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6a4f059ec8
When checking the outcome of the PHY autonegotiation status, at803x
currently returns false in case the SGMII side is not established.
Due to a hardware-bug, ag71xx needs to fixup the SoCs SGMII side, which
it can't as it is not aware of the link-establishment.
This commit allows to ignore the SGMII side autonegotiation status to
allow ag71xx to do the fixup work.
Signed-off-by: David Bauer <mail@david-bauer.net>
(cherry picked from commit 4e39e213af)
43 lines
1.5 KiB
Diff
43 lines
1.5 KiB
Diff
Index: linux-4.9.111/drivers/net/phy/at803x.c
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===================================================================
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--- linux-4.9.111.orig/drivers/net/phy/at803x.c
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+++ linux-4.9.111/drivers/net/phy/at803x.c
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@@ -461,12 +461,15 @@ static void at803x_link_change_notify(st
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static int at803x_aneg_done(struct phy_device *phydev)
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{
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+ struct at803x_platform_data *pdata;
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int ccr;
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int aneg_done = genphy_aneg_done(phydev);
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if (aneg_done != BMSR_ANEGCOMPLETE)
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return aneg_done;
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+ pdata = dev_get_platdata(&phydev->mdio.dev);
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+
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/*
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* in SGMII mode, if copper side autoneg is successful,
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* also check SGMII side autoneg result
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@@ -481,7 +484,8 @@ static int at803x_aneg_done(struct phy_d
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/* check if the SGMII link is OK. */
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if (!(phy_read(phydev, AT803X_PSSR) & AT803X_PSSR_MR_AN_COMPLETE)) {
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pr_warn("803x_aneg_done: SGMII link is not ok\n");
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- aneg_done = 0;
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+ if (!pdata || !pdata->override_sgmii_aneg)
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+ aneg_done = 0;
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}
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/* switch back to copper page */
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phy_write(phydev, AT803X_REG_CHIP_CONFIG, ccr | AT803X_BT_BX_REG_SEL);
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Index: linux-4.9.111/include/linux/platform_data/phy-at803x.h
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===================================================================
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--- linux-4.9.111.orig/include/linux/platform_data/phy-at803x.h
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+++ linux-4.9.111/include/linux/platform_data/phy-at803x.h
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@@ -7,6 +7,7 @@ struct at803x_platform_data {
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int enable_rgmii_rx_delay:1;
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int fixup_rgmii_tx_delay:1;
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int has_reset_gpio:1;
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+ int override_sgmii_aneg:1;
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int reset_gpio;
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};
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