| # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/i2c/tsd,mule-i2c-mux.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: Theobroma Systems Mule I2C multiplexer |
| |
| maintainers: |
| - Farouk Bouabid <farouk.bouabid@cherry.de> |
| - Quentin Schulz <quentin.schulz@cherry.de> |
| |
| description: | |
| Theobroma Systems Mule is an MCU that emulates a set of I2C devices, among |
| which devices that are reachable through an I2C-mux. The devices on the mux |
| can be selected by writing the appropriate device number to an I2C config |
| register. |
| |
| |
| +--------------------------------------------------+ |
| | Mule | |
| 0x18| +---------------+ | |
| -------->|Config register|----+ | |
| | +---------------+ | | |
| | V_ | |
| | | \ +--------+ | |
| | | \-------->| dev #0 | | |
| | | | +--------+ | |
| 0x6f| | M |-------->| dev #1 | | |
| ---------------------------->| U | +--------+ | |
| | | X |-------->| dev #2 | | |
| | | | +--------+ | |
| | | /-------->| dev #3 | | |
| | |__/ +--------+ | |
| +--------------------------------------------------+ |
| |
| |
| allOf: |
| - $ref: /schemas/i2c/i2c-mux.yaml# |
| |
| properties: |
| compatible: |
| const: tsd,mule-i2c-mux |
| |
| required: |
| - compatible |
| |
| unevaluatedProperties: false |
| |
| examples: |
| - | |
| i2c-mux { |
| compatible = "tsd,mule-i2c-mux"; |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| i2c@0 { |
| reg = <0x0>; |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| rtc@6f { |
| compatible = "isil,isl1208"; |
| reg = <0x6f>; |
| }; |
| }; |
| }; |
| ... |
| |
