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net/designware: Try configuring phy on each dw_eth_init

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Phy autonegotiation works only when the ethernet cable is plugged in.
Since the phy was configured only at the init time, a plugged in cable
was necessary to initialize the phy properly.

This patch keeps a flag to check if the phy initialization has
succeeded, and calls configure_phy routine at every init if this flag
reports otherwise.

Signed-off-by: Vipin Kumar <vipin.kumar@st.com>
Signed-off-by: Amit Virdi <amit.virdi@st.com>
This commit is contained in:
Vipin Kumar 2012-03-26 00:09:56 +00:00 • committed by Joe Hershberger
parent aa51005c3f
commit 13edd1706c
2 changed files with 29 additions and 20 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

48
drivers/net/designware.c
View file

@ -32,6 +32,8 @@
#include <asm/io.h>
#include "designware.h"
static int configure_phy(struct eth_device *dev);
static void tx_descs_init(struct eth_device *dev)
{
struct dw_eth_dev *priv = dev->priv;
@ -144,6 +146,9 @@ static int dw_eth_init(struct eth_device *dev, bd_t *bis)
struct eth_dma_regs *dma_p = priv->dma_regs_p;
u32 conf;
if (priv->phy_configured != 1)
configure_phy(dev);
/* Reset ethernet hardware */
if (mac_reset(dev) < 0)
return -1;
@ -422,23 +427,26 @@ static int configure_phy(struct eth_device *dev)
eth_mdio_read(dev, phy_addr, MII_LPA, &anlpar);
eth_mdio_read(dev, phy_addr, MII_STAT1000, &btsr);
if (btsr & (PHY_1000BTSR_1000FD | PHY_1000BTSR_1000HD)) {
priv->speed = SPEED_1000M;
if (btsr & PHY_1000BTSR_1000FD)
priv->duplex = FULL_DUPLEX;
else
priv->duplex = HALF_DUPLEX;
} else {
if (anlpar & LPA_100)
priv->speed = SPEED_100M;
else
priv->speed = SPEED_10M;
if (bmsr & BMSR_ANEGCOMPLETE) {
if (btsr & (PHY_1000BTSR_1000FD | PHY_1000BTSR_1000HD)) {
priv->speed = SPEED_1000M;
if (btsr & PHY_1000BTSR_1000FD)
priv->duplex = FULL_DUPLEX;
else
priv->duplex = HALF_DUPLEX;
} else {
if (anlpar & LPA_100)
priv->speed = SPEED_100M;
else
priv->speed = SPEED_10M;
if (anlpar & (LPA_10FULL | LPA_100FULL))
priv->duplex = FULL_DUPLEX;
else
priv->duplex = HALF_DUPLEX;
}
if (anlpar & (LPA_10FULL | LPA_100FULL))
priv->duplex = FULL_DUPLEX;
else
priv->duplex = HALF_DUPLEX;
}
} else
return -1;
#else
if (eth_mdio_read(dev, phy_addr, MII_BMCR, &ctrl) < 0)
return -1;
@ -455,6 +463,8 @@ static int configure_phy(struct eth_device *dev)
else
priv->speed = SPEED_10M;
#endif
priv->phy_configured = 1;
return 0;
}
@ -515,14 +525,12 @@ int designware_initialize(u32 id, ulong base_addr, u32 phy_addr)
priv->dma_regs_p = (struct eth_dma_regs *)(base_addr +
DW_DMA_BASE_OFFSET);
priv->address = phy_addr;
priv->phy_configured = 0;
if (mac_reset(dev) < 0)
return -1;
if (configure_phy(dev) < 0) {
printf("Phy could not be configured\n");
return -1;
}
configure_phy(dev);
dev->init = dw_eth_init;
dev->send = dw_eth_send;

1
drivers/net/designware.h
View file

@ -238,6 +238,7 @@ struct dw_eth_dev {
u32 duplex;
u32 tx_currdescnum;
u32 rx_currdescnum;
u32 phy_configured;
u32 padding;
struct dmamacdescr tx_mac_descrtable[CONFIG_TX_DESCR_NUM];