kernel: bgmac: backport patch switching to feature_flags

It was needed upstream to avoid bcma references in the main code. To
match this new code our patch adding SRAB was also updated.

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

3 files changed, 451 insertions, 5 deletions

diff --git a/target/linux/generic/patches-4.4/071-0000-net-bgmac-clarify-CONFIG_BCMA-dependency.patch b/target/linux/generic/patches-4.4/071-0000-net-bgmac-clarify-CONFIG_BCMA-dependency.patch
new file mode 100644
index 0000000000..cd0d09887f
--- /dev/null
+++ b/target/linux/generic/patches-4.4/071-0000-net-bgmac-clarify-CONFIG_BCMA-dependency.patch
@@ -0,0 +1,46 @@
+From 1f820f538f7396db7fd40684b9c3620816acc5a3 Mon Sep 17 00:00:00 2001
+From: Arnd Bergmann <arnd@arndb.de>
+Date: Fri, 29 Jan 2016 12:39:12 +0100
+Subject: [PATCH] net: bgmac: clarify CONFIG_BCMA dependency
+
+The bgmac driver depends on BCMA_HOST_SOC, which is only used
+when CONFIG_BCMA is enabled. However, it is a bool option and can
+be set when CONFIG_BCMA=m, and then bgmac can be built-in, leading
+to an obvious link error:
+
+drivers/built-in.o: In function `bgmac_init':
+:(.init.text+0x7f2c): undefined reference to `__bcma_driver_register'
+drivers/built-in.o: In function `bgmac_exit':
+:(.exit.text+0x110a): undefined reference to `bcma_driver_unregister'
+
+To avoid this case, we need to depend on both BCMA and BCMA_SOC,
+as this patch does. I'm also trying to make the dependency more
+readable by splitting it into three lines, and adding a COMPILE_TEST
+alternative so we can test-build it in all configurations that
+support BCMA.
+
+The added dependency on FIXED_PHY addresses a related issue where
+we cannot call fixed_phy_register() when CONFIG_FIXED_PHY=m and
+CONFIG_BGMAC=y.
+
+Signed-off-by: Arnd Bergmann <arnd@arndb.de>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/ethernet/broadcom/Kconfig | 5 ++++-
+ 1 file changed, 4 insertions(+), 1 deletion(-)
+
+--- a/drivers/net/ethernet/broadcom/Kconfig
++++ b/drivers/net/ethernet/broadcom/Kconfig
+@@ -151,8 +151,11 @@ config BNX2X_VXLAN
+ 
+ config BGMAC
+ 	tristate "BCMA bus GBit core support"
+-	depends on BCMA_HOST_SOC && HAS_DMA && (BCM47XX || ARCH_BCM_5301X)
++	depends on BCMA && BCMA_HOST_SOC
++	depends on HAS_DMA
++	depends on BCM47XX || ARCH_BCM_5301X || COMPILE_TEST
+ 	select PHYLIB
++	select FIXED_PHY
+ 	---help---
+ 	  This driver supports GBit MAC and BCM4706 GBit MAC cores on BCMA bus.
+ 	  They can be found on BCM47xx SoCs and provide gigabit ethernet.
diff --git a/target/linux/generic/patches-4.4/075-0004-net-ethernet-bgmac-convert-to-feature-flags.patch b/target/linux/generic/patches-4.4/075-0004-net-ethernet-bgmac-convert-to-feature-flags.patch
new file mode 100644
index 0000000000..82f432d5ff
--- /dev/null
+++ b/target/linux/generic/patches-4.4/075-0004-net-ethernet-bgmac-convert-to-feature-flags.patch
@@ -0,0 +1,384 @@
+From db791eb2970bad193b1dc95a4461b222dd22cb64 Mon Sep 17 00:00:00 2001
+From: Jon Mason <jon.mason@broadcom.com>
+Date: Thu, 7 Jul 2016 19:08:56 -0400
+Subject: [PATCH 4/5] net: ethernet: bgmac: convert to feature flags
+
+The bgmac driver is using the bcma provides device ID and revision, as
+well as the SoC ID and package, to determine which features are
+necessary to enable, reset, etc in the driver.   In anticipation of
+removing the bcma requirement for this driver, these must be changed to
+not reference that struct.  In place of that, each "feature" has been
+given a flag, and the flags are enabled for their respective device and
+SoC.
