Using I2C in Linux
- Albinleo Velappan (Deactivated)
Using I2C in Linux
The Trizeps and Myon CPU modules may be configured to have multiple I2C busses.
Myon I
Pins | IO-Port | Driver Index | Description |
|---|---|---|---|
66,68 | I2C4 | 3 | typical connected to touch-controller |
119,121 | I2C6 | 5 | I2C devices |
Trizeps VII
Pins | Port | Driver Index | Description |
|---|---|---|---|
194,196 | I2C2 | 1 | primary I2C interface |
94,96 | I2C1 | 0 | secondary I2C interface |
The PMFP0100 PMIC (7-bit address 0x08) of the Trizeps VII is connected to the primary I2C interface.
Trizeps VIII
Pins | Port | Driver Index | Description |
|---|---|---|---|
194,196 | I2C2 | 1 | primary I2C interface |
94,96 | I2C1 | 0 | secondary I2C interface |
- | I2C3 | 2 | internal I2C interface |
The following devices are attached to the internal I2C interface:
7bit | 8bit | Description |
|---|---|---|
0x08 | 0x10 | PMFP0100 PMIC |
0x10 | 0x20 | MKV11 Kinetis MCU |
0x1A | 0x34 | WM8983 Audio Codec |
0x2C | 0x58 | MIPI to LVDS transceiver |
0x40 | 0x80 | FPGA primary config address |
0x41 | 0x82 | FPGA primary user mode |
0x42 | 0x84 | FPGA secondary user mode |
0x43 | 0x86 | FPGA primary config reset |
0x60 | 0xC0 | VDD_SOC regulatur |
Trizeps VIII Mini
Pins | Port | Driver Index | Description |
|---|---|---|---|
194,196 | I2C2 | 1 | primary I2C interface |
94,96 | I2C1 | 0 | secondary I2C interface |
- | I2C3 | 2 | internal I2C interface |
The following devices are attached to the internal I2C interface:
7bit | 8bit | Description |
|---|---|---|
0x10 | 0x20 | MKV11 Kinetis MCU |
0x1A | 0x34 | WM8983 Audio Codec |
0x2C | 0x58 | MIPI to LVDS transceiver |
0x40 | 0x80 | FPGA primary config address |
0x41 | 0x82 | FPGA primary user mode |
0x42 | 0x84 | FPGA secondary user mode |
0x43 | 0x86 | FPGA primary config reset |
0x4B | 0x96 | BD71847 PMIC |
Trizeps VIII Plus
Pins | Port | Driver Index | Description |
|---|---|---|---|
194,196 | I2C2 | 1 | primary I2C interface |
94,96 | I2C1 | 0 | secondary I2C interface |
- | I2C3 | 2 | internal I2C interface |
The following devices are attached to the internal I2C interface:
7bit | 8bit | Description |
|---|---|---|
0x10 | 0x20 | MKV11 Kinetis MCU |
0x1A | 0x34 | WM8983/WM8962B Audio Codec |
0x25 | 0x4A | PCA9450 PMIC |
0x40 | 0x80 | FPGA primary config address |
0x41 | 0x82 | FPGA primary user mode |
0x43 | 0x86 | FPGA primary config reset |
0x4A | 0x94 | WM8962B test functionality |
0x69 | 0xD2 | WM8962B test functionality |
0x78 | 0xF0 | ??? |
Myon II
Pins | Port | Driver Index | Description |
|---|---|---|---|
J70-66,68 | I2C2 | 1 | primary I2C interface |
J71-67,69 | I2C1 | 0 | secondary I2C interface |
J71-19,21 | I2C3 | 2 | internal I2C interface |
[J70-73,75] | I2C4 | 3 | special mounting option! |
The following devices are attached to the internal I2C interface:
7bit | 8bit | Description |
|---|---|---|
0x1A | 0x34 | WM8983 Audio Codec |
0x2C | 0x58 | MIPI to LVDS transceiver |
0x4B | 0x96 | BD71847 PMIC |