |
| 79 | - reg |
| 80 | - interrupts |
| 81 | |
| 82 | unevaluatedProperties: false |
| 83 | |
| 84 | if: |
| 85 | properties: |
| 86 | compatible: |
| 87 | enum: |
| 88 | - ti,omap2-mcspi |
| 89 | - ti,omap4-mcspi |
| 90 | |
| 91 | then: |
| 92 | properties: |
| 93 | ti,hwmods: |
| 94 | items: |
| 95 | - pattern: "^mcspi([1-9])$" |
| 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 | }; |