一種I2C會發生的issue, arbitration lost的中文可以稱作”仲裁損失”
若是發生這種狀態的話, 有一種workaround的方式處理, 就是將此I2C切換為GPIO 啟用/關閉後, I2C就變正常了
nvidia 也針對這個issue提出作法, 且以GPL授權發布在網路上
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arm: tegra: cardhu: Added I2C arbitration lost recovery mechanism
Added the code for arbitration lost recovery mechanism for i2c
driver and Initialize gpio number for i2c clock and data as
part of platform data.