| 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/i2c/st,nomadik-i2c.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: ST Microelectronics Nomadik I2C |
| 8 | |
| 9 | description: The Nomadik I2C host controller began its life in the ST |
| 10 | Microelectronics STn8800 SoC, and was then inherited into STn8810 and |
| 11 | STn8815. It was part of the prototype STn8500 which then became ST-Ericsson |
| 12 | DB8500 after the merge of these two companies wireless divisions. |
| 13 | |
| 14 | maintainers: |
| 15 | - Linus Walleij <linus.walleij@linaro.org> |
| 16 | |
| 17 | allOf: |
| 18 | - $ref: /schemas/i2c/i2c-controller.yaml# |
| 19 | |
| 20 | # Need a custom select here or 'arm,primecell' will match on lots of nodes |
| 21 | select: |
| 22 | properties: |
| 23 | compatible: |
| 24 | contains: |
| 25 | enum: |
| 26 | - st,nomadik-i2c |
| 27 | required: |
| 28 | - compatible |
| 29 | |
| 30 | properties: |
| 31 | compatible: |
| 32 | oneOf: |
| 33 | # The variant found in STn8815 |
| 34 | - items: |
| 35 | - const: st,nomadik-i2c |
| 36 | - const: arm,primecell |
| 37 | # The variant found in DB8500 |
| 38 | - items: |
| 39 | - const: stericsson,db8500-i2c |
| 40 | - const: st,nomadik-i2c |
| 41 | - const: arm,primecell |
| 42 | |
| 43 | reg: |
| 44 | maxItems: 1 |
| 45 | |
| 46 | interrupts: |
| 47 | maxItems: 1 |
| 48 | |
| 49 | clocks: |
| 50 | maxItems: 2 |
| 51 | |
| 52 | clock-names: |
| 53 | oneOf: |
| 54 | # Clock name in STn8815 |
| 55 | - items: |
| 56 | - const: mclk |
| 57 | - const: apb_pclk |
| 58 | # Clock name in DB8500 |
| 59 | - items: |
| 60 | - const: i2cclk |
| 61 | - const: apb_pclk |
| 62 | |
| 63 | power-domains: |
| 64 | maxItems: 1 |
| 65 | |
| 66 | resets: |
| 67 | maxItems: 1 |
| 68 | |
| 69 | clock-frequency: |
| 70 | minimum: 1 |
| 71 | maximum: 400000 |
| 72 | |
| 73 | required: |
| 74 | - compatible |
| 75 | - reg |
| 76 | - interrupts |
| 77 | - clocks |
| 78 | - clock-names |
| 79 | |
| 80 | unevaluatedProperties: false |
| 81 | |
| 82 | examples: |
| 83 | - | |
| 84 | #include <dt-bindings/interrupt-controller/irq.h> |
| 85 | #include <dt-bindings/interrupt-controller/arm-gic.h> |
| 86 | #include <dt-bindings/reset/stericsson,db8500-prcc-reset.h> |
| 87 | #include <dt-bindings/arm/ux500_pm_domains.h> |
| 88 | i2c@80004000 { |
| 89 | compatible = "stericsson,db8500-i2c", "st,nomadik-i2c", "arm,primecell"; |
| 90 | reg = <0x80004000 0x1000>; |
| 91 | interrupts = <GIC_SPI 21 IRQ_TYPE_LEVEL_HIGH>; |
| 92 | |
| 93 | #address-cells = <1>; |
| 94 | #size-cells = <0>; |
| 95 | |
| 96 | clock-frequency = <400000>; |
| 97 | clocks = <&prcc_kclk 3 3>, <&prcc_pclk 3 3>; |
| 98 | clock-names = "i2cclk", "apb_pclk"; |
| 99 | power-domains = <&pm_domains DOMAIN_VAPE>; |
| 100 | resets = <&prcc_reset DB8500_PRCC_3 DB8500_PRCC_3_RESET_I2C0>; |
| 101 | }; |
| 102 | |
| 103 | i2c@101f8000 { |
| 104 | compatible = "st,nomadik-i2c", "arm,primecell"; |
| 105 | reg = <0x101f8000 0x1000>; |
| 106 | interrupt-parent = <&vica>; |
| 107 | interrupts = <20>; |
| 108 | clock-frequency = <100000>; |
| 109 | #address-cells = <1>; |
| 110 | #size-cells = <0>; |
| 111 | clocks = <&i2c0clk>, <&pclki2c0>; |
| 112 | clock-names = "mclk", "apb_pclk"; |
| 113 | }; |
| 114 | |
| 115 | ... |