LC_RENEGOTIATE_EN
tmp |= LC_UPCONFIGURE_SUPPORT | LC_RENEGOTIATE_EN | LC_RECONFIG_NOW;
link_width_cntl |= lanes | LC_RECONFIG_NOW | LC_RENEGOTIATE_EN;
LC_RENEGOTIATE_EN | LC_UPCONFIGURE_SUPPORT;
tmp |= LC_UPCONFIGURE_SUPPORT | LC_RENEGOTIATE_EN | LC_RECONFIG_NOW;