From 80722233476224eb695b186c0add6e9b5cf43d11 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Thu, 18 Aug 2016 11:05:12 +0200 Subject: [PATCH] kernel: b53: force BCM531x5 port 5 link state if enabled MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Some devices (e.g. Tenda AC9 based on BCM47189B0) have BCM53125 with port 5 connected to the second Ethernet interface on the SoC. In such case there is no PHY and we need to force link manually. This assumes port 5 can be marked as enabled for such devices. It's not implemented yet unfortunately. Signed-off-by: Rafał Miłecki --- .../generic/files/drivers/net/phy/b53/b53_common.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/target/linux/generic/files/drivers/net/phy/b53/b53_common.c b/target/linux/generic/files/drivers/net/phy/b53/b53_common.c index d96d8b8b6d..b884010d28 100644 --- a/target/linux/generic/files/drivers/net/phy/b53/b53_common.c +++ b/target/linux/generic/files/drivers/net/phy/b53/b53_common.c @@ -534,6 +534,19 @@ static int b53_switch_reset(struct b53_device *dev) b53_write8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL, mii_port_override | PORT_OVERRIDE_EN | PORT_OVERRIDE_LINK); + + /* BCM47189 has another interface connected to the port 5 */ + if (dev->enabled_ports & BIT(5)) { + u8 po_reg = B53_GMII_PORT_OVERRIDE_CTRL(5); + u8 gmii_po; + + b53_read8(dev, B53_CTRL_PAGE, po_reg, &gmii_po); + gmii_po |= GMII_PO_LINK | + GMII_PO_RX_FLOW | + GMII_PO_TX_FLOW | + GMII_PO_EN; + b53_write8(dev, B53_CTRL_PAGE, po_reg, gmii_po); + } } else if (is5301x(dev)) { if (cpu_port == 8) { u8 mii_port_override; -- 2.25.1