+
+Signed-off-by: Jon Mason <jon.mason@broadcom.com>
+Acked-by: Arnd Bergmann <arnd@arndb.de>
+Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
+Tested-by: Florian Fainelli <f.fainelli@gmail.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/ethernet/broadcom/bgmac.c | 167 ++++++++++++++++++++++++----------
+ drivers/net/ethernet/broadcom/bgmac.h |  21 ++++-
+ 2 files changed, 140 insertions(+), 48 deletions(-)
+
+--- a/drivers/net/ethernet/broadcom/bgmac.c
++++ b/drivers/net/ethernet/broadcom/bgmac.c
+@@ -109,7 +109,7 @@ static void bgmac_dma_tx_enable(struct b
+ 	u32 ctl;
+ 
+ 	ctl = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_TX_CTL);
+-	if (bgmac->core->id.rev >= 4) {
++	if (bgmac->feature_flags & BGMAC_FEAT_TX_MASK_SETUP) {
+ 		ctl &= ~BGMAC_DMA_TX_BL_MASK;
+ 		ctl |= BGMAC_DMA_TX_BL_128 << BGMAC_DMA_TX_BL_SHIFT;
+ 
+@@ -331,7 +331,7 @@ static void bgmac_dma_rx_enable(struct b
+ 	u32 ctl;
+ 
+ 	ctl = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_RX_CTL);
+-	if (bgmac->core->id.rev >= 4) {
++	if (bgmac->feature_flags & BGMAC_FEAT_RX_MASK_SETUP) {
+ 		ctl &= ~BGMAC_DMA_RX_BL_MASK;
+ 		ctl |= BGMAC_DMA_RX_BL_128 << BGMAC_DMA_RX_BL_SHIFT;
+ 
+@@ -769,14 +769,20 @@ static void bgmac_cmdcfg_maskset(struct
+ {
+ 	u32 cmdcfg = bgmac_read(bgmac, BGMAC_CMDCFG);
+ 	u32 new_val = (cmdcfg & mask) | set;
++	u32 cmdcfg_sr;
+ 
+-	bgmac_set(bgmac, BGMAC_CMDCFG, BGMAC_CMDCFG_SR(bgmac->core->id.rev));
++	if (bgmac->feature_flags & BGMAC_FEAT_CMDCFG_SR_REV4)
++		cmdcfg_sr = BGMAC_CMDCFG_SR_REV4;
++	else
++		cmdcfg_sr = BGMAC_CMDCFG_SR_REV0;
++
++	bgmac_set(bgmac, BGMAC_CMDCFG, cmdcfg_sr);
+ 	udelay(2);
+ 
+ 	if (new_val != cmdcfg || force)
+ 		bgmac_write(bgmac, BGMAC_CMDCFG, new_val);
+ 
+-	bgmac_mask(bgmac, BGMAC_CMDCFG, ~BGMAC_CMDCFG_SR(bgmac->core->id.rev));
++	bgmac_mask(bgmac, BGMAC_CMDCFG, ~cmdcfg_sr);
+ 	udelay(2);
+ }
+ 
+@@ -805,7 +811,7 @@ static void bgmac_chip_stats_update(stru
+ {
+ 	int i;
+ 
+-	if (bgmac->core->id.id != BCMA_CORE_4706_MAC_GBIT) {
++	if (!(bgmac->feature_flags & BGMAC_FEAT_NO_CLR_MIB)) {
+ 		for (i = 0; i < BGMAC_NUM_MIB_TX_REGS; i++)
+ 			bgmac->mib_tx_regs[i] =
+ 				bgmac_read(bgmac,
+@@ -824,7 +830,7 @@ static void bgmac_clear_mib(struct bgmac
+ {
+ 	int i;
+ 
+-	if (bgmac->core->id.id == BCMA_CORE_4706_MAC_GBIT)
++	if (bgmac->feature_flags & BGMAC_FEAT_NO_CLR_MIB)
+ 		return;
+ 
+ 	bgmac_set(bgmac, BGMAC_DEV_CTL, BGMAC_DC_MROR);
+@@ -867,9 +873,8 @@ static void bgmac_mac_speed(struct bgmac
+ static void bgmac_miiconfig(struct bgmac *bgmac)
+ {
+ 	struct bcma_device *core = bgmac->core;
+-	u8 imode;
+ 
+-	if (bgmac_is_bcm4707_family(bgmac)) {
++	if (bgmac->feature_flags & BGMAC_FEAT_FORCE_SPEED_2500) {
+ 		bcma_awrite32(core, BCMA_IOCTL,
+ 			      bcma_aread32(core, BCMA_IOCTL) | 0x40 |
+ 			      BGMAC_BCMA_IOCTL_SW_CLKEN);
+@@ -877,6 +882,8 @@ static void bgmac_miiconfig(struct bgmac
+ 		bgmac->mac_duplex = DUPLEX_FULL;
