| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | * Linear Technology / Analog Devices I2C bus switch |
| 2 | |
| 3 | Required Properties: |
| 4 | |
| 5 | - compatible: Must contain one of the following. |
| 6 | "lltc,ltc4305", "lltc,ltc4306" |
| 7 | - reg: The I2C address of the device. |
| 8 | |
| 9 | The following required properties are defined externally: |
| 10 | |
| 11 | - Standard I2C mux properties. See i2c-mux.yaml in this directory. |
| 12 | - I2C child bus nodes. See i2c-mux.yaml in this directory. |
| 13 | |
| 14 | Optional Properties: |
| 15 | |
| 16 | - enable-gpios: Reference to the GPIO connected to the enable input. |
| 17 | - i2c-mux-idle-disconnect: Boolean; if defined, forces mux to disconnect all |
| 18 | children in idle state. This is necessary for example, if there are several |
| 19 | multiplexers on the bus and the devices behind them use same I2C addresses. |
| 20 | - gpio-controller: Marks the device node as a GPIO Controller. |
| 21 | - #gpio-cells: Should be two. The first cell is the pin number and |
| 22 | the second cell is used to specify flags. |
| 23 | See ../gpio/gpio.txt for more information. |
| 24 | - ltc,downstream-accelerators-enable: Enables the rise time accelerators |
| 25 | on the downstream port. |
| 26 | - ltc,upstream-accelerators-enable: Enables the rise time accelerators |
| 27 | on the upstream port. |
| 28 | |
| 29 | Example: |
| 30 | |
| 31 | ltc4306: i2c-mux@4a { |
| 32 | compatible = "lltc,ltc4306"; |
| 33 | #address-cells = <1>; |
| 34 | #size-cells = <0>; |
| 35 | reg = <0x4a>; |
| 36 | |
| 37 | gpio-controller; |
| 38 | #gpio-cells = <2>; |
| 39 | |
| 40 | i2c@0 { |
| 41 | #address-cells = <1>; |
| 42 | #size-cells = <0>; |
| 43 | reg = <0>; |
| 44 | |
| 45 | eeprom@50 { |
| 46 | compatible = "atmel,24c02"; |
| 47 | reg = <0x50>; |
| 48 | }; |
| 49 | }; |
| 50 | |
| 51 | i2c@1 { |
| 52 | #address-cells = <1>; |
| 53 | #size-cells = <0>; |
| 54 | reg = <1>; |
| 55 | |
| 56 | eeprom@50 { |
| 57 | compatible = "atmel,24c02"; |
| 58 | reg = <0x50>; |
| 59 | }; |
| 60 | }; |
| 61 | }; |