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MP2 controllers have two separate busses, so may accommodate up to two I2C adapters. Those adapters are listed in the ACPI namespace with the "AMDI0011" HID, and probed by a platform driver. Communication with the MP2 takes place through MMIO registers, or through DMA for more than 32 bytes transfers. This is major rework of the patch submitted by Nehal-bakulchandra Shah from AMD (https://patchwork.kernel.org/patch/10597369/). Most of the event handling of v3 was rewritten to make it work with more than one bus (e.g on Ryzen-based Lenovo Yoga 530), and this version contains many other improvements. Signed-off-by: Elie Morisse <syniurge@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> |
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| .. | ||
| busses | ||
| muxes | ||
| dev-interface | ||
| DMA-considerations | ||
| fault-codes | ||
| functionality | ||
| gpio-fault-injection | ||
| i2c-protocol | ||
| i2c-stub | ||
| i2c-topology | ||
| instantiating-devices | ||
| old-module-parameters | ||
| slave-eeprom-backend | ||
| slave-interface | ||
| smbus-protocol | ||
| summary | ||
| ten-bit-addresses | ||
| upgrading-clients | ||
| writing-clients | ||