+ 		bgmac_mac_speed(bgmac);
+ 	} else {
++		u8 imode;
++
+ 		imode = (bgmac_read(bgmac, BGMAC_DEV_STATUS) &
+ 			BGMAC_DS_MM_MASK) >> BGMAC_DS_MM_SHIFT;
+ 		if (imode == 0 || imode == 1) {
+@@ -891,9 +898,7 @@ static void bgmac_miiconfig(struct bgmac
+ static void bgmac_chip_reset(struct bgmac *bgmac)
+ {
+ 	struct bcma_device *core = bgmac->core;
+-	struct bcma_bus *bus = core->bus;
+-	struct bcma_chipinfo *ci = &bus->chipinfo;
+-	u32 flags;
++	u32 cmdcfg_sr;
+ 	u32 iost;
+ 	int i;
+ 
+@@ -916,15 +921,12 @@ static void bgmac_chip_reset(struct bgma
+ 	}
+ 
+ 	iost = bcma_aread32(core, BCMA_IOST);
+-	if ((ci->id == BCMA_CHIP_ID_BCM5357 && ci->pkg == BCMA_PKG_ID_BCM47186) ||
+-	    (ci->id == BCMA_CHIP_ID_BCM4749 && ci->pkg == 10) ||
+-	    (ci->id == BCMA_CHIP_ID_BCM53572 && ci->pkg == BCMA_PKG_ID_BCM47188))
++	if (bgmac->feature_flags & BGMAC_FEAT_IOST_ATTACHED)
+ 		iost &= ~BGMAC_BCMA_IOST_ATTACHED;
+ 
+ 	/* 3GMAC: for BCM4707 & BCM47094, only do core reset at bgmac_probe() */
+-	if (ci->id != BCMA_CHIP_ID_BCM4707 &&
+-	    ci->id != BCMA_CHIP_ID_BCM47094) {
+-		flags = 0;
++	if (!(bgmac->feature_flags & BGMAC_FEAT_NO_RESET)) {
++		u32 flags = 0;
+ 		if (iost & BGMAC_BCMA_IOST_ATTACHED) {
+ 			flags = BGMAC_BCMA_IOCTL_SW_CLKEN;
+ 			if (!bgmac->has_robosw)
+@@ -934,7 +936,7 @@ static void bgmac_chip_reset(struct bgma
+ 	}
+ 
+ 	/* Request Misc PLL for corerev > 2 */
+-	if (core->id.rev > 2 && !bgmac_is_bcm4707_family(bgmac)) {
++	if (bgmac->feature_flags & BGMAC_FEAT_MISC_PLL_REQ) {
+ 		bgmac_set(bgmac, BCMA_CLKCTLST,
+ 			  BGMAC_BCMA_CLKCTLST_MISC_PLL_REQ);
+ 		bgmac_wait_value(bgmac->core, BCMA_CLKCTLST,
+@@ -943,9 +945,7 @@ static void bgmac_chip_reset(struct bgma
+ 				 1000);
+ 	}
+ 
+-	if (ci->id == BCMA_CHIP_ID_BCM5357 ||
+-	    ci->id == BCMA_CHIP_ID_BCM4749 ||
+-	    ci->id == BCMA_CHIP_ID_BCM53572) {
++	if (bgmac->feature_flags & BGMAC_FEAT_SW_TYPE_PHY) {
+ 		struct bcma_drv_cc *cc = &bgmac->core->bus->drv_cc;
+ 		u8 et_swtype = 0;
+ 		u8 sw_type = BGMAC_CHIPCTL_1_SW_TYPE_EPHY |
+@@ -959,11 +959,9 @@ static void bgmac_chip_reset(struct bgma
+ 			et_swtype &= 0x0f;
+ 			et_swtype <<= 4;
+ 			sw_type = et_swtype;
+-		} else if (ci->id == BCMA_CHIP_ID_BCM5357 && ci->pkg == BCMA_PKG_ID_BCM5358) {
++		} else if (bgmac->feature_flags & BGMAC_FEAT_SW_TYPE_EPHYRMII) {
+ 			sw_type = BGMAC_CHIPCTL_1_SW_TYPE_EPHYRMII;
+-		} else if ((ci->id == BCMA_CHIP_ID_BCM5357 && ci->pkg == BCMA_PKG_ID_BCM47186) ||
+-			   (ci->id == BCMA_CHIP_ID_BCM4749 && ci->pkg == 10) ||
+-			   (ci->id == BCMA_CHIP_ID_BCM53572 && ci->pkg == BCMA_PKG_ID_BCM47188)) {
++		} else if (bgmac->feature_flags & BGMAC_FEAT_SW_TYPE_RGMII) {
+ 			sw_type = BGMAC_CHIPCTL_1_IF_TYPE_RGMII |
+ 				  BGMAC_CHIPCTL_1_SW_TYPE_RGMII;
+ 		}
+@@ -983,6 +981,11 @@ static void bgmac_chip_reset(struct bgma
+ 	 * BGMAC_CMDCFG is read _after_ putting chip in a reset. So it has to
+ 	 * be keps until taking MAC out of the reset.
