Re: [RFC PATCH 02/10] net: ti: prueth: Adds ICSSM Ethernet driver
From: Basharath Hussain Khaja <hidden>
Date: 2025-01-22 15:33:44
Also in:
linux-arm-kernel, linux-devicetree, linux-omap, lkml
quoted
+ emac->phy_node = of_parse_phandle(eth_node, "phy-handle", 0); + if (!emac->phy_node) { + dev_err(prueth->dev, "couldn't find phy-handle\n"); + ret = -ENODEV; + goto free; + } + + ret = of_get_phy_mode(eth_node, &emac->phy_if); + if (ret) { + dev_err(prueth->dev, "could not get phy-mode property err %d\n", + ret); + goto free; + } + + /* connect PHY */ + emac->phydev = of_phy_connect(ndev, emac->phy_node, + &icssm_emac_adjust_link, 0, emac->phy_if); + if (!emac->phydev) { + dev_dbg(prueth->dev, "couldn't connect to phy %s\n", + emac->phy_node->full_name); + ret = -EPROBE_DEFER; + goto free; + }of_phy_get_and_connect() will simplify this.
Yes. This API does same functionality, we will replace three APIs with single API in the next version.
quoted
+ /* remove unsupported modes */ + phy_remove_link_mode(emac->phydev, ETHTOOL_LINK_MODE_10baseT_Half_BIT); + phy_remove_link_mode(emac->phydev, ETHTOOL_LINK_MODE_10baseT_Full_BIT);It only does 100Mbps?
It is capable of both 100M/10M full/half-duplex modes. In this patch series we are adding support for 100M full duplex operation. Support for other modes will be added subsequently.
quoted
+ if (of_property_read_bool(eth_node, "ti,no-half-duplex")) {Is this becasue 100baseT_Half is broken in some versions of the hardware?
No.This property will be removed as we have added support only for 100M full duplex.
quoted
+ phy_remove_link_mode(emac->phydev, + ETHTOOL_LINK_MODE_100baseT_Half_BIT); + } + + phy_remove_link_mode(emac->phydev, ETHTOOL_LINK_MODE_Pause_BIT); + phy_remove_link_mode(emac->phydev, ETHTOOL_LINK_MODE_Asym_Pause_BIT);Is this really needed? I've not checked, but if you don't call phy_support_sym_pause() or phy_support_asym_pause(), i would of expected phylib to default to no pause?
Though TI PHY default state is clear(ASM_DIR - 0 & PAUSE - 0 as Default state in ANAR register), this bits are cleared again to handle if in case of change in PHY.
quoted
+static const struct of_device_id prueth_dt_match[];Please avoid forward references. If you need the match table, define it here.
Sure. This got escaped while cleanup. We will address this in the next version. Thanks & Best Regards, Basharath