kernel: backport bgmac support for external PHYs

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

5 files changed, 540 insertions, 4 deletions

diff --git a/target/linux/generic/patches-4.4/072-net-add-devm-version-of-alloc_etherdev_mqs-function.patch b/target/linux/generic/patches-4.4/072-net-add-devm-version-of-alloc_etherdev_mqs-function.patch
new file mode 100644
index 0000000000..1d44d487c7
--- /dev/null
+++ b/target/linux/generic/patches-4.4/072-net-add-devm-version-of-alloc_etherdev_mqs-function.patch
@@ -0,0 +1,70 @@
+From 40be0dda0725886b623d67868db3219a2e74683b Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Sat, 28 Jan 2017 15:15:42 +0100
+Subject: [PATCH] net: add devm version of alloc_etherdev_mqs function
+
+This patch adds devm_alloc_etherdev_mqs function and devm_alloc_etherdev
+macro. These can be used for simpler netdev allocation without having to
+care about calling free_netdev.
+
+Thanks to this change drivers, their error paths and removal paths may
+get simpler by a bit.
+
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ include/linux/etherdevice.h |  5 +++++
+ net/ethernet/eth.c          | 28 ++++++++++++++++++++++++++++
+ 2 files changed, 33 insertions(+)
+
+--- a/include/linux/etherdevice.h
++++ b/include/linux/etherdevice.h
+@@ -51,6 +51,11 @@ struct net_device *alloc_etherdev_mqs(in
+ #define alloc_etherdev(sizeof_priv) alloc_etherdev_mq(sizeof_priv, 1)
+ #define alloc_etherdev_mq(sizeof_priv, count) alloc_etherdev_mqs(sizeof_priv, count, count)
+ 
++struct net_device *devm_alloc_etherdev_mqs(struct device *dev, int sizeof_priv,
++					   unsigned int txqs,
++					   unsigned int rxqs);
++#define devm_alloc_etherdev(dev, sizeof_priv) devm_alloc_etherdev_mqs(dev, sizeof_priv, 1, 1)
++
+ struct sk_buff **eth_gro_receive(struct sk_buff **head,
+ 				 struct sk_buff *skb);
+ int eth_gro_complete(struct sk_buff *skb, int nhoff);
+--- a/net/ethernet/eth.c
++++ b/net/ethernet/eth.c
+@@ -387,6 +387,34 @@ struct net_device *alloc_etherdev_mqs(in
+ }
+ EXPORT_SYMBOL(alloc_etherdev_mqs);
+ 
++static void devm_free_netdev(struct device *dev, void *res)
++{
++	free_netdev(*(struct net_device **)res);
++}
++
++struct net_device *devm_alloc_etherdev_mqs(struct device *dev, int sizeof_priv,
++					   unsigned int txqs, unsigned int rxqs)
++{
++	struct net_device **dr;
++	struct net_device *netdev;
++
++	dr = devres_alloc(devm_free_netdev, sizeof(*dr), GFP_KERNEL);
++	if (!dr)
++		return NULL;
++
++	netdev = alloc_etherdev_mqs(sizeof_priv, txqs, rxqs);
++	if (!netdev) {
++		devres_free(dr);
++		return NULL;
++	}
++
++	*dr = netdev;
++	devres_add(dev, dr);
++
++	return netdev;
++}
++EXPORT_SYMBOL(devm_alloc_etherdev_mqs);
++
+ ssize_t sysfs_format_mac(char *buf, const unsigned char *addr, int len)
+ {
+ 	return scnprintf(buf, PAGE_SIZE, "%*phC\n", len, addr);
diff --git a/target/linux/generic/patches-4.4/073-v4.10-0001-net-bgmac-allocate-struct-bgmac-just-once-don-t-copy.patch b/target/linux/generic/patches-4.4/073-v4.10-0001-net-bgmac-allocate-struct-bgmac-just-once-don-t-copy.patch
new file mode 100644
index 0000000000..544a074a78
--- /dev/null
+++ b/target/linux/generic/patches-4.4/073-v4.10-0001-net-bgmac-allocate-struct-bgmac-just-once-don-t-copy.patch
@@ -0,0 +1,139 @@
+From 34a5102c3235c470a6c77fba16cb971964d9c136 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Tue, 31 Jan 2017 19:37:54 +0100
+Subject: [PATCH 1/3] net: bgmac: allocate struct bgmac just once & don't copy
+ it
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+So far were were allocating struct bgmac in 3 places: platform code,
+bcma code and shared bgmac_enet_probe function. The reason for this was
+bgmac_enet_probe:
+1) Requiring early-filled struct bgmac
+2) Calling alloc_etherdev on its own in order to use netdev_priv later
+
+This solution got few drawbacks:
+1) Was duplicating allocating code
+2) Required copying early-filled struct
+3) Resulted in platform/bcma code having access only to unused struct
+
+Solve this situation by simply extracting some probe code into the new
+bgmac_alloc function.
