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mvebu: neta: a37xx: Add fixed link support to neta driver

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Add support for fixed link to NETA driver.
This feature requreed for proper support of SFP modules
and onboard connected devices like Ethernet switches

Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>
Signed-off-by: Terry Zhou <bjzhou@marvell.com>
Cc: Stefan Roese <sr@denx.de>
Cc: Igal Liberman <igall@marvell.com>
Cc: Nadav Haklai <nadavh@marvell.com>
Signed-off-by: Stefan Roese <sr@denx.de>
master
Konstantin Porotchkin 8 years ago committed by Stefan Roese
parent 976feda2d8
commit 278d30c802
1 changed files with 82 additions and 27 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 109
      drivers/net/mvneta.c

109
drivers/net/mvneta.c
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@ -191,11 +191,16 @@ DECLARE_GLOBAL_DATA_PTR;
#define MVNETA_GMAC_AUTONEG_CONFIG 0x2c0c
#define MVNETA_GMAC_FORCE_LINK_DOWN BIT(0)
#define MVNETA_GMAC_FORCE_LINK_PASS BIT(1)
#define MVNETA_GMAC_FORCE_LINK_UP (BIT(0) | BIT(1))
#define MVNETA_GMAC_IB_BYPASS_AN_EN BIT(3)
#define MVNETA_GMAC_CONFIG_MII_SPEED BIT(5)
#define MVNETA_GMAC_CONFIG_GMII_SPEED BIT(6)
#define MVNETA_GMAC_AN_SPEED_EN BIT(7)
#define MVNETA_GMAC_SET_FC_EN BIT(8)
#define MVNETA_GMAC_ADVERT_FC_EN BIT(9)
#define MVNETA_GMAC_CONFIG_FULL_DUPLEX BIT(12)
#define MVNETA_GMAC_AN_DUPLEX_EN BIT(13)
#define MVNETA_GMAC_SAMPLE_TX_CFG_EN BIT(15)
#define MVNETA_MIB_COUNTERS_BASE 0x3080
#define MVNETA_MIB_LATE_COLLISION 0x7c
#define MVNETA_DA_FILT_SPEC_MCAST 0x3400
@ -566,6 +571,13 @@ static void mvneta_rxq_buf_size_set(struct mvneta_port *pp,
mvreg_write(pp, MVNETA_RXQ_SIZE_REG(rxq->id), val);
}
static int mvneta_port_is_fixed_link(struct mvneta_port *pp)
{
/* phy_addr is set to invalid value for fixed link */
return pp->phyaddr > PHY_MAX_ADDR;
}
/* Start the Ethernet port RX and TX activity */
static void mvneta_port_up(struct mvneta_port *pp)
{
@ -816,10 +828,12 @@ static void mvneta_defaults_set(struct mvneta_port *pp)
/* Assign port SDMA configuration */
mvreg_write(pp, MVNETA_SDMA_CONFIG, val);
/* Enable PHY polling in hardware for U-Boot */
val = mvreg_read(pp, MVNETA_UNIT_CONTROL);
val |= MVNETA_PHY_POLLING_ENABLE;
mvreg_write(pp, MVNETA_UNIT_CONTROL, val);
/* Enable PHY polling in hardware if not in fixed-link mode */
if (!mvneta_port_is_fixed_link(pp)) {
val = mvreg_read(pp, MVNETA_UNIT_CONTROL);
val |= MVNETA_PHY_POLLING_ENABLE;
mvreg_write(pp, MVNETA_UNIT_CONTROL, val);
}
mvneta_set_ucast_table(pp, -1);
mvneta_set_special_mcast_table(pp, -1);
@ -1137,6 +1151,11 @@ static void mvneta_adjust_link(struct udevice *dev)
struct phy_device *phydev = pp->phydev;
int status_change = 0;
if (mvneta_port_is_fixed_link(pp)) {
debug("Using fixed link, skip link adjust\n");
