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We > need to add corresponding netc_devinfo data for each version. The NETC > version of i.MX94 is v4.3, which is different from i.MX95. Currently, > the patch adds the following configurations for ENETCs. > > 1. Set the link's MII protocol. > 2. ENETC 0 (MAC 3) and the switch port 2 (MAC 2) share the same parallel > interface, but due to SoC constraint, they cannot be used simultaneously. > Since the switch is not supported yet, so the interface is assigned to > ENETC 0 by default. > > The switch configuration will be added separately in a subsequent patch. > > Signed-off-by: Wei Fang Reviewed-by: Frank Li > --- > .../ethernet/freescale/enetc/netc_blk_ctrl.c | 104 ++++++++++++++++++ > 1 file changed, 104 insertions(+) > > diff --git a/drivers/net/ethernet/freescale/enetc/netc_blk_ctrl.c b/drivers/net/ethernet/freescale/enetc/netc_blk_ctrl.c > index bcb8eefeb93c..5978ea096e80 100644 > --- a/drivers/net/ethernet/freescale/enetc/netc_blk_ctrl.c > +++ b/drivers/net/ethernet/freescale/enetc/netc_blk_ctrl.c > @@ -47,6 +47,13 @@ > #define PCS_PROT_SFI BIT(4) > #define PCS_PROT_10G_SXGMII BIT(6) > > +#define IMX94_EXT_PIN_CONTROL 0x10 > +#define MAC2_MAC3_SEL BIT(1) > + > +#define IMX94_NETC_LINK_CFG(a) (0x4c + (a) * 4) > +#define NETC_LINK_CFG_MII_PROT GENMASK(3, 0) > +#define NETC_LINK_CFG_IO_VAR GENMASK(19, 16) > + > /* NETC privileged register block register */ > #define PRB_NETCRR 0x100 > #define NETCRR_SR BIT(0) > @@ -68,6 +75,13 @@ > #define IMX95_ENETC1_BUS_DEVFN 0x40 > #define IMX95_ENETC2_BUS_DEVFN 0x80 > > +#define IMX94_ENETC0_BUS_DEVFN 0x100 > +#define IMX94_ENETC1_BUS_DEVFN 0x140 > +#define IMX94_ENETC2_BUS_DEVFN 0x180 > +#define IMX94_ENETC0_LINK 3 > +#define IMX94_ENETC1_LINK 4 > +#define IMX94_ENETC2_LINK 5 > + > /* Flags for different platforms */ > #define NETC_HAS_NETCMIX BIT(0) > > @@ -192,6 +206,90 @@ static int imx95_netcmix_init(struct platform_device *pdev) > return 0; > } > > +static int imx94_enetc_get_link_id(struct device_node *np) > +{ > + int bus_devfn = netc_of_pci_get_bus_devfn(np); > + > + /* Parse ENETC link number */ > + switch (bus_devfn) { > + case IMX94_ENETC0_BUS_DEVFN: > + return IMX94_ENETC0_LINK; > + case IMX94_ENETC1_BUS_DEVFN: > + return IMX94_ENETC1_LINK; > + case IMX94_ENETC2_BUS_DEVFN: > + return IMX94_ENETC2_LINK; > + default: > + return -EINVAL; > + } > +} > + > +static int imx94_link_config(struct netc_blk_ctrl *priv, > + struct device_node *np, int link_id) > +{ > + phy_interface_t interface; > + int mii_proto; > + u32 val; > + > + /* The node may be disabled and does not have a 'phy-mode' > + * or 'phy-connection-type' property. > + */ > + if (of_get_phy_mode(np, &interface)) > + return 0; > + > + mii_proto = netc_get_link_mii_protocol(interface); > + if (mii_proto < 0) > + return mii_proto; > + > + val = mii_proto & NETC_LINK_CFG_MII_PROT; > + if (val == MII_PROT_SERIAL) > + val = u32_replace_bits(val, IO_VAR_16FF_16G_SERDES, > + NETC_LINK_CFG_IO_VAR); > + > + netc_reg_write(priv->netcmix, IMX94_NETC_LINK_CFG(link_id), val); > + > + return 0; > +} > + > +static int imx94_enetc_link_config(struct netc_blk_ctrl *priv, > + struct device_node *np) > +{ > + int link_id = imx94_enetc_get_link_id(np); > + > + if (link_id < 0) > + return link_id; > + > + return imx94_link_config(priv, np, link_id); > +} > + > +static int imx94_netcmix_init(struct platform_device *pdev) > +{ > + struct netc_blk_ctrl *priv = platform_get_drvdata(pdev); > + struct device_node *np = pdev->dev.of_node; > + u32 val; > + int err; > + > + for_each_child_of_node_scoped(np, child) { > + for_each_child_of_node_scoped(child, gchild) { > + if (!of_device_is_compatible(gchild, "pci1131,e101")) > + continue; > + > + err = imx94_enetc_link_config(priv, gchild); > + if (err) > + return err; > + } > + } > + > + /* ENETC 0 and switch port 2 share the same parallel interface. > + * Currently, the switch is not supported, so this interface is > + * used by ENETC 0 by default. > + */ > + val = netc_reg_read(priv->netcmix, IMX94_EXT_PIN_CONTROL); > + val |= MAC2_MAC3_SEL; > + netc_reg_write(priv->netcmix, IMX94_EXT_PIN_CONTROL, val); > + > + return 0; > +} > + > static bool netc_ierb_is_locked(struct netc_blk_ctrl *priv) > { > return !!(netc_reg_read(priv->prb, PRB_NETCRR) & NETCRR_LOCK); > @@ -340,8 +438,14 @@ static const struct netc_devinfo imx95_devinfo = { > .ierb_init = imx95_ierb_init, > }; > > +static const struct netc_devinfo imx94_devinfo = { > + .flags = NETC_HAS_NETCMIX, > + .netcmix_init = imx94_netcmix_init, > +}; > + > static const struct of_device_id netc_blk_ctrl_match[] = { > { .compatible = "nxp,imx95-netc-blk-ctrl", .data = &imx95_devinfo }, > + { .compatible = "nxp,imx94-netc-blk-ctrl", .data = &imx94_devinfo }, > {}, > }; > MODULE_DEVICE_TABLE(of, netc_blk_ctrl_match); > -- > 2.34.1 >