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f04e377a50
QCA808x does not currently fill in the possible_interfaces. This leads to Phylink not being aware that it supports 2500Base-X as well so in cases where it is connected to a DSA switch like MV88E6393 it will limit that port to phy-mode set in the DTS. That means that if SGMII is used you are limited to 1G only while if 2500Base-X was set you are limited to 2.5G only. Populating the possible_interfaces fixes this, so lets backport the patches from kernel 6.9. This also includes a backport of the Phylink PHY validation series from kernel 6.8 that allows the use of possible_interfaces. Link: https://github.com/openwrt/openwrt/pull/15765 Signed-off-by: Robert Marko <robimarko@gmail.com>
96 lines
4.1 KiB
Diff
96 lines
4.1 KiB
Diff
From ee0e0ddb910e7e989b65a19d72b6435baa641fc7 Mon Sep 17 00:00:00 2001
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From: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
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Date: Fri, 24 Nov 2023 12:28:34 +0000
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Subject: [PATCH 6/7] net: phylink: split out PHY validation from
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phylink_bringup_phy()
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When bringing up a PHY, we need to work out which ethtool link modes it
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should support and advertise. Clause 22 PHYs operate in a single
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interface mode, which can be easily dealt with. However, clause 45 PHYs
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tend to switch interface mode depending on the media. We need more
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flexible validation at this point, so this patch splits out that code
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in preparation to changing it.
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Tested-by: Luo Jie <quic_luoj@quicinc.com>
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Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
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Reviewed-by: Andrew Lunn <andrew@lunn.ch>
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Link: https://lore.kernel.org/r/E1r6VIQ-00DDM9-LK@rmk-PC.armlinux.org.uk
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Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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---
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drivers/net/phy/phylink.c | 56 ++++++++++++++++++++++-----------------
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1 file changed, 31 insertions(+), 25 deletions(-)
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--- a/drivers/net/phy/phylink.c
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+++ b/drivers/net/phy/phylink.c
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@@ -1775,6 +1775,35 @@ static void phylink_phy_change(struct ph
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phylink_pause_to_str(pl->phy_state.pause));
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}
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+static int phylink_validate_phy(struct phylink *pl, struct phy_device *phy,
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+ unsigned long *supported,
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+ struct phylink_link_state *state)
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+{
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+ /* Check whether we would use rate matching for the proposed interface
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+ * mode.
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+ */
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+ state->rate_matching = phy_get_rate_matching(phy, state->interface);
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+
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+ /* Clause 45 PHYs may switch their Serdes lane between, e.g. 10GBASE-R,
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+ * 5GBASE-R, 2500BASE-X and SGMII if they are not using rate matching.
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+ * For some interface modes (e.g. RXAUI, XAUI and USXGMII) switching
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+ * their Serdes is either unnecessary or not reasonable.
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+ *
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+ * For these which switch interface modes, we really need to know which
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+ * interface modes the PHY supports to properly work out which ethtool
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+ * linkmodes can be supported. For now, as a work-around, we validate
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+ * against all interface modes, which may lead to more ethtool link
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+ * modes being advertised than are actually supported.
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+ */
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+ if (phy->is_c45 && state->rate_matching == RATE_MATCH_NONE &&
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+ state->interface != PHY_INTERFACE_MODE_RXAUI &&
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+ state->interface != PHY_INTERFACE_MODE_XAUI &&
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+ state->interface != PHY_INTERFACE_MODE_USXGMII)
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+ state->interface = PHY_INTERFACE_MODE_NA;
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+
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+ return phylink_validate(pl, supported, state);
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+}
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+
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static int phylink_bringup_phy(struct phylink *pl, struct phy_device *phy,
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phy_interface_t interface)
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{
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@@ -1795,32 +1824,9 @@ static int phylink_bringup_phy(struct ph
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memset(&config, 0, sizeof(config));
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linkmode_copy(supported, phy->supported);
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linkmode_copy(config.advertising, phy->advertising);
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+ config.interface = interface;
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- /* Check whether we would use rate matching for the proposed interface
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- * mode.
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- */
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- config.rate_matching = phy_get_rate_matching(phy, interface);
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-
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- /* Clause 45 PHYs may switch their Serdes lane between, e.g. 10GBASE-R,
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- * 5GBASE-R, 2500BASE-X and SGMII if they are not using rate matching.
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- * For some interface modes (e.g. RXAUI, XAUI and USXGMII) switching
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- * their Serdes is either unnecessary or not reasonable.
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- *
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- * For these which switch interface modes, we really need to know which
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- * interface modes the PHY supports to properly work out which ethtool
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- * linkmodes can be supported. For now, as a work-around, we validate
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- * against all interface modes, which may lead to more ethtool link
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- * modes being advertised than are actually supported.
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- */
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- if (phy->is_c45 && config.rate_matching == RATE_MATCH_NONE &&
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- interface != PHY_INTERFACE_MODE_RXAUI &&
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- interface != PHY_INTERFACE_MODE_XAUI &&
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- interface != PHY_INTERFACE_MODE_USXGMII)
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- config.interface = PHY_INTERFACE_MODE_NA;
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- else
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- config.interface = interface;
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-
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- ret = phylink_validate(pl, supported, &config);
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+ ret = phylink_validate_phy(pl, phy, supported, &config);
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if (ret) {
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phylink_warn(pl, "validation of %s with support %*pb and advertisement %*pb failed: %pe\n",
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phy_modes(config.interface),
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