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kernel: add fix for bgmac with B50212E B1 PHY

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This PHY requires some extra programming to work reliably with all
devices. Backport upstream fix for it.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
This commit is contained in:
Rafał Miłecki 2017-10-13 14:06:18 +02:00
parent c1023c8075
commit 8ad1b09c6d
5 changed files with 98 additions and 3 deletions
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50
target/linux/generic/patches-4.4/073-v4.15-0001-net-bgmac-enable-master-mode-for-BCM54210E-and-B5021.patch Normal file
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@ -0,0 +1,50 @@
From 12acd136913ccdf394eeb2bc8686ff5505368119 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Thu, 12 Oct 2017 10:21:26 +0200
Subject: [PATCH] net: bgmac: enable master mode for BCM54210E and B50212E PHYs
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
There are 4 very similar PHYs:
0x600d84a1: BCM54210E (rev B0)
0x600d84a2: BCM54210E (rev B1)
0x600d84a5: B50212E (rev B0)
0x600d84a6: B50212E (rev B1)
that need setting master mode manually. It's because they run in slave
mode by default with Automatic Slave/Master configuration disabled which
can lead to unreliable connection with massive ping loss.
So far it was reported for a board with BCM47189 SoC and B50212E B1 PHY
connected to the bgmac supported ethernet device. Telling PHY driver to
setup PHY properly solves this issue.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ethernet/broadcom/bgmac-bcma.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
--- a/drivers/net/ethernet/broadcom/bgmac-bcma.c
+++ b/drivers/net/ethernet/broadcom/bgmac-bcma.c
@@ -159,13 +159,19 @@ static int bgmac_probe(struct bcma_devic
if (!bgmac_is_bcm4707_family(core) &&
!(ci->id == BCMA_CHIP_ID_BCM53573 && core->core_unit == 1)) {
+ struct phy_device *phydev;
+
mii_bus = bcma_mdio_mii_register(bgmac);
if (IS_ERR(mii_bus)) {
err = PTR_ERR(mii_bus);
goto err;
}
-
bgmac->mii_bus = mii_bus;
+
+ phydev = bgmac->mii_bus->phy_map[bgmac->phyaddr];
+ if (ci->id == BCMA_CHIP_ID_BCM53573 && phydev &&
+ (phydev->drv->phy_id & phydev->drv->phy_id_mask) == PHY_ID_BCM54210E)
+ phydev->dev_flags |= PHY_BRCM_EN_MASTER_MODE;
}
if (core->bus->hosttype == BCMA_HOSTTYPE_PCI) {

3
target/linux/generic/patches-4.4/078-0003-net-phy-cherry-pick-Broadcom-drivers-updates-from-v4.patch
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@ -1,6 +1,5 @@
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Subject: [PATCH 1/2] net: phy: cherry-pick Broadcom drivers updates from
v4.10-rc1
Subject: [PATCH] net: phy: cherry-pick Broadcom drivers updates from v4.10
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
---

9
target/linux/generic/patches-4.4/078-0004-net-phy-pick-Broadcom-drivers-updates-from-net-next-.patch → target/linux/generic/patches-4.4/078-0004-net-phy-cherry-pick-Broadcom-drivers-updates-from-v4.patch
View File

@ -1,3 +1,12 @@
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Subject: [PATCH] net: phy: cherry-pick Broadcom drivers updates from v4.11
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
---
--- a/drivers/net/phy/broadcom.c
+++ b/drivers/net/phy/broadcom.c
@@ -30,6 +30,50 @@ MODULE_DESCRIPTION("Broadcom PHY driver"

37
target/linux/generic/patches-4.4/078-0006-net-phy-cherry-pick-Broadcom-drivers-updates-from-v4.patch Normal file
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@ -0,0 +1,37 @@
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Subject: [PATCH] net: phy: cherry-pick Broadcom drivers updates from v4.15
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This includes following upstream commits:
2355a6546a05 net: phy: broadcom: support new device flag for setting master mode
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
---
--- a/drivers/net/phy/broadcom.c
+++ b/drivers/net/phy/broadcom.c
@@ -43,6 +43,12 @@ static int bcm54210e_config_init(struct
val &= ~BCM54810_SHD_CLK_CTL_GTXCLK_EN;
bcm_phy_write_shadow(phydev, BCM54810_SHD_CLK_CTL, val);
+ if (phydev->dev_flags & PHY_BRCM_EN_MASTER_MODE) {
+ val = phy_read(phydev, MII_CTRL1000);
+ val |= CTL1000_AS_MASTER | CTL1000_ENABLE_MASTER;
+ phy_write(phydev, MII_CTRL1000, val);
+ }
+
return 0;
}
--- a/include/linux/brcmphy.h
+++ b/include/linux/brcmphy.h
@@ -55,6 +55,7 @@
#define PHY_BRCM_EXT_IBND_TX_ENABLE 0x00002000
#define PHY_BRCM_CLEAR_RGMII_MODE 0x00004000
#define PHY_BRCM_DIS_TXCRXC_NOENRGY 0x00008000
+#define PHY_BRCM_EN_MASTER_MODE 0x00010000
/* Broadcom BCM7xxx specific workarounds */
#define PHY_BRCM_7XXX_REV(x) (((x) >> 8) & 0xff)

2
target/linux/generic/patches-4.4/773-bgmac-add-srab-switch.patch
View File

@ -78,7 +78,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
struct bgmac *bgmac_alloc(struct device *dev);
--- a/drivers/net/ethernet/broadcom/bgmac-bcma.c
+++ b/drivers/net/ethernet/broadcom/bgmac-bcma.c
@@ -230,6 +230,7 @@ static int bgmac_probe(struct bcma_devic
@@ -236,6 +236,7 @@ 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;