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-rw-r--r--target/linux/generic/hack-5.15/750-net-pcs-mtk-lynxi-workaround-2500BaseX-no-an.patch40
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;