return;
}
if (phydev->link) {
if ((pp->speed != phydev->speed) ||
(pp->duplex != phydev->duplex)) {
@ -1507,28 +1526,54 @@ static int mvneta_start(struct udevice *dev)
mvneta_port_power_up(pp, pp->phy_interface);
if (!pp->init || pp->link == 0) {
/* Set phy address of the port */
mvreg_write(pp, MVNETA_PHY_ADDR, pp->phyaddr);
phydev = phy_connect(pp->bus, pp->phyaddr, dev,
pp->phy_interface);
pp->phydev = phydev;
phy_config(phydev);
phy_startup(phydev);
if (!phydev->link) {
printf("%s: No link.\n", phydev->dev->name);
return -1;
}
if (mvneta_port_is_fixed_link(pp)) {
u32 val;
/* Full init on first call */
mvneta_init(dev);
pp->init = 1;
} else {
/* Upon all following calls, this is enough */
mvneta_port_up(pp);
mvneta_port_enable(pp);
pp->init = 1;
pp->link = 1;
mvneta_init(dev);
val = MVNETA_GMAC_FORCE_LINK_UP |
MVNETA_GMAC_IB_BYPASS_AN_EN |
MVNETA_GMAC_SET_FC_EN |
MVNETA_GMAC_ADVERT_FC_EN |
MVNETA_GMAC_SAMPLE_TX_CFG_EN;
if (pp->duplex)
val |= MVNETA_GMAC_CONFIG_FULL_DUPLEX;
if (pp->speed == SPEED_1000)
val |= MVNETA_GMAC_CONFIG_GMII_SPEED;
else if (pp->speed == SPEED_100)
val |= MVNETA_GMAC_CONFIG_MII_SPEED;
mvreg_write(pp, MVNETA_GMAC_AUTONEG_CONFIG, val);
} else {
/* Set phy address of the port */
mvreg_write(pp, MVNETA_PHY_ADDR, pp->phyaddr);
phydev = phy_connect(pp->bus, pp->phyaddr, dev,
pp->phy_interface);
pp->phydev = phydev;
phy_config(phydev);
phy_startup(phydev);
if (!phydev->link) {
printf("%s: No link.\n", phydev->dev->name);
return -1;
}
/* Full init on first call */
mvneta_init(dev);
pp->init = 1;
return 0;
}
}
/* Upon all following calls, this is enough */
mvneta_port_up(pp);
mvneta_port_enable(pp);
return 0;
}
@ -1625,6 +1670,7 @@ static int mvneta_probe(struct udevice *dev)
unsigned long addr;
void *bd_space;
int ret;
int fl_node;
/*
* Allocate buffer area for descs and rx_buffers. This is only
@ -1657,10 +1703,19 @@ static int mvneta_probe(struct udevice *dev)
/* PHY interface is already decoded in mvneta_ofdata_to_platdata() */
pp->phy_interface = pdata->phy_interface;
/* Now read phyaddr from DT */
addr = fdtdec_get_int(blob, node, "phy", 0);
addr = fdt_node_offset_by_phandle(blob, addr);
pp->phyaddr = fdtdec_get_int(blob, addr, "reg", 0);
/* fetch 'fixed-link' property from 'neta' node */
fl_node = fdt_subnode_offset(blob, node, "fixed-link");
if (fl_node != -FDT_ERR_NOTFOUND) {
/* set phy_addr to invalid value for fixed link */
pp->phyaddr = PHY_MAX_ADDR + 1;
pp->duplex = fdtdec_get_bool(blob, fl_node, "full-duplex");
pp->speed = fdtdec_get_int(blob, fl_node, "speed", 0);
} else {
/* Now read phyaddr from DT */
addr = fdtdec_get_int(blob, node, "phy", 0);
addr = fdt_node_offset_by_phandle(blob, addr);
pp->phyaddr = fdtdec_get_int(blob, addr, "reg", 0);
}
bus = mdio_alloc();
if (!bus) {

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