+ 	 */
++	if (bgmac->feature_flags & BGMAC_FEAT_CMDCFG_SR_REV4)
++		cmdcfg_sr = BGMAC_CMDCFG_SR_REV4;
++	else
++		cmdcfg_sr = BGMAC_CMDCFG_SR_REV0;
++
+ 	bgmac_cmdcfg_maskset(bgmac,
+ 			     ~(BGMAC_CMDCFG_TE |
+ 			       BGMAC_CMDCFG_RE |
+@@ -1000,13 +1003,13 @@ static void bgmac_chip_reset(struct bgma
+ 			     BGMAC_CMDCFG_PROM |
+ 			     BGMAC_CMDCFG_NLC |
+ 			     BGMAC_CMDCFG_CFE |
+-			     BGMAC_CMDCFG_SR(core->id.rev),
++			     cmdcfg_sr,
+ 			     false);
+ 	bgmac->mac_speed = SPEED_UNKNOWN;
+ 	bgmac->mac_duplex = DUPLEX_UNKNOWN;
+ 
+ 	bgmac_clear_mib(bgmac);
+-	if (core->id.id == BCMA_CORE_4706_MAC_GBIT)
++	if (bgmac->feature_flags & BGMAC_FEAT_CMN_PHY_CTL)
+ 		bcma_maskset32(bgmac->cmn, BCMA_GMAC_CMN_PHY_CTL, ~0,
+ 			       BCMA_GMAC_CMN_PC_MTE);
+ 	else
+@@ -1032,46 +1035,48 @@ static void bgmac_chip_intrs_off(struct
+ /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/gmac_enable */
+ static void bgmac_enable(struct bgmac *bgmac)
+ {
+-	struct bcma_chipinfo *ci = &bgmac->core->bus->chipinfo;
++	u32 cmdcfg_sr;
+ 	u32 cmdcfg;
+ 	u32 mode;
+-	u32 rxq_ctl;
+-	u32 fl_ctl;
+-	u16 bp_clk;
+-	u8 mdp;
++
++	if (bgmac->feature_flags & BGMAC_FEAT_CMDCFG_SR_REV4)
++		cmdcfg_sr = BGMAC_CMDCFG_SR_REV4;
++	else
++		cmdcfg_sr = BGMAC_CMDCFG_SR_REV0;
+ 
+ 	cmdcfg = bgmac_read(bgmac, BGMAC_CMDCFG);
+ 	bgmac_cmdcfg_maskset(bgmac, ~(BGMAC_CMDCFG_TE | BGMAC_CMDCFG_RE),
+-			     BGMAC_CMDCFG_SR(bgmac->core->id.rev), true);
++			     cmdcfg_sr, true);
+ 	udelay(2);
+ 	cmdcfg |= BGMAC_CMDCFG_TE | BGMAC_CMDCFG_RE;
+ 	bgmac_write(bgmac, BGMAC_CMDCFG, cmdcfg);
+ 
+ 	mode = (bgmac_read(bgmac, BGMAC_DEV_STATUS) & BGMAC_DS_MM_MASK) >>
+ 		BGMAC_DS_MM_SHIFT;
+-	if (ci->id != BCMA_CHIP_ID_BCM47162 || mode != 0)
++	if (bgmac->feature_flags & BGMAC_FEAT_CLKCTLST || mode != 0)
+ 		bgmac_set(bgmac, BCMA_CLKCTLST, BCMA_CLKCTLST_FORCEHT);
+-	if (ci->id == BCMA_CHIP_ID_BCM47162 && mode == 2)
++	if (bgmac->feature_flags & BGMAC_FEAT_CLKCTLST && mode == 2)
+ 		bcma_chipco_chipctl_maskset(&bgmac->core->bus->drv_cc, 1, ~0,
+ 					    BGMAC_CHIPCTL_1_RXC_DLL_BYPASS);
+ 
+-	switch (ci->id) {
+-	case BCMA_CHIP_ID_BCM5357:
+-	case BCMA_CHIP_ID_BCM4749:
+-	case BCMA_CHIP_ID_BCM53572:
+-	case BCMA_CHIP_ID_BCM4716:
+-	case BCMA_CHIP_ID_BCM47162:
+-		fl_ctl = 0x03cb04cb;
+-		if (ci->id == BCMA_CHIP_ID_BCM5357 ||
+-		    ci->id == BCMA_CHIP_ID_BCM4749 ||
+-		    ci->id == BCMA_CHIP_ID_BCM53572)