+
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/ethernet/broadcom/bgmac-bcma.c     |  4 +---
+ drivers/net/ethernet/broadcom/bgmac-platform.c |  2 +-
+ drivers/net/ethernet/broadcom/bgmac.c          | 25 +++++++++++++++++--------
+ drivers/net/ethernet/broadcom/bgmac.h          |  3 ++-
+ 4 files changed, 21 insertions(+), 13 deletions(-)
+
+--- a/drivers/net/ethernet/broadcom/bgmac-bcma.c
++++ b/drivers/net/ethernet/broadcom/bgmac-bcma.c
+@@ -99,12 +99,11 @@ static int bgmac_probe(struct bcma_devic
+ 	u8 *mac;
+ 	int err;
+ 
+-	bgmac = kzalloc(sizeof(*bgmac), GFP_KERNEL);
++	bgmac = bgmac_alloc(&core->dev);
+ 	if (!bgmac)
+ 		return -ENOMEM;
+ 
+ 	bgmac->bcma.core = core;
+-	bgmac->dev = &core->dev;
+ 	bgmac->dma_dev = core->dma_dev;
+ 	bgmac->irq = core->irq;
+ 
+@@ -285,7 +284,6 @@ static int bgmac_probe(struct bcma_devic
+ err1:
+ 	bcma_mdio_mii_unregister(bgmac->mii_bus);
+ err:
+-	kfree(bgmac);
+ 	bcma_set_drvdata(core, NULL);
+ 
+ 	return err;
+--- a/drivers/net/ethernet/broadcom/bgmac-platform.c
++++ b/drivers/net/ethernet/broadcom/bgmac-platform.c
+@@ -93,7 +93,7 @@ static int bgmac_probe(struct platform_d
+ 	struct resource *regs;
+ 	const u8 *mac_addr;
+ 
+-	bgmac = devm_kzalloc(&pdev->dev, sizeof(*bgmac), GFP_KERNEL);
++	bgmac = bgmac_alloc(&pdev->dev);
+ 	if (!bgmac)
+ 		return -ENOMEM;
+ 
+--- a/drivers/net/ethernet/broadcom/bgmac.c
++++ b/drivers/net/ethernet/broadcom/bgmac.c
+@@ -1475,22 +1475,32 @@ static int bgmac_phy_connect(struct bgma
+ 	return 0;
+ }
+ 
+-int bgmac_enet_probe(struct bgmac *info)
++struct bgmac *bgmac_alloc(struct device *dev)
+ {
+ 	struct net_device *net_dev;
+ 	struct bgmac *bgmac;
+-	int err;
+ 
+ 	/* Allocation and references */
+-	net_dev = alloc_etherdev(sizeof(*bgmac));
++	net_dev = devm_alloc_etherdev(dev, sizeof(*bgmac));
+ 	if (!net_dev)
+-		return -ENOMEM;
++		return NULL;
+ 
+ 	net_dev->netdev_ops = &bgmac_netdev_ops;
+ 	net_dev->ethtool_ops = &bgmac_ethtool_ops;
++
+ 	bgmac = netdev_priv(net_dev);
+-	memcpy(bgmac, info, sizeof(*bgmac));
++	bgmac->dev = dev;
+ 	bgmac->net_dev = net_dev;
++
++	return bgmac;
++}
