Commit the i2c driver and its test case #118
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Signed-off-by: Tyrone Ting <[email protected]>
The NPCM SMB modules provides full support for a two-wire SMBus/I2C synchronous serial interface. Each SMBus/I2C interface is a two-wire serial interface that is compatible with both Intel SMBus and Philips I2C physical layer. There are 12 SMBus modules and 15 buses in NPCM4 series. In NPCM4 series, the SMB1, SMB4 and SMB6 modules contain a two-way switch to support two separate SMBus/I2C buses (ports) with one SMB module (controller). Please refer Section 4.7.1 in the datasheet. All of modules have separate 32-byte transmit FIFO and 32-byte receive FIFO buffers. These FIFO buffers reduce firmware overhead during long SMBus transactions by allowing the Core to write or read more than one data byte at a time to/from the SMB module. The CL includes: — Add npcm i2c device tree declarations. — Zephyr i2c api implementation. Signed-off-by: Tyrone Ting <[email protected]>
Adds necessary overlay npcm400f_evb in i2c_target_api test case to enables the board Signed-off-by: Tyrone Ting <[email protected]>
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