kernel: update kernel 4.9 to version 4.9.91
[openwrt/openwrt.git] / target / linux / generic / backport-4.9 / 071-v4.15-0001-net-bgmac-enable-master-mode-for-BCM54210E-and-B5021.patch
1 From 12acd136913ccdf394eeb2bc8686ff5505368119 Mon Sep 17 00:00:00 2001
2 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
3 Date: Thu, 12 Oct 2017 10:21:26 +0200
4 Subject: [PATCH] net: bgmac: enable master mode for BCM54210E and B50212E PHYs
5 MIME-Version: 1.0
6 Content-Type: text/plain; charset=UTF-8
7 Content-Transfer-Encoding: 8bit
8
9 There are 4 very similar PHYs:
10 0x600d84a1: BCM54210E (rev B0)
11 0x600d84a2: BCM54210E (rev B1)
12 0x600d84a5: B50212E (rev B0)
13 0x600d84a6: B50212E (rev B1)
14 that need setting master mode manually. It's because they run in slave
15 mode by default with Automatic Slave/Master configuration disabled which
16 can lead to unreliable connection with massive ping loss.
17
18 So far it was reported for a board with BCM47189 SoC and B50212E B1 PHY
19 connected to the bgmac supported ethernet device. Telling PHY driver to
20 setup PHY properly solves this issue.
21
22 Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
23 Signed-off-by: David S. Miller <davem@davemloft.net>
24 ---
25 drivers/net/ethernet/broadcom/bgmac-bcma.c | 8 +++++++-
26 1 file changed, 7 insertions(+), 1 deletion(-)
27
28 --- a/drivers/net/ethernet/broadcom/bgmac-bcma.c
29 +++ b/drivers/net/ethernet/broadcom/bgmac-bcma.c
30 @@ -166,13 +166,19 @@ static int bgmac_probe(struct bcma_devic
31
32 if (!bgmac_is_bcm4707_family(core) &&
33 !(ci->id == BCMA_CHIP_ID_BCM53573 && core->core_unit == 1)) {
34 + struct phy_device *phydev;
35 +
36 mii_bus = bcma_mdio_mii_register(bgmac);
37 if (IS_ERR(mii_bus)) {
38 err = PTR_ERR(mii_bus);
39 goto err;
40 }
41 -
42 bgmac->mii_bus = mii_bus;
43 +
44 + phydev = mdiobus_get_phy(bgmac->mii_bus, bgmac->phyaddr);
45 + if (ci->id == BCMA_CHIP_ID_BCM53573 && phydev &&
46 + (phydev->drv->phy_id & phydev->drv->phy_id_mask) == PHY_ID_BCM54210E)
47 + phydev->dev_flags |= PHY_BRCM_EN_MASTER_MODE;
48 }
49
50 if (core->bus->hosttype == BCMA_HOSTTYPE_PCI) {