++EXPORT_SYMBOL_GPL(bgmac_alloc);
++
++int bgmac_enet_probe(struct bgmac *bgmac)
++{
++	struct net_device *net_dev = bgmac->net_dev;
++	int err;
++
+ 	net_dev->irq = bgmac->irq;
+ 	SET_NETDEV_DEV(net_dev, bgmac->dev);
+ 
+@@ -1517,7 +1527,7 @@ int bgmac_enet_probe(struct bgmac *info)
+ 	err = bgmac_dma_alloc(bgmac);
+ 	if (err) {
+ 		dev_err(bgmac->dev, "Unable to alloc memory for DMA\n");
+-		goto err_netdev_free;
++		goto err_out;
+ 	}
+ 
+ 	bgmac->int_mask = BGMAC_IS_ERRMASK | BGMAC_IS_RX | BGMAC_IS_TX_MASK;
+@@ -1553,8 +1563,7 @@ err_phy_disconnect:
+ 	phy_disconnect(net_dev->phydev);
+ err_dma_free:
+ 	bgmac_dma_free(bgmac);
+-err_netdev_free:
+-	free_netdev(net_dev);
++err_out:
+ 
+ 	return err;
+ }
+--- a/drivers/net/ethernet/broadcom/bgmac.h
++++ b/drivers/net/ethernet/broadcom/bgmac.h
+@@ -515,7 +515,8 @@ struct bgmac {
+ 			      u32 set);
+ };
+ 
+-int bgmac_enet_probe(struct bgmac *info);
++struct bgmac *bgmac_alloc(struct device *dev);
++int bgmac_enet_probe(struct bgmac *bgmac);
+ void bgmac_enet_remove(struct bgmac *bgmac);
+ 
+ struct mii_bus *bcma_mdio_mii_register(struct bcma_device *core, u8 phyaddr);
diff --git a/target/linux/generic/patches-4.4/073-v4.10-0002-net-bgmac-drop-struct-bcma_mdio-we-don-t-need-anymor.patch b/target/linux/generic/patches-4.4/073-v4.10-0002-net-bgmac-drop-struct-bcma_mdio-we-don-t-need-anymor.patch
new file mode 100644
index 0000000000..8848f619ea
--- /dev/null
+++ b/target/linux/generic/patches-4.4/073-v4.10-0002-net-bgmac-drop-struct-bcma_mdio-we-don-t-need-anymor.patch
@@ -0,0 +1,274 @@
+From aa8863e5d49417094b9457a0d53e8505e95a1863 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Tue, 31 Jan 2017 19:37:55 +0100
+Subject: [PATCH 2/3] net: bgmac: drop struct bcma_mdio we don't need anymore
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Adding struct bcma_mdio was a workaround for bcma code not having access
+to the struct bgmac used in the core code. Now we don't duplicate this
+struct we can just use it internally in bcma code.
+
+This simplifies code & allows access to all bgmac driver details from
+all places in bcma code.
