1. Fix the issue of external loopback
2. Fix the issue of down-shift
3. Add surge protection to support 0R and 5R mode
4. Enhance cable diag accuracy of cable length
5. Improved IoT performance and stability
Signed-off-by: SkyLake.Huang <skylake.huang@mediatek.com>
Signed-off-by: Lucien.Jheng <lucien.jheng@airoha.com>