amlogic,meson-gx-spicc.yaml

  1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
  2# Copyright 2019 BayLibre, SAS
  3%YAML 1.2
  4---
  5$id: http://devicetree.org/schemas/spi/amlogic,meson-gx-spicc.yaml#
  6$schema: http://devicetree.org/meta-schemas/core.yaml#
  7
  8title: Amlogic Meson SPI Communication Controller
  9
 10maintainers:
 11  - Neil Armstrong <neil.armstrong@linaro.org>
 12
 13description: |
 14  The Meson SPICC is a generic SPI controller for general purpose Full-Duplex
 15  communications with dedicated 16 words RX/TX PIO FIFOs.
 16
 17properties:
 18  compatible:
 19    enum:
 20      - amlogic,meson-gx-spicc # SPICC controller on Amlogic GX and compatible SoCs
 21      - amlogic,meson-axg-spicc # SPICC controller on Amlogic AXG and compatible SoCs
 22      - amlogic,meson-g12a-spicc # SPICC controller on Amlogic G12A and compatible SoCs
 23
 24  interrupts:
 25    maxItems: 1
 26
 27  reg:
 28    maxItems: 1
 29
 30  resets:
 31    maxItems: 1
 32
 33  clocks:
 34    minItems: 1
 35    items:
 36      - description: controller register bus clock
 37      - description: baud rate generator and delay control clock
 38
 39  clock-names:
 40    minItems: 1
 41    maxItems: 2
 42
 43allOf:
 44  - $ref: spi-controller.yaml#
 45  - if:
 46      properties:
 47        compatible:
 48          contains:
 49            enum:
 50              - amlogic,meson-g12a-spicc
 51
 52    then:
 53      properties:
 54        clocks:
 55          minItems: 2
 56
 57        clock-names:
 58          items:
 59            - const: core
 60            - const: pclk
 61
 62    else:
 63      properties:
 64        clocks:
 65          maxItems: 1
 66
 67        clock-names:
 68          items:
 69            - const: core
 70
 71  - if:
 72      properties:
 73        compatible:
 74          contains:
 75            enum:
 76              - amlogic,meson-gx-spicc
 77
 78    then:
 79      properties:
 80        pinctrl-0: true
 81        pinctrl-1: true
 82        pinctrl-2: true
 83
 84        pinctrl-names:
 85          minItems: 1
 86          items:
 87            - const: default
 88            - const: idle-high
 89            - const: idle-low
 90
 91required:
 92  - compatible
 93  - reg
 94  - interrupts
 95  - clocks
 96  - clock-names
 97
 98unevaluatedProperties: false
 99
100examples:
101  - |
102    spi@c1108d80 {
103        compatible = "amlogic,meson-gx-spicc";
104        reg = <0xc1108d80 0x80>;
105        interrupts = <112>;
106        clocks = <&clk81>;
107        clock-names = "core";
108        #address-cells = <1>;
109        #size-cells = <0>;
110
111        display@0 {
112            compatible = "lg,lg4573";
113            spi-max-frequency = <1000000>;
114            reg = <0>;
115        };
116    };