+
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/ethernet/broadcom/bgmac-bcma-mdio.c | 98 ++++++++++---------------
+ drivers/net/ethernet/broadcom/bgmac-bcma.c      |  2 +-
+ drivers/net/ethernet/broadcom/bgmac.h           |  2 +-
+ 3 files changed, 42 insertions(+), 60 deletions(-)
+
+--- a/drivers/net/ethernet/broadcom/bgmac-bcma-mdio.c
++++ b/drivers/net/ethernet/broadcom/bgmac-bcma-mdio.c
+@@ -12,11 +12,6 @@
+ #include <linux/brcmphy.h>
+ #include "bgmac.h"
+ 
+-struct bcma_mdio {
+-	struct bcma_device *core;
+-	u8 phyaddr;
+-};
+-
+ static bool bcma_mdio_wait_value(struct bcma_device *core, u16 reg, u32 mask,
+ 				 u32 value, int timeout)
+ {
+@@ -37,7 +32,7 @@ static bool bcma_mdio_wait_value(struct
+  * PHY ops
+  **************************************************/
+ 
+-static u16 bcma_mdio_phy_read(struct bcma_mdio *bcma_mdio, u8 phyaddr, u8 reg)
++static u16 bcma_mdio_phy_read(struct bgmac *bgmac, u8 phyaddr, u8 reg)
+ {
+ 	struct bcma_device *core;
+ 	u16 phy_access_addr;
+@@ -56,12 +51,12 @@ static u16 bcma_mdio_phy_read(struct bcm
+ 	BUILD_BUG_ON(BGMAC_PC_MCT_SHIFT != BCMA_GMAC_CMN_PC_MCT_SHIFT);
+ 	BUILD_BUG_ON(BGMAC_PC_MTE != BCMA_GMAC_CMN_PC_MTE);
+ 
+-	if (bcma_mdio->core->id.id == BCMA_CORE_4706_MAC_GBIT) {
+-		core = bcma_mdio->core->bus->drv_gmac_cmn.core;
++	if (bgmac->bcma.core->id.id == BCMA_CORE_4706_MAC_GBIT) {
++		core = bgmac->bcma.core->bus->drv_gmac_cmn.core;
+ 		phy_access_addr = BCMA_GMAC_CMN_PHY_ACCESS;
+ 		phy_ctl_addr = BCMA_GMAC_CMN_PHY_CTL;
+ 	} else {
+-		core = bcma_mdio->core;
++		core = bgmac->bcma.core;
+ 		phy_access_addr = BGMAC_PHY_ACCESS;
+ 		phy_ctl_addr = BGMAC_PHY_CNTL;
+ 	}
+@@ -87,7 +82,7 @@ static u16 bcma_mdio_phy_read(struct bcm
+ }
+ 
+ /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipphywr */
+-static int bcma_mdio_phy_write(struct bcma_mdio *bcma_mdio, u8 phyaddr, u8 reg,
++static int bcma_mdio_phy_write(struct bgmac *bgmac, u8 phyaddr, u8 reg,
+ 			       u16 value)
+ {
+ 	struct bcma_device *core;
+@@ -95,12 +90,12 @@ static int bcma_mdio_phy_write(struct bc
+ 	u16 phy_ctl_addr;
+ 	u32 tmp;
+ 
+-	if (bcma_mdio->core->id.id == BCMA_CORE_4706_MAC_GBIT) {
+-		core = bcma_mdio->core->bus->drv_gmac_cmn.core;
++	if (bgmac->bcma.core->id.id == BCMA_CORE_4706_MAC_GBIT) {
++		core = bgmac->bcma.core->bus->drv_gmac_cmn.core;
+ 		phy_access_addr = BCMA_GMAC_CMN_PHY_ACCESS;
+ 		phy_ctl_addr = BCMA_GMAC_CMN_PHY_CTL;
+ 	} else {
+-		core = bcma_mdio->core;
++		core = bgmac->bcma.core;
+ 		phy_access_addr = BGMAC_PHY_ACCESS;
+ 		phy_ctl_addr = BGMAC_PHY_CNTL;
+ 	}
+@@ -110,8 +105,8 @@ static int bcma_mdio_phy_write(struct bc