++	if (bgmac->feature_flags & (BGMAC_FEAT_FLW_CTRL1 |
++				    BGMAC_FEAT_FLW_CTRL2)) {
++		u32 fl_ctl;
++
++		if (bgmac->feature_flags & BGMAC_FEAT_FLW_CTRL1)
+ 			fl_ctl = 0x2300e1;
++		else
++			fl_ctl = 0x03cb04cb;
++
+ 		bgmac_write(bgmac, BGMAC_FLOW_CTL_THRESH, fl_ctl);
+ 		bgmac_write(bgmac, BGMAC_PAUSE_CTL, 0x27fff);
+-		break;
+ 	}
+ 
+-	if (!bgmac_is_bcm4707_family(bgmac)) {
++	if (bgmac->feature_flags & BGMAC_FEAT_SET_RXQ_CLK) {
++		u32 rxq_ctl;
++		u16 bp_clk;
++		u8 mdp;
++
+ 		rxq_ctl = bgmac_read(bgmac, BGMAC_RXQ_CTL);
+ 		rxq_ctl &= ~BGMAC_RXQ_CTL_MDP_MASK;
+ 		bp_clk = bcma_pmu_get_bus_clock(&bgmac->core->bus->drv_cc) /
+@@ -1603,6 +1608,74 @@ static int bgmac_probe(struct bcma_devic
+ 	if (core->bus->sprom.boardflags_lo & BGMAC_BFL_ENETADM)
+ 		dev_warn(bgmac->dev, "Support for ADMtek ethernet switch not implemented\n");
+ 
++	/* Feature Flags */
++	switch (core->bus->chipinfo.id) {
++	case BCMA_CHIP_ID_BCM5357:
++		bgmac->feature_flags |= BGMAC_FEAT_SET_RXQ_CLK;
++		bgmac->feature_flags |= BGMAC_FEAT_CLKCTLST;
++		bgmac->feature_flags |= BGMAC_FEAT_FLW_CTRL1;
++		bgmac->feature_flags |= BGMAC_FEAT_SW_TYPE_PHY;
++		if (core->bus->chipinfo.pkg == BCMA_PKG_ID_BCM47186) {
++			bgmac->feature_flags |= BGMAC_FEAT_IOST_ATTACHED;
++			bgmac->feature_flags |= BGMAC_FEAT_SW_TYPE_RGMII;
++		}
++		if (core->bus->chipinfo.pkg == BCMA_PKG_ID_BCM5358)
++			bgmac->feature_flags |= BGMAC_FEAT_SW_TYPE_EPHYRMII;
++		break;
++	case BCMA_CHIP_ID_BCM53572:
++		bgmac->feature_flags |= BGMAC_FEAT_SET_RXQ_CLK;
++		bgmac->feature_flags |= BGMAC_FEAT_CLKCTLST;
++		bgmac->feature_flags |= BGMAC_FEAT_FLW_CTRL1;
++		bgmac->feature_flags |= BGMAC_FEAT_SW_TYPE_PHY;
++		if (core->bus->chipinfo.pkg == BCMA_PKG_ID_BCM47188) {
++			bgmac->feature_flags |= BGMAC_FEAT_SW_TYPE_RGMII;
++			bgmac->feature_flags |= BGMAC_FEAT_IOST_ATTACHED;
++		}
++		break;
++	case BCMA_CHIP_ID_BCM4749:
++		bgmac->feature_flags |= BGMAC_FEAT_SET_RXQ_CLK;
++		bgmac->feature_flags |= BGMAC_FEAT_CLKCTLST;
++		bgmac->feature_flags |= BGMAC_FEAT_FLW_CTRL1;
++		bgmac->feature_flags |= BGMAC_FEAT_SW_TYPE_PHY;
++		if (core->bus->chipinfo.pkg == 10) {
++			bgmac->feature_flags |= BGMAC_FEAT_SW_TYPE_RGMII;
++			bgmac->feature_flags |= BGMAC_FEAT_IOST_ATTACHED;
++		}
++		break;
++	case BCMA_CHIP_ID_BCM4716:
++		bgmac->feature_flags |= BGMAC_FEAT_CLKCTLST;
++		/* fallthrough */
++	case BCMA_CHIP_ID_BCM47162:
