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| author | Daniel Golle <daniel@makrotopia.org> | 2023-03-27 18:41:54 +0100 |
|---|---|---|
| committer | Daniel Golle <daniel@makrotopia.org> | 2023-03-27 19:07:54 +0100 |
| commit | 880d1311335120f64447ca9d11933872d734e19a (patch) | |
| tree | a5ace9bbe9e17e6f71baa456c06e63892b28e128 /target/linux/generic | |
| parent | 72094f74a6d855d9146df9dec2d73355c9c434be (diff) | |
| download | upstream-880d1311335120f64447ca9d11933872d734e19a.tar.gz upstream-880d1311335120f64447ca9d11933872d734e19a.tar.bz2 upstream-880d1311335120f64447ca9d11933872d734e19a.zip | |
generic: pcs-mtk-lynxi: add hack to use 2500Base-X without AN
Using 2500Base-T SFP modules e.g. on the BananaPi R3 requires manually
disabling auto-negotiation, e.g. using ethtool. While a proper fix
using SFP quirks is being discussed upstream, bring a work-around to
restore user experience to what it was before the switch to the
dedicated SGMII PCS driver.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Diffstat (limited to 'target/linux/generic')
| -rw-r--r-- | target/linux/generic/hack-5.15/750-net-pcs-mtk-lynxi-workaround-2500BaseX-no-an.patch | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/target/linux/generic/hack-5.15/750-net-pcs-mtk-lynxi-workaround-2500BaseX-no-an.patch b/target/linux/generic/hack-5.15/750-net-pcs-mtk-lynxi-workaround-2500BaseX-no-an.patch new file mode 100644 index 0000000000..b03f0feab2 --- /dev/null +++ b/target/linux/generic/hack-5.15/750-net-pcs-mtk-lynxi-workaround-2500BaseX-no-an.patch @@ -0,0 +1,40 @@ +--- a/drivers/net/pcs/pcs-mtk-lynxi.c ++++ b/drivers/net/pcs/pcs-mtk-lynxi.c +@@ -92,14 +92,23 @@ static void mtk_pcs_lynxi_get_state(stru + struct phylink_link_state *state) + { + struct mtk_pcs_lynxi *mpcs = pcs_to_mtk_pcs_lynxi(pcs); +- unsigned int bm, adv; ++ unsigned int bm, bmsr, adv; + + /* Read the BMSR and LPA */ + regmap_read(mpcs->regmap, SGMSYS_PCS_CONTROL_1, &bm); +- regmap_read(mpcs->regmap, SGMSYS_PCS_ADVERTISE, &adv); ++ bmsr = FIELD_GET(SGMII_BMSR, bm); ++ ++ if (state->interface == PHY_INTERFACE_MODE_2500BASEX) { ++ state->link = !!(bmsr & BMSR_LSTATUS); ++ state->an_complete = !!(bmsr & BMSR_ANEGCOMPLETE); ++ state->speed = SPEED_2500; ++ state->duplex = DUPLEX_FULL; + +- phylink_mii_c22_pcs_decode_state(state, FIELD_GET(SGMII_BMSR, bm), +- FIELD_GET(SGMII_LPA, adv)); ++ return; ++ } ++ ++ regmap_read(mpcs->regmap, SGMSYS_PCS_ADVERTISE, &adv); ++ phylink_mii_c22_pcs_decode_state(state, bmsr, FIELD_GET(SGMII_LPA, adv)); + } + + static int mtk_pcs_lynxi_config(struct phylink_pcs *pcs, unsigned int mode, +@@ -134,7 +143,8 @@ static int mtk_pcs_lynxi_config(struct p + /* 1000base-X or 2500base-X autoneg */ + sgm_mode = SGMII_REMOTE_FAULT_DIS; + use_an = linkmode_test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, +- advertising); ++ advertising) && ++ !(interface == PHY_INTERFACE_MODE_2500BASEX); + } else { + /* 1000base-X or 2500base-X without autoneg */ + sgm_mode = 0; |