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Date: Thu, 11 Dec 2014 18:12:42 -0800
From: Florian Fainelli <f.fainelli@...il.com>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, Florian Fainelli <f.fainelli@...il.com>
Subject: [PATCH net] net: dsa: bcm_sf2: force link for all fixed PHY devices
For ports of the switch that we define as "fixed PHYs" such as MoCA, we
would have our Port 7 special handling that would allow us to assert the
link status indication.
For other ports, such as e.g: RGMII_1 connected to a cable modem, we
would rely on whatever the bootloader has left configured, which is a
bad assumption to make, we really need to force the link status
indication here.
Fixes: 246d7f773c13 ("net: dsa: add Broadcom SF2 switch driver")
Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
drivers/net/dsa/bcm_sf2.c | 23 +++++++++++++----------
1 file changed, 13 insertions(+), 10 deletions(-)
diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c
index 4f4c2a7888e5..feb29c4526f7 100644
--- a/drivers/net/dsa/bcm_sf2.c
+++ b/drivers/net/dsa/bcm_sf2.c
@@ -684,10 +684,9 @@ static void bcm_sf2_sw_fixed_link_update(struct dsa_switch *ds, int port,
struct fixed_phy_status *status)
{
struct bcm_sf2_priv *priv = ds_to_priv(ds);
- u32 link, duplex, pause, speed;
+ u32 duplex, pause, speed;
u32 reg;
- link = core_readl(priv, CORE_LNKSTS);
duplex = core_readl(priv, CORE_DUPSTS);
pause = core_readl(priv, CORE_PAUSESTS);
speed = core_readl(priv, CORE_SPDSTS);
@@ -701,22 +700,26 @@ static void bcm_sf2_sw_fixed_link_update(struct dsa_switch *ds, int port,
* which means that we need to force the link at the port override
* level to get the data to flow. We do use what the interrupt handler
* did determine before.
+ *
+ * For the other ports, we just force the link status, since this is
+ * a fixed PHY device.
*/
if (port == 7) {
status->link = priv->port_sts[port].link;
- reg = core_readl(priv, CORE_STS_OVERRIDE_GMIIP_PORT(7));
- reg |= SW_OVERRIDE;
- if (status->link)
- reg |= LINK_STS;
- else
- reg &= ~LINK_STS;
- core_writel(priv, reg, CORE_STS_OVERRIDE_GMIIP_PORT(7));
status->duplex = 1;
} else {
- status->link = !!(link & (1 << port));
+ status->link = 1;
status->duplex = !!(duplex & (1 << port));
}
+ reg = core_readl(priv, CORE_STS_OVERRIDE_GMIIP_PORT(port));
+ reg |= SW_OVERRIDE;
+ if (status->link)
+ reg |= LINK_STS;
+ else
+ reg &= ~LINK_STS;
+ core_writel(priv, reg, CORE_STS_OVERRIDE_GMIIP_PORT(port));
+
switch (speed) {
case SPDSTS_10:
status->speed = SPEED_10;
--
2.1.0
--
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