++		bgmac->feature_flags |= BGMAC_FEAT_FLW_CTRL2;
++		bgmac->feature_flags |= BGMAC_FEAT_SET_RXQ_CLK;
++		break;
++	/* bcm4707_family */
++	case BCMA_CHIP_ID_BCM4707:
++	case BCMA_CHIP_ID_BCM47094:
++	case BCMA_CHIP_ID_BCM53018:
++		bgmac->feature_flags |= BGMAC_FEAT_CLKCTLST;
++		bgmac->feature_flags |= BGMAC_FEAT_NO_RESET;
++		bgmac->feature_flags |= BGMAC_FEAT_FORCE_SPEED_2500;
++		break;
++	default:
++		bgmac->feature_flags |= BGMAC_FEAT_CLKCTLST;
++		bgmac->feature_flags |= BGMAC_FEAT_SET_RXQ_CLK;
++	}
++
++	if (!bgmac_is_bcm4707_family(bgmac) && core->id.rev > 2)
++		bgmac->feature_flags |= BGMAC_FEAT_MISC_PLL_REQ;
++
++	if (core->id.id == BCMA_CORE_4706_MAC_GBIT) {
++		bgmac->feature_flags |= BGMAC_FEAT_CMN_PHY_CTL;
++		bgmac->feature_flags |= BGMAC_FEAT_NO_CLR_MIB;
++	}
++
++	if (core->id.rev >= 4) {
++		bgmac->feature_flags |= BGMAC_FEAT_CMDCFG_SR_REV4;
++		bgmac->feature_flags |= BGMAC_FEAT_TX_MASK_SETUP;
++		bgmac->feature_flags |= BGMAC_FEAT_RX_MASK_SETUP;
++	}
++
+ 	netif_napi_add(net_dev, &bgmac->napi, bgmac_poll, BGMAC_WEIGHT);
+ 
+ 	if (!bgmac_is_bcm4707_family(bgmac)) {
+--- a/drivers/net/ethernet/broadcom/bgmac.h
++++ b/drivers/net/ethernet/broadcom/bgmac.h
+@@ -190,7 +190,6 @@
+ #define  BGMAC_CMDCFG_HD_SHIFT			10
+ #define  BGMAC_CMDCFG_SR_REV0			0x00000800	/* Set to reset mode, for core rev 0-3 */
+ #define  BGMAC_CMDCFG_SR_REV4			0x00002000	/* Set to reset mode, for core rev >= 4 */
+-#define  BGMAC_CMDCFG_SR(rev)  ((rev >= 4) ? BGMAC_CMDCFG_SR_REV4 : BGMAC_CMDCFG_SR_REV0)
+ #define  BGMAC_CMDCFG_ML			0x00008000	/* Set to activate mac loopback mode */
+ #define  BGMAC_CMDCFG_AE			0x00400000
+ #define  BGMAC_CMDCFG_CFE			0x00800000
+@@ -376,6 +375,24 @@
+ 
+ #define ETHER_MAX_LEN   1518
+ 
++/* Feature Flags */
++#define BGMAC_FEAT_TX_MASK_SETUP	BIT(0)
++#define BGMAC_FEAT_RX_MASK_SETUP	BIT(1)
++#define BGMAC_FEAT_IOST_ATTACHED	BIT(2)
++#define BGMAC_FEAT_NO_RESET		BIT(3)
++#define BGMAC_FEAT_MISC_PLL_REQ		BIT(4)
++#define BGMAC_FEAT_SW_TYPE_PHY		BIT(5)
++#define BGMAC_FEAT_SW_TYPE_EPHYRMII	BIT(6)
++#define BGMAC_FEAT_SW_TYPE_RGMII	BIT(7)
++#define BGMAC_FEAT_CMN_PHY_CTL		BIT(8)
++#define BGMAC_FEAT_FLW_CTRL1		BIT(9)
++#define BGMAC_FEAT_FLW_CTRL2		BIT(10)
++#define BGMAC_FEAT_SET_RXQ_CLK		BIT(11)
++#define BGMAC_FEAT_CLKCTLST		BIT(12)
++#define BGMAC_FEAT_NO_CLR_MIB		BIT(13)
++#define BGMAC_FEAT_FORCE_SPEED_2500	BIT(14)
++#define BGMAC_FEAT_CMDCFG_SR_REV4	BIT(15)
