LOONGSON2_I2C_SR1
regmap_update_bits(priv->regmap, LOONGSON2_I2C_SR1, LOONGSON2_I2C_SR1_ARLO, 0);
regmap_update_bits(priv->regmap, LOONGSON2_I2C_SR1, LOONGSON2_I2C_SR1_AF, 0);
regmap_update_bits(priv->regmap, LOONGSON2_I2C_SR1, LOONGSON2_I2C_SR1_BERR, 0);
regmap_read(priv->regmap, LOONGSON2_I2C_SR1, &status);