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net: dsa: bcm_sf2: Do not override speed settings 

The SF2 driver currently overrides speed settings for its port
configured using a fixed PHY, this is both unnecessary and incorrect,
because we keep feedback to the hardware parameters that we read from
the PHY device, which in the case of a fixed PHY cannot possibly change
speed.

This is a required change to allow the fixed PHY code to allow
registering a PHY with a link configured as DOWN by default and avoid
some sort of circular dependency where we require the link_update
callback to run to program the hardware, and we then utilize the fixed
PHY parameters to program the hardware with the same settings.

Fixes: 246d7f773c ("net: dsa: add Broadcom SF2 switch driver")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2015-07-20 17:49:55 -07:00 committed by David S. Miller
parent e181a54304
commit d2eac98f7d
1 changed files with 1 additions and 17 deletions
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18
drivers/net/dsa/bcm_sf2.c
View File

@ -890,15 +890,11 @@ static void bcm_sf2_sw_fixed_link_update(struct dsa_switch *ds, int port,
struct fixed_phy_status *status) struct fixed_phy_status *status)
{ {
struct bcm_sf2_priv *priv = ds_to_priv(ds); struct bcm_sf2_priv *priv = ds_to_priv(ds);
u32 duplex, pause, speed; u32 duplex, pause;
u32 reg; u32 reg;
duplex = core_readl(priv, CORE_DUPSTS); duplex = core_readl(priv, CORE_DUPSTS);
pause = core_readl(priv, CORE_PAUSESTS); pause = core_readl(priv, CORE_PAUSESTS);
speed = core_readl(priv, CORE_SPDSTS);
speed >>= (port * SPDSTS_SHIFT);
speed &= SPDSTS_MASK;
status->link = 0; status->link = 0;
@ -933,18 +929,6 @@ static void bcm_sf2_sw_fixed_link_update(struct dsa_switch *ds, int port,
reg &= ~LINK_STS; reg &= ~LINK_STS;
core_writel(priv, reg, CORE_STS_OVERRIDE_GMIIP_PORT(port)); core_writel(priv, reg, CORE_STS_OVERRIDE_GMIIP_PORT(port));
switch (speed) {
case SPDSTS_10:
status->speed = SPEED_10;
break;
case SPDSTS_100:
status->speed = SPEED_100;
break;
case SPDSTS_1000:
status->speed = SPEED_1000;
break;
}
if ((pause & (1 << port)) && if ((pause & (1 << port)) &&
(pause & (1 << (port + PAUSESTS_TX_PAUSE_SHIFT)))) { (pause & (1 << (port + PAUSESTS_TX_PAUSE_SHIFT)))) {
status->asym_pause = 1; status->asym_pause = 1;