++
+ struct bgmac_slot_info {
+ 	union {
+ 		struct sk_buff *skb;
+@@ -430,6 +447,8 @@ struct bgmac {
+ 
+ 	struct device *dev;
+ 	struct device *dma_dev;
++	u32 feature_flags;
++
+ 	struct net_device *net_dev;
+ 	struct napi_struct napi;
+ 	struct mii_bus *mii_bus;
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 29e7892662..13d3305dec 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
@@ -12,7 +12,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
  #include <linux/bcm47xx_nvram.h>
  
  static const struct bcma_device_id bgmac_bcma_tbl[] = {
-@@ -1403,6 +1404,17 @@ static const struct ethtool_ops bgmac_et
+@@ -1408,6 +1409,17 @@ static const struct ethtool_ops bgmac_et
  	.get_drvinfo		= bgmac_get_drvinfo,
  };
  
@@ -30,11 +30,19 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
  /**************************************************
   * MII
   **************************************************/
-@@ -1630,6 +1642,14 @@ static int bgmac_probe(struct bcma_devic
+@@ -1656,6 +1668,7 @@ 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;
++		bgmac->feature_flags |= BGMAC_FEAT_SRAB;
+ 		break;
+ 	default:
+ 		bgmac->feature_flags |= BGMAC_FEAT_CLKCTLST;
+@@ -1703,6 +1716,14 @@ static int bgmac_probe(struct bcma_devic
  	net_dev->hw_features = net_dev->features;
  	net_dev->vlan_features = net_dev->features;
  
-+	if (bgmac_is_bcm4707_family(bgmac) && !bgmac_b53_pdata.regs) {
++	if ((bgmac->feature_flags & BGMAC_FEAT_SRAB) && !bgmac_b53_pdata.regs) {
 +		bgmac_b53_pdata.regs = ioremap_nocache(0x18007000, 0x1000);
 +
 +		err = platform_device_register(&bgmac_b53_dev);
@@ -45,7 +53,7 @@ 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");
-@@ -1657,6 +1677,10 @@ static void bgmac_remove(struct bcma_dev
+@@ -1730,6 +1751,10 @@ static void bgmac_remove(struct bcma_dev
  {
  	struct bgmac *bgmac = bcma_get_drvdata(core);
  
@@ -58,7 +66,15 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
  	bcma_mdio_mii_unregister(bgmac->mii_bus);
 --- a/drivers/net/ethernet/broadcom/bgmac.h
 +++ b/drivers/net/ethernet/broadcom/bgmac.h
-@@ -454,6 +454,9 @@ struct bgmac {
+@@ -392,6 +392,7 @@
+ #define BGMAC_FEAT_NO_CLR_MIB		BIT(13)
+ #define BGMAC_FEAT_FORCE_SPEED_2500	BIT(14)
+ #define BGMAC_FEAT_CMDCFG_SR_REV4	BIT(15)
++#define BGMAC_FEAT_SRAB			BIT(16)
+ 
+ struct bgmac_slot_info {
+ 	union {
+@@ -473,6 +474,9 @@ struct bgmac {
  	bool has_robosw;
  
  	bool loopback;