+ 	tmp |= phyaddr;
+ 	bcma_write32(core, phy_ctl_addr, tmp);
+ 
+-	bcma_write32(bcma_mdio->core, BGMAC_INT_STATUS, BGMAC_IS_MDIO);
+-	if (bcma_read32(bcma_mdio->core, BGMAC_INT_STATUS) & BGMAC_IS_MDIO)
++	bcma_write32(bgmac->bcma.core, BGMAC_INT_STATUS, BGMAC_IS_MDIO);
++	if (bcma_read32(bgmac->bcma.core, BGMAC_INT_STATUS) & BGMAC_IS_MDIO)
+ 		dev_warn(&core->dev, "Error setting MDIO int\n");
+ 
+ 	tmp = BGMAC_PA_START;
+@@ -132,39 +127,39 @@ static int bcma_mdio_phy_write(struct bc
+ }
+ 
+ /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipphyinit */
+-static void bcma_mdio_phy_init(struct bcma_mdio *bcma_mdio)
++static void bcma_mdio_phy_init(struct bgmac *bgmac)
+ {
+-	struct bcma_chipinfo *ci = &bcma_mdio->core->bus->chipinfo;
++	struct bcma_chipinfo *ci = &bgmac->bcma.core->bus->chipinfo;
+ 	u8 i;
+ 
+ 	if (ci->id == BCMA_CHIP_ID_BCM5356) {
+ 		for (i = 0; i < 5; i++) {
+-			bcma_mdio_phy_write(bcma_mdio, i, 0x1f, 0x008b);
+-			bcma_mdio_phy_write(bcma_mdio, i, 0x15, 0x0100);
+-			bcma_mdio_phy_write(bcma_mdio, i, 0x1f, 0x000f);
+-			bcma_mdio_phy_write(bcma_mdio, i, 0x12, 0x2aaa);
+-			bcma_mdio_phy_write(bcma_mdio, i, 0x1f, 0x000b);
++			bcma_mdio_phy_write(bgmac, i, 0x1f, 0x008b);
++			bcma_mdio_phy_write(bgmac, i, 0x15, 0x0100);
++			bcma_mdio_phy_write(bgmac, i, 0x1f, 0x000f);
++			bcma_mdio_phy_write(bgmac, i, 0x12, 0x2aaa);
++			bcma_mdio_phy_write(bgmac, i, 0x1f, 0x000b);
+ 		}
+ 	}
+ 	if ((ci->id == BCMA_CHIP_ID_BCM5357 && ci->pkg != 10) ||
+ 	    (ci->id == BCMA_CHIP_ID_BCM4749 && ci->pkg != 10) ||
+ 	    (ci->id == BCMA_CHIP_ID_BCM53572 && ci->pkg != 9)) {
+-		struct bcma_drv_cc *cc = &bcma_mdio->core->bus->drv_cc;
++		struct bcma_drv_cc *cc = &bgmac->bcma.core->bus->drv_cc;
+ 
+ 		bcma_chipco_chipctl_maskset(cc, 2, ~0xc0000000, 0);
+ 		bcma_chipco_chipctl_maskset(cc, 4, ~0x80000000, 0);
+ 		for (i = 0; i < 5; i++) {
+-			bcma_mdio_phy_write(bcma_mdio, i, 0x1f, 0x000f);
+-			bcma_mdio_phy_write(bcma_mdio, i, 0x16, 0x5284);
+-			bcma_mdio_phy_write(bcma_mdio, i, 0x1f, 0x000b);
+-			bcma_mdio_phy_write(bcma_mdio, i, 0x17, 0x0010);
+-			bcma_mdio_phy_write(bcma_mdio, i, 0x1f, 0x000f);
+-			bcma_mdio_phy_write(bcma_mdio, i, 0x16, 0x5296);
+-			bcma_mdio_phy_write(bcma_mdio, i, 0x17, 0x1073);
+-			bcma_mdio_phy_write(bcma_mdio, i, 0x17, 0x9073);
+-			bcma_mdio_phy_write(bcma_mdio, i, 0x16, 0x52b6);
+-			bcma_mdio_phy_write(bcma_mdio, i, 0x17, 0x9273);
+-			bcma_mdio_phy_write(bcma_mdio, i, 0x1f, 0x000b);
++			bcma_mdio_phy_write(bgmac, i, 0x1f, 0x000f);
++			bcma_mdio_phy_write(bgmac, i, 0x16, 0x5284);
