I2C_MUX_PROVIDER_V0
if (reg->mr_vers != I2C_MUX_PROVIDER_V0) {
if (vers != I2C_MUX_PROVIDER_V0) {
reg->mr_vers = I2C_MUX_PROVIDER_V0;
#define I2C_MUX_PROVIDER I2C_MUX_PROVIDER_V0