ENET_ECR_SPEED
ecr |= ENET_ECR_SPEED; /* 1000Mbps mode */
ecr &= ~ENET_ECR_SPEED; /* 100Mbps mode */
ecr &= ~ENET_ECR_SPEED; /* 10Mbps mode */
ecr &= ~ENET_ECR_SPEED;
ecr_speed = ENET_ECR_SPEED;
ecr_speed = ENET_ECR_SPEED;