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realtek: pcs: rtl931x: fix SerDes link status reading
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Fix the function for reading the SerDes link status to work correctly
based on the code the SDK uses. This is mostly for the sake of
documentation and quick access to the information. The function isn't
used currently but may be in the future, thus no functional change here.

Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/22014
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
This commit is contained in:
Jonas Jelonek 2026-02-10 13:56:27 +00:00 • committed by Hauke Mehrtens
parent cf1f06817c
commit 8904ac2673
1 changed files with 12 additions and 2 deletions
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14
target/linux/realtek/files-6.12/drivers/net/pcs/pcs-rtl-otto.c
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@ -3386,12 +3386,22 @@ static int rtpcs_931x_sds_link_sts_get(struct rtpcs_serdes *sds)
{
u32 sts, sts1, latch_sts, latch_sts1;
if (0) {
switch (sds->hw_mode) {
case RTPCS_SDS_MODE_XSGMII:
sts = rtpcs_sds_read_bits(sds, 0x41, 29, 8, 0);
sts1 = rtpcs_sds_read_bits(sds, 0x81, 29, 8, 0);
latch_sts = rtpcs_sds_read_bits(sds, 0x41, 30, 8, 0);
latch_sts1 = rtpcs_sds_read_bits(sds, 0x81, 30, 8, 0);
} else {
break;
case RTPCS_SDS_MODE_SGMII:
case RTPCS_SDS_MODE_HISGMII:
case RTPCS_SDS_MODE_2500BASEX:
sts = rtpcs_sds_read_bits(sds, 0x41, 29, 8, 0);
latch_sts = rtpcs_sds_read_bits(sds, 0x41, 30, 8, 0);
break;
default:
sts = rtpcs_sds_read_bits(sds, 0x5, 0, 12, 12);
latch_sts = rtpcs_sds_read_bits(sds, 0x4, 1, 2, 2);
latch_sts1 = rtpcs_sds_read_bits(sds, 0x42, 1, 2, 2);