ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/target/linux/generic/backport-5.4/710-v5.16-0001-net-bgmac-improve-handling-PHY.patch b/target/linux/generic/backport-5.4/710-v5.16-0001-net-bgmac-improve-handling-PHY.patch
new file mode 100644
index 0000000..6788a2e
--- /dev/null
+++ b/target/linux/generic/backport-5.4/710-v5.16-0001-net-bgmac-improve-handling-PHY.patch
@@ -0,0 +1,84 @@
+From b5375509184dc23d2b7fa0c5ed8763899ccc9674 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Sat, 2 Oct 2021 19:58:11 +0200
+Subject: [PATCH] net: bgmac: improve handling PHY
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+1. Use info from DT if available
+
+It allows describing for example a fixed link. It's more accurate than
+just guessing there may be one (depending on a chipset).
+
+2. Verify PHY ID before trying to connect PHY
+
+PHY addr 0x1e (30) is special in Broadcom routers and means a switch
+connected as MDIO devices instead of a real PHY. Don't try connecting to
+it.
+
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/ethernet/broadcom/bgmac-bcma.c | 33 ++++++++++++++--------
+ 1 file changed, 21 insertions(+), 12 deletions(-)
+
+--- a/drivers/net/ethernet/broadcom/bgmac-bcma.c
++++ b/drivers/net/ethernet/broadcom/bgmac-bcma.c
+@@ -11,6 +11,7 @@
+ #include <linux/bcma/bcma.h>
+ #include <linux/brcmphy.h>
+ #include <linux/etherdevice.h>
++#include <linux/of_mdio.h>
+ #include <linux/of_net.h>
+ #include "bgmac.h"
+
+@@ -86,17 +87,28 @@ static int bcma_phy_connect(struct bgmac
+ struct phy_device *phy_dev;
+ char bus_id[MII_BUS_ID_SIZE + 3];
+
++ /* DT info should be the most accurate */
++ phy_dev = of_phy_get_and_connect(bgmac->net_dev, bgmac->dev->of_node,
++ bgmac_adjust_link);
++ if (phy_dev)
++ return 0;
++
+ /* Connect to the PHY */
+- snprintf(bus_id, sizeof(bus_id), PHY_ID_FMT, bgmac->mii_bus->id,
+- bgmac->phyaddr);
+- phy_dev = phy_connect(bgmac->net_dev, bus_id, bgmac_adjust_link,
+- PHY_INTERFACE_MODE_MII);
+- if (IS_ERR(phy_dev)) {
+- dev_err(bgmac->dev, "PHY connection failed\n");
+- return PTR_ERR(phy_dev);
++ if (bgmac->mii_bus && bgmac->phyaddr != BGMAC_PHY_NOREGS) {
++ snprintf(bus_id, sizeof(bus_id), PHY_ID_FMT, bgmac->mii_bus->id,
++ bgmac->phyaddr);
++ phy_dev = phy_connect(bgmac->net_dev, bus_id, bgmac_adjust_link,
++ PHY_INTERFACE_MODE_MII);
++ if (IS_ERR(phy_dev)) {
++ dev_err(bgmac->dev, "PHY connection failed\n");
++ return PTR_ERR(phy_dev);
++ }
++
++ return 0;
+ }
+
+- return 0;
++ /* Assume a fixed link to the switch port */
++ return bgmac_phy_connect_direct(bgmac);
+ }
+
+ static const struct bcma_device_id bgmac_bcma_tbl[] = {
+@@ -297,10 +309,7 @@ static int bgmac_probe(struct bcma_devic
+ bgmac->cco_ctl_maskset = bcma_bgmac_cco_ctl_maskset;
+ bgmac->get_bus_clock = bcma_bgmac_get_bus_clock;
+ bgmac->cmn_maskset32 = bcma_bgmac_cmn_maskset32;
+- if (bgmac->mii_bus)
+- bgmac->phy_connect = bcma_phy_connect;
+- else
+- bgmac->phy_connect = bgmac_phy_connect_direct;
++ bgmac->phy_connect = bcma_phy_connect;
+
+ err = bgmac_enet_probe(bgmac);
+ if (err)