From: Mark Brown broonie@kernel.org
[ Upstream commit f3bb7759a924713bc54d15f6d0d70733b5935fad ]
As documented in acd7aaf51b20 ("netsec: ignore 'phy-mode' device property on ACPI systems") the SocioNext SynQuacer platform ships with firmware defining the PHY mode as RGMII even though the physical configuration of the PHY is for TX and RX delays. Since bbc4d71d63549bc ("net: phy: realtek: fix rtl8211e rx/tx delay config") this has caused misconfiguration of the PHY, rendering the network unusable.
This was worked around for ACPI by ignoring the phy-mode property but the system is also used with DT. For DT instead if we're running on a SynQuacer force a working PHY mode, as well as the standard EDK2 firmware with DT there are also some of these systems that use u-boot and might not initialise the PHY if not netbooting. Newer firmware imagaes for at least EDK2 are available from Linaro so print a warning when doing this.
Fixes: 533dd11a12f6 ("net: socionext: Add Synquacer NetSec driver") Signed-off-by: Mark Brown broonie@kernel.org Acked-by: Ard Biesheuvel ardb@kernel.org Acked-by: Ilias Apalodimas ilias.apalodimas@linaro.org Reviewed-by: Andrew Lunn andrew@lunn.ch Link: https://lore.kernel.org/r/20230731-synquacer-net-v3-1-944be5f06428@kernel.or... Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/socionext/netsec.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/drivers/net/ethernet/socionext/netsec.c b/drivers/net/ethernet/socionext/netsec.c index b9acee214bb6a..bb86315581818 100644 --- a/drivers/net/ethernet/socionext/netsec.c +++ b/drivers/net/ethernet/socionext/netsec.c @@ -1845,6 +1845,17 @@ static int netsec_of_probe(struct platform_device *pdev, return err; }
+ /* + * SynQuacer is physically configured with TX and RX delays + * but the standard firmware claimed otherwise for a long + * time, ignore it. + */ + if (of_machine_is_compatible("socionext,developer-box") && + priv->phy_interface != PHY_INTERFACE_MODE_RGMII_ID) { + dev_warn(&pdev->dev, "Outdated firmware reports incorrect PHY mode, overriding\n"); + priv->phy_interface = PHY_INTERFACE_MODE_RGMII_ID; + } + priv->phy_np = of_parse_phandle(pdev->dev.of_node, "phy-handle", 0); if (!priv->phy_np) { dev_err(&pdev->dev, "missing required property 'phy-handle'\n");