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