From: Jean-Christophe PLAGNIOL-VILLARD <[email protected]> Allow the device tree to provide the mac address and the phy mode.
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <[email protected]> [[email protected]: change "compatible" node property, doc and DT hwaddr] Signed-off-by: Nicolas Ferre <[email protected]> [[email protected]: add "gem" compatibility strings and doc] Acked-by: Jamie Iles<[email protected]> --- v3: add "gem" compatibility strings v2: modify macb_get_hwaddr_dt() parameter Documentation/devicetree/bindings/net/macb.txt | 24 ++++++++ drivers/net/ethernet/cadence/macb.c | 73 +++++++++++++++++++++--- drivers/net/ethernet/cadence/macb.h | 2 + 3 files changed, 91 insertions(+), 8 deletions(-) create mode 100644 Documentation/devicetree/bindings/net/macb.txt diff --git a/Documentation/devicetree/bindings/net/macb.txt b/Documentation/devicetree/bindings/net/macb.txt new file mode 100644 index 0000000..2e24f05 --- /dev/null +++ b/Documentation/devicetree/bindings/net/macb.txt @@ -0,0 +1,24 @@ +* Cadence MACB/GEM Ethernet controller + +Required properties: +- compatible: Should be "cdns,[<chip>-]{macb|gem}" + Use "cdns,at91sam9260-macb" Atmel at91sam9260 and at91sam9263 SoCs. + Use "cdns,at32ap7000-macb" for other 10/100 usage or use the generic form: "cdns,macb". + Use "cnds,pc302-gem" for Picochip picoXcell pc302 and later devices based on + the Cadence GEM, or the generic form: "cdns,gem". +- reg: Address and length of the register set for the device +- interrupts: Should contain macb interrupt +- phy-mode: String, operation mode of the PHY interface. + Supported values are: "mii", "rmii", "gmii", "rgmii". + +Optional properties: +- local-mac-address: 6 bytes, mac address + +Examples: + + macb0: ethernet@fffc4000 { + compatible = "cdns,at32ap7000-macb"; + reg = <0xfffc4000 0x4000>; + interrupts = <21>; + phy-mode = "rmii"; + }; diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c index 64d6146..baf1a0d 100644 --- a/drivers/net/ethernet/cadence/macb.c +++ b/drivers/net/ethernet/cadence/macb.c @@ -23,6 +23,8 @@ #include <linux/platform_data/macb.h> #include <linux/platform_device.h> #include <linux/phy.h> +#include <linux/of_device.h> +#include <linux/of_net.h> #include "macb.h" @@ -191,7 +193,6 @@ static int macb_mii_probe(struct net_device *dev) { struct macb *bp = netdev_priv(dev); struct phy_device *phydev; - struct macb_platform_data *pdata; int ret; phydev = phy_find_first(bp->mii_bus); @@ -200,14 +201,11 @@ static int macb_mii_probe(struct net_device *dev) return -1; } - pdata = bp->pdev->dev.platform_data; /* TODO : add pin_irq */ /* attach the mac to the phy */ ret = phy_connect_direct(dev, phydev, &macb_handle_link_change, 0, - pdata && pdata->is_rmii ? - PHY_INTERFACE_MODE_RMII : - PHY_INTERFACE_MODE_MII); + bp->phy_interface); if (ret) { netdev_err(dev, "Could not attach to PHY\n"); return ret; @@ -1244,6 +1242,52 @@ static const struct net_device_ops macb_netdev_ops = { #endif }; +#if defined(CONFIG_OF) +static const struct of_device_id macb_dt_ids[] = { + { .compatible = "cdns,at32ap7000-macb" }, + { .compatible = "cdns,at91sam9260-macb" }, + { .compatible = "cdns,macb" }, + { .compatible = "cdns,pc302-gem" }, + { .compatible = "cdns,gem" }, + { /* sentinel */ } +}; + +MODULE_DEVICE_TABLE(of, macb_dt_ids); + +static int __devinit macb_get_phy_mode_dt(struct platform_device *pdev) +{ + struct device_node *np = pdev->dev.of_node; + + if (np) + return of_get_phy_mode(np); + + return -ENODEV; +} + +static int __devinit macb_get_hwaddr_dt(struct macb *bp) +{ + struct device_node *np = bp->pdev->dev.of_node; + if (np) { + const char *mac = of_get_mac_address(np); + if (mac) { + memcpy(bp->dev->dev_addr, mac, ETH_ALEN); + return 0; + } + } + + return -ENODEV; +} +#else +static int __devinit macb_get_phy_mode_dt(struct platform_device *pdev) +{ + return -ENODEV; +} +static int __devinit macb_get_hwaddr_dt(struct macb *bp) +{ + return -ENODEV; +} +#endif + static int __init macb_probe(struct platform_device *pdev) { struct macb_platform_data *pdata; @@ -1318,10 +1362,22 @@ static int __init macb_probe(struct platform_device *pdev) config |= macb_dbw(bp); macb_writel(bp, NCFGR, config); - macb_get_hwaddr(bp); - pdata = pdev->dev.platform_data; + err = macb_get_hwaddr_dt(bp); + if (err < 0) + macb_get_hwaddr(bp); + + err = macb_get_phy_mode_dt(pdev); + if (err < 0) { + pdata = pdev->dev.platform_data; + if (pdata && pdata->is_rmii) + bp->phy_interface = PHY_INTERFACE_MODE_RMII; + else + bp->phy_interface = PHY_INTERFACE_MODE_MII; + } else { + bp->phy_interface = err; + } - if (pdata && pdata->is_rmii) + if (bp->phy_interface == PHY_INTERFACE_MODE_RMII) #if defined(CONFIG_ARCH_AT91) macb_or_gem_writel(bp, USRIO, (MACB_BIT(RMII) | MACB_BIT(CLKEN))); @@ -1444,6 +1500,7 @@ static struct platform_driver macb_driver = { .driver = { .name = "macb", .owner = THIS_MODULE, + .of_match_table = of_match_ptr(macb_dt_ids), }, }; diff --git a/drivers/net/ethernet/cadence/macb.h b/drivers/net/ethernet/cadence/macb.h index 1931078..335e288 100644 --- a/drivers/net/ethernet/cadence/macb.h +++ b/drivers/net/ethernet/cadence/macb.h @@ -532,6 +532,8 @@ struct macb { unsigned int link; unsigned int speed; unsigned int duplex; + + phy_interface_t phy_interface; }; static inline bool macb_is_gem(struct macb *bp) -- 1.7.5.4 _______________________________________________ devicetree-discuss mailing list [email protected] https://lists.ozlabs.org/listinfo/devicetree-discuss
