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Commit c25b23b8 authored by Rafał Miłecki's avatar Rafał Miłecki Committed by David S. Miller
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bgmac: register fixed PHY for ARM BCM470X / BCM5301X chipsets 



On ARM SoCs with bgmac Ethernet hardware we don't have any normal PHY.
There is always a switch attached but it's not even controlled over MDIO
like in case of MIPS devices.
We need a fixed PHY to be able to send/receive packets from the switch.

Signed-off-by: default avatarRafał Miłecki <zajec5@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent df814d96

drivers/net/ethernet/broadcom/bgmac.c

+34 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ 
#include <linux/etherdevice.h>

#include <linux/mii.h>

#include <linux/phy.h>

#include <linux/phy_fixed.h>

#include <linux/interrupt.h>

#include <linux/dma-mapping.h>

#include <bcm47xx_nvram.h>
@@ -1330,13 +1331,46 @@ static void bgmac_adjust_link(struct net_device *net_dev) 
	}

}



static int bgmac_fixed_phy_register(struct bgmac *bgmac)

{

	struct fixed_phy_status fphy_status = {

		.link = 1,

		.speed = SPEED_1000,

		.duplex = DUPLEX_FULL,

	};

	struct phy_device *phy_dev;

	int err;



	phy_dev = fixed_phy_register(PHY_POLL, &fphy_status, NULL);

	if (!phy_dev || IS_ERR(phy_dev)) {

		bgmac_err(bgmac, "Failed to register fixed PHY device\n");

		return -ENODEV;

	}



	err = phy_connect_direct(bgmac->net_dev, phy_dev, bgmac_adjust_link,

				 PHY_INTERFACE_MODE_MII);

	if (err) {

		bgmac_err(bgmac, "Connecting PHY failed\n");

		return err;

	}



	bgmac->phy_dev = phy_dev;



	return err;

}



static int bgmac_mii_register(struct bgmac *bgmac)

{

	struct bcma_chipinfo *ci = &bgmac->core->bus->chipinfo;

	struct mii_bus *mii_bus;

	struct phy_device *phy_dev;

	char bus_id[MII_BUS_ID_SIZE + 3];

	int i, err = 0;



	if (ci->id == BCMA_CHIP_ID_BCM4707 ||

	    ci->id == BCMA_CHIP_ID_BCM53018)

		return bgmac_fixed_phy_register(bgmac);



	mii_bus = mdiobus_alloc();

	if (!mii_bus)

		return -ENOMEM;