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54 lines
1.9 KiB
Diff
54 lines
1.9 KiB
Diff
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From 880d1311335120f64447ca9d11933872d734e19a Mon Sep 17 00:00:00 2001
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From: Daniel Golle <daniel@makrotopia.org>
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Date: Mon, 27 Mar 2023 18:41:54 +0100
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Subject: [PATCH] generic: pcs-mtk-lynxi: add hack to use 2500Base-X without AN
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Using 2500Base-T SFP modules e.g. on the BananaPi R3 requires manually
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disabling auto-negotiation, e.g. using ethtool. While a proper fix
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using SFP quirks is being discussed upstream, bring a work-around to
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restore user experience to what it was before the switch to the
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dedicated SGMII PCS driver.
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Signed-off-by: Daniel Golle <daniel@makrotopia.org>
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--- a/drivers/net/pcs/pcs-mtk-lynxi.c
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+++ b/drivers/net/pcs/pcs-mtk-lynxi.c
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@@ -92,14 +92,23 @@ static void mtk_pcs_lynxi_get_state(stru
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struct phylink_link_state *state)
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{
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struct mtk_pcs_lynxi *mpcs = pcs_to_mtk_pcs_lynxi(pcs);
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- unsigned int bm, adv;
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+ unsigned int bm, bmsr, adv;
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/* Read the BMSR and LPA */
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regmap_read(mpcs->regmap, SGMSYS_PCS_CONTROL_1, &bm);
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- regmap_read(mpcs->regmap, SGMSYS_PCS_ADVERTISE, &adv);
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+ bmsr = FIELD_GET(SGMII_BMSR, bm);
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+
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+ if (state->interface == PHY_INTERFACE_MODE_2500BASEX) {
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+ state->link = !!(bmsr & BMSR_LSTATUS);
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+ state->an_complete = !!(bmsr & BMSR_ANEGCOMPLETE);
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+ state->speed = SPEED_2500;
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+ state->duplex = DUPLEX_FULL;
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- phylink_mii_c22_pcs_decode_state(state, FIELD_GET(SGMII_BMSR, bm),
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- FIELD_GET(SGMII_LPA, adv));
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+ return;
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+ }
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+
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+ regmap_read(mpcs->regmap, SGMSYS_PCS_ADVERTISE, &adv);
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+ phylink_mii_c22_pcs_decode_state(state, bmsr, FIELD_GET(SGMII_LPA, adv));
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}
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static int mtk_pcs_lynxi_config(struct phylink_pcs *pcs, unsigned int mode,
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@@ -134,7 +143,8 @@ static int mtk_pcs_lynxi_config(struct p
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/* 1000base-X or 2500base-X autoneg */
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sgm_mode = SGMII_REMOTE_FAULT_DIS;
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use_an = linkmode_test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
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- advertising);
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+ advertising) &&
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+ !(interface == PHY_INTERFACE_MODE_2500BASEX);
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} else {
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/* 1000base-X or 2500base-X without autoneg */
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sgm_mode = 0;
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