| 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/nuvoton,npcm7xx-i2c.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: nuvoton NPCM7XX I2C Controller |
| 8 | |
| 9 | description: | |
| 10 | I2C bus controllers of the NPCM series support both master and |
| 11 | slave mode. Each controller can switch between master and slave at run time |
| 12 | (i.e. IPMB mode). HW FIFO for TX and RX are supported. |
| 13 | |
| 14 | maintainers: |
| 15 | - Tali Perry <tali.perry1@gmail.com> |
| 16 | |
| 17 | properties: |
| 18 | compatible: |
| 19 | enum: |
| 20 | - nuvoton,npcm750-i2c |
| 21 | - nuvoton,npcm845-i2c |
| 22 | |
| 23 | reg: |
| 24 | maxItems: 1 |
| 25 | |
| 26 | interrupts: |
| 27 | maxItems: 1 |
| 28 | |
| 29 | clocks: |
| 30 | maxItems: 1 |
| 31 | description: Reference clock for the I2C bus |
| 32 | |
| 33 | clock-frequency: |
| 34 | description: Desired I2C bus clock frequency in Hz. If not specified, |
| 35 | the default 100 kHz frequency will be used. |
| 36 | possible values are 100000, 400000 and 1000000. |
| 37 | default: 100000 |
| 38 | enum: [100000, 400000, 1000000] |
| 39 | |
| 40 | nuvoton,sys-mgr: |
| 41 | $ref: /schemas/types.yaml#/definitions/phandle |
| 42 | description: The phandle of system manager register node. |
| 43 | |
| 44 | required: |
| 45 | - compatible |
| 46 | - reg |
| 47 | - interrupts |
| 48 | - clocks |
| 49 | |
| 50 | allOf: |
| 51 | - $ref: /schemas/i2c/i2c-controller.yaml# |
| 52 | - if: |
| 53 | properties: |
| 54 | compatible: |
| 55 | contains: |
| 56 | const: nuvoton,npcm845-i2c |
| 57 | |
| 58 | then: |
| 59 | required: |
| 60 | - nuvoton,sys-mgr |
| 61 | |
| 62 | unevaluatedProperties: false |
| 63 | |
| 64 | examples: |
| 65 | - | |
| 66 | #include <dt-bindings/clock/nuvoton,npcm7xx-clock.h> |
| 67 | #include <dt-bindings/interrupt-controller/arm-gic.h> |
| 68 | i2c0: i2c@80000 { |
| 69 | reg = <0x80000 0x1000>; |
| 70 | clocks = <&clk NPCM7XX_CLK_APB2>; |
| 71 | clock-frequency = <100000>; |
| 72 | interrupts = <GIC_SPI 64 IRQ_TYPE_LEVEL_HIGH>; |
| 73 | compatible = "nuvoton,npcm750-i2c"; |
| 74 | nuvoton,sys-mgr = <&gcr>; |
| 75 | }; |
| 76 | |
| 77 | ... |