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From c25b23b8a387e7d31f7a74af8e37b61e9e6ebb21 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
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Date: Fri, 20 Mar 2015 23:14:31 +0100
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Subject: [PATCH] bgmac: register fixed PHY for ARM BCM470X / BCM5301X chipsets
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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On ARM SoCs with bgmac Ethernet hardware we don't have any normal PHY.
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There is always a switch attached but it's not even controlled over MDIO
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like in case of MIPS devices.
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We need a fixed PHY to be able to send/receive packets from the switch.
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Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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drivers/net/ethernet/broadcom/bgmac.c | 34 ++++++++++++++++++++++++++++++++++
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1 file changed, 34 insertions(+)
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--- a/drivers/net/ethernet/broadcom/bgmac.c
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+++ b/drivers/net/ethernet/broadcom/bgmac.c
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@@ -14,6 +14,7 @@
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#include <linux/etherdevice.h>
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#include <linux/mii.h>
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#include <linux/phy.h>
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+#include <linux/phy_fixed.h>
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#include <linux/interrupt.h>
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#include <linux/dma-mapping.h>
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#include <bcm47xx_nvram.h>
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@@ -1330,13 +1331,46 @@ static void bgmac_adjust_link(struct net
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}
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}
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+static int bgmac_fixed_phy_register(struct bgmac *bgmac)
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+{
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+ struct fixed_phy_status fphy_status = {
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+ .link = 1,
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+ .speed = SPEED_1000,
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+ .duplex = DUPLEX_FULL,
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+ };
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+ struct phy_device *phy_dev;
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+ int err;
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+
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+ phy_dev = fixed_phy_register(PHY_POLL, &fphy_status, NULL);
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+ if (!phy_dev || IS_ERR(phy_dev)) {
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+ bgmac_err(bgmac, "Failed to register fixed PHY device\n");
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+ return -ENODEV;
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+ }
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+
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+ err = phy_connect_direct(bgmac->net_dev, phy_dev, bgmac_adjust_link,
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+ PHY_INTERFACE_MODE_MII);
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+ if (err) {
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+ bgmac_err(bgmac, "Connecting PHY failed\n");
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+ return err;
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+ }
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+
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+ bgmac->phy_dev = phy_dev;
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+
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+ return err;
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+}
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+
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static int bgmac_mii_register(struct bgmac *bgmac)
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{
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+ struct bcma_chipinfo *ci = &bgmac->core->bus->chipinfo;
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struct mii_bus *mii_bus;
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struct phy_device *phy_dev;
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char bus_id[MII_BUS_ID_SIZE + 3];
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int i, err = 0;
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+ if (ci->id == BCMA_CHIP_ID_BCM4707 ||
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+ ci->id == BCMA_CHIP_ID_BCM53018)
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+ return bgmac_fixed_phy_register(bgmac);
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+
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mii_bus = mdiobus_alloc();
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if (!mii_bus)
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return -ENOMEM;
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