++			bcma_mdio_phy_write(bgmac, i, 0x1f, 0x000b);
++			bcma_mdio_phy_write(bgmac, i, 0x17, 0x0010);
++			bcma_mdio_phy_write(bgmac, i, 0x1f, 0x000f);
++			bcma_mdio_phy_write(bgmac, i, 0x16, 0x5296);
++			bcma_mdio_phy_write(bgmac, i, 0x17, 0x1073);
++			bcma_mdio_phy_write(bgmac, i, 0x17, 0x9073);
++			bcma_mdio_phy_write(bgmac, i, 0x16, 0x52b6);
++			bcma_mdio_phy_write(bgmac, i, 0x17, 0x9273);
++			bcma_mdio_phy_write(bgmac, i, 0x1f, 0x000b);
+ 		}
+ 	}
+ }
+@@ -172,17 +167,17 @@ static void bcma_mdio_phy_init(struct bc
+ /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipphyreset */
+ static int bcma_mdio_phy_reset(struct mii_bus *bus)
+ {
+-	struct bcma_mdio *bcma_mdio = bus->priv;
+-	u8 phyaddr = bcma_mdio->phyaddr;
++	struct bgmac *bgmac = bus->priv;
++	u8 phyaddr = bgmac->phyaddr;
+ 
+-	if (bcma_mdio->phyaddr == BGMAC_PHY_NOREGS)
++	if (phyaddr == BGMAC_PHY_NOREGS)
+ 		return 0;
+ 
+-	bcma_mdio_phy_write(bcma_mdio, phyaddr, MII_BMCR, BMCR_RESET);
++	bcma_mdio_phy_write(bgmac, phyaddr, MII_BMCR, BMCR_RESET);
+ 	udelay(100);
+-	if (bcma_mdio_phy_read(bcma_mdio, phyaddr, MII_BMCR) & BMCR_RESET)
+-		dev_err(&bcma_mdio->core->dev, "PHY reset failed\n");
+-	bcma_mdio_phy_init(bcma_mdio);
++	if (bcma_mdio_phy_read(bgmac, phyaddr, MII_BMCR) & BMCR_RESET)
++		dev_err(bgmac->dev, "PHY reset failed\n");
++	bcma_mdio_phy_init(bgmac);
+ 
+ 	return 0;
+ }
+@@ -202,16 +197,12 @@ static int bcma_mdio_mii_write(struct mi
+ 	return bcma_mdio_phy_write(bus->priv, mii_id, regnum, value);
+ }
+ 
+-struct mii_bus *bcma_mdio_mii_register(struct bcma_device *core, u8 phyaddr)
++struct mii_bus *bcma_mdio_mii_register(struct bgmac *bgmac)
+ {
+-	struct bcma_mdio *bcma_mdio;
++	struct bcma_device *core = bgmac->bcma.core;
+ 	struct mii_bus *mii_bus;
+ 	int i, err;
+ 
+-	bcma_mdio = kzalloc(sizeof(*bcma_mdio), GFP_KERNEL);
+-	if (!bcma_mdio)
+-		return ERR_PTR(-ENOMEM);
+-
+ 	mii_bus = mdiobus_alloc();
+ 	if (!mii_bus) {
+ 		err = -ENOMEM;
+@@ -221,12 +212,12 @@ struct mii_bus *bcma_mdio_mii_register(s
+ 	mii_bus->name = "bcma_mdio mii bus";
+ 	sprintf(mii_bus->id, "%s-%d-%d", "bcma_mdio", core->bus->num,
+ 		core->core_unit);
+-	mii_bus->priv = bcma_mdio;
++	mii_bus->priv = bgmac;
+ 	mii_bus->read = bcma_mdio_mii_read;
+ 	mii_bus->write = bcma_mdio_mii_write;
+ 	mii_bus->reset = bcma_mdio_phy_reset;
+ 	mii_bus->parent = &core->dev;
+-	mii_bus->phy_mask = ~(1 << phyaddr);
++	mii_bus->phy_mask = ~(1 << bgmac->phyaddr);
+  
+ 	mii_bus->irq = kmalloc_array(PHY_MAX_ADDR, sizeof(int), GFP_KERNEL);
+ 	if (!mii_bus->irq) {
+@@ -236,9 +227,6 @@ struct mii_bus *bcma_mdio_mii_register(s
