XGE: timeout waiting for serdes link up

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I use A66K2H14.

rootfs is from mcsdk_3_00_04_18.

error msg is from keystone_xgepcsr.c  k2serdes_check_lane()

Oct  1 06:42:00 keystone-evm kernel: [   31.324488] XGE serdes config:
Oct  1 06:42:00 keystone-evm kernel: [   31.327524]   ref_clk=156.25MHz, link_rate=10.3125G, lanes=2
Oct  1 06:42:00 keystone-evm kernel: [   31.333163]   c1=2, c2=0, cm=2, tx_att=12, tx_vreg=4
Oct  1 06:42:00 keystone-evm kernel: [   31.338100]   eq flags: vreg=1, cdfe=1, offset=1
Oct  1 06:42:00 keystone-evm kernel: [   31.342699] XGE: serdes reset
Oct  1 06:42:00 keystone-evm kernel: [   32.577034] XGE: timeout waiting for serdes link up
Oct  1 06:42:00 keystone-evm kernel: [   32.582295] keystone-netcp 2f00000.netcp: Created interface "eth0"
Oct  1 06:42:00 keystone-evm kernel: [   32.588450] keystone-netcp 2f00000.netcp: dma_chan_name xgetx0
Oct  1 06:42:00 keystone-evm kernel: [   32.594271] XGE: serdes reset
Oct  1 06:42:00 keystone-evm kernel: [   33.828624] XGE: timeout waiting for serdes link up
Oct  1 06:42:00 keystone-evm kernel: [   33.833842] keystone-netcp 2f00000.netcp: Created interface "eth1"
Oct  1 06:42:00 keystone-evm kernel: [   33.840007] keystone-netcp 2f00000.netcp: dma_chan_name xgetx1
Oct  1 06:42:00 keystone-evm kernel: [   33.845815] XGE: serdes reset
Oct  1 06:42:00 keystone-evm kernel: [   35.080155] XGE: timeout waiting for serdes link up

In k2serdes_check_lane(), k2serdes_check_link_status() checked PCSR_RX_STATUS many times.

I added one pr_info() in this function to check these variables.

1165 int k2serdes_check_link_status(void __iomem *serdes,
1166                   void __iomem *sw_regs,
1167                   u32 lanes,
1168                   u32 *current_state,
1169                   u32 *lane_down)
1170 {
1171     u32 pcsr_rx_stat, blk_lock, blk_errs;
1172     int loss, i, status = 1;
1173
1174     for (i = 0; i < lanes; i++) {
1175         /* Rx Signal Loss bit in serdes lane control and status reg*/
1176         loss = (k2serdes_readl(serdes, LANE_CTRL_STS_REG(i))) & 0x01;
1177
1178         /* Block Errors and Block Lock bits in PCSR rx status reg */
1179         pcsr_rx_stat = k2serdes_readl(sw_regs, PCSR_RX_STATUS(i));
1180         blk_lock = (pcsr_rx_stat >> 30) & 0x1;
1181         blk_errs = (pcsr_rx_stat >> 16) & 0x0ff;
1182 pr_info("++++++ lane %d loss=%d pcsr_rx_stat=0x%08x lock=0x%08x errs=0x%08x state=%d\n", i, loss, pcsr_rx_stat, blk_lock, blk_errs, current_state[i]);

This line I added print this message many times, and value did not changed.

[   31.413619] ++++++ lane 0 loss=0 pcsr_rx_stat=0x00000000 lock=0x00000000 errs=0x00000000 state=0
[   31.423369] ++++++ lane 1 loss=0 pcsr_rx_stat=0x00000000 lock=0x00000000 errs=0x00000000 state=0

I also tried to check PCSR_CTL in the same way, but it keeps zero when waiting for serdes link up.

Thanks.