+ 	for (i = 0; i < PHY_MAX_ADDR; i++)
+ 		mii_bus->irq[i] = PHY_POLL;
+ 
+-	bcma_mdio->core = core;
+-	bcma_mdio->phyaddr = phyaddr;
+-
+ 	err = mdiobus_register(mii_bus);
+ 	if (err) {
+ 		dev_err(&core->dev, "Registration of mii bus failed\n");
+@@ -252,24 +240,18 @@ err_free_irq:
+ err_free_bus:
+ 	mdiobus_free(mii_bus);
+ err:
+-	kfree(bcma_mdio);
+ 	return ERR_PTR(err);
+ }
+ EXPORT_SYMBOL_GPL(bcma_mdio_mii_register);
+ 
+ void bcma_mdio_mii_unregister(struct mii_bus *mii_bus)
+ {
+-	struct bcma_mdio *bcma_mdio;
+-
+ 	if (!mii_bus)
+ 		return;
+ 
+-	bcma_mdio = mii_bus->priv;
+-
+ 	mdiobus_unregister(mii_bus);
+ 	kfree(mii_bus->irq);
+ 	mdiobus_free(mii_bus);
+-	kfree(bcma_mdio);
+ }
+ EXPORT_SYMBOL_GPL(bcma_mdio_mii_unregister);
+ 
+--- a/drivers/net/ethernet/broadcom/bgmac-bcma.c
++++ b/drivers/net/ethernet/broadcom/bgmac-bcma.c
+@@ -159,7 +159,7 @@ static int bgmac_probe(struct bcma_devic
+ 
+ 	if (!bgmac_is_bcm4707_family(core) &&
+ 	    !(ci->id == BCMA_CHIP_ID_BCM53573 && core->core_unit == 1)) {
+-		mii_bus = bcma_mdio_mii_register(core, bgmac->phyaddr);
++		mii_bus = bcma_mdio_mii_register(bgmac);
+ 		if (IS_ERR(mii_bus)) {
+ 			err = PTR_ERR(mii_bus);
+ 			goto err;
+--- a/drivers/net/ethernet/broadcom/bgmac.h
++++ b/drivers/net/ethernet/broadcom/bgmac.h
+@@ -519,7 +519,7 @@ struct bgmac *bgmac_alloc(struct device
+ int bgmac_enet_probe(struct bgmac *bgmac);
+ void bgmac_enet_remove(struct bgmac *bgmac);
+ 
+-struct mii_bus *bcma_mdio_mii_register(struct bcma_device *core, u8 phyaddr);
++struct mii_bus *bcma_mdio_mii_register(struct bgmac *bgmac);
+ void bcma_mdio_mii_unregister(struct mii_bus *mii_bus);
+ 
+ static inline u32 bgmac_read(struct bgmac *bgmac, u16 offset)
diff --git a/target/linux/generic/patches-4.4/073-v4.10-0003-net-bgmac-use-PHY-subsystem-for-initializing-PHY.patch b/target/linux/generic/patches-4.4/073-v4.10-0003-net-bgmac-use-PHY-subsystem-for-initializing-PHY.patch
new file mode 100644
index 0000000000..d1be3e3f4c
--- /dev/null
+++ b/target/linux/generic/patches-4.4/073-v4.10-0003-net-bgmac-use-PHY-subsystem-for-initializing-PHY.patch
@@ -0,0 +1,53 @@
+From 8e6f31baba7e2c13ab7e954fe6179420a7545a8b Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Tue, 31 Jan 2017 19:37:56 +0100
+Subject: [PATCH 3/3] net: bgmac: use PHY subsystem for initializing PHY
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This adds support for using bgmac with PHYs supported by standalone PHY
+drivers. Having any PHY initialization in bgmac is hacky and shouldn't
+be extended but rather removed if anyone has hardware to test it.
+
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/ethernet/broadcom/bgmac-bcma-mdio.c | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+--- a/drivers/net/ethernet/broadcom/bgmac-bcma-mdio.c
++++ b/drivers/net/ethernet/broadcom/bgmac-bcma-mdio.c
+@@ -132,6 +132,10 @@ static void bcma_mdio_phy_init(struct bg
+ 	struct bcma_chipinfo *ci = &bgmac->bcma.core->bus->chipinfo;
+ 	u8 i;
+ 
++	/* For some legacy hardware we do chipset-based PHY initialization here
++	 * without even detecting PHY ID. It's hacky and should be cleaned as
++	 * soon as someone can test it.
++	 */
+ 	if (ci->id == BCMA_CHIP_ID_BCM5356) {
+ 		for (i = 0; i < 5; i++) {
+ 			bcma_mdio_phy_write(bgmac, i, 0x1f, 0x008b);
+@@ -140,6 +144,7 @@ static void bcma_mdio_phy_init(struct bg
+ 			bcma_mdio_phy_write(bgmac, i, 0x12, 0x2aaa);
+ 			bcma_mdio_phy_write(bgmac, i, 0x1f, 0x000b);
+ 		}
++		return;
+ 	}
+ 	if ((ci->id == BCMA_CHIP_ID_BCM5357 && ci->pkg != 10) ||
+ 	    (ci->id == BCMA_CHIP_ID_BCM4749 && ci->pkg != 10) ||
+@@ -161,7 +166,12 @@ static void bcma_mdio_phy_init(struct bg
+ 			bcma_mdio_phy_write(bgmac, i, 0x17, 0x9273);
+ 			bcma_mdio_phy_write(bgmac, i, 0x1f, 0x000b);
+ 		}
++		return;
+ 	}
++
++	/* For all other hw do initialization using PHY subsystem. */
++	if (bgmac->net_dev && bgmac->net_dev->phydev)
++		phy_init_hw(bgmac->net_dev->phydev);
+ }
+ 
+ /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipphyreset */
diff --git a/target/linux/generic/patches-4.4/773-bgmac-add-srab-switch.patch b/target/linux/generic/patches-4.4/773-bgmac-add-srab-switch.patch
index 990d23dc8e..5e358c38c1 100644
--- a/target/linux/generic/patches-4.4/773-bgmac-add-srab-switch.patch
+++ b/target/linux/generic/patches-4.4/773-bgmac-add-srab-switch.patch
@@ -30,7 +30,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
  /**************************************************
   * MII
   **************************************************/
-@@ -1539,6 +1551,14 @@ int bgmac_enet_probe(struct bgmac *info)
+@@ -1549,6 +1561,14 @@ int bgmac_enet_probe(struct bgmac *bgmac
  	net_dev->hw_features = net_dev->features;
  	net_dev->vlan_features = net_dev->features;
  
@@ -45,7 +45,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
  	err = register_netdev(bgmac->net_dev);
  	if (err) {
  		dev_err(bgmac->dev, "Cannot register net device\n");
-@@ -1562,6 +1582,10 @@ EXPORT_SYMBOL_GPL(bgmac_enet_probe);
+@@ -1571,6 +1591,10 @@ EXPORT_SYMBOL_GPL(bgmac_enet_probe);
  
  void bgmac_enet_remove(struct bgmac *bgmac)
  {
@@ -75,10 +75,10 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
 +	struct platform_device *b53_device;
  };
  
- int bgmac_enet_probe(struct bgmac *info);
+ struct bgmac *bgmac_alloc(struct device *dev);
 --- a/drivers/net/ethernet/broadcom/bgmac-bcma.c
 +++ b/drivers/net/ethernet/broadcom/bgmac-bcma.c
-@@ -231,6 +231,7 @@ static int bgmac_probe(struct bcma_devic
+@@ -230,6 +230,7 @@ static int bgmac_probe(struct bcma_devic
  		bgmac->feature_flags |= BGMAC_FEAT_CLKCTLST;
  		bgmac->feature_flags |= BGMAC_FEAT_NO_RESET;
  		bgmac->feature_flags |= BGMAC_FEAT_FORCE_SPEED_2500;