[U-Boot] [U-boot] [Patch v2 4/6] net: keystone_net: increase PHY auto negotiate time
Ivan Khoronzhuk
ivan.khoronzhuk at ti.com
Fri Oct 17 20:01:15 CEST 2014
The new Marvel PHY (88E1514) used on K2L/K2E EVM requires longer time
to auto negotiate with SoC's SGMII port.
It can take about 3 sec to up the PHY after reset, so add code to
expose sgmii auto negotiation waiting process.
Acked-by: Vitaly Andrianov <vitalya at ti.com>
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk at ti.com>
---
drivers/net/keystone_net.c | 36 +++++++++++++++++++++++++++++++-----
1 file changed, 31 insertions(+), 5 deletions(-)
diff --git a/drivers/net/keystone_net.c b/drivers/net/keystone_net.c
index 1186188..c8681d0 100644
--- a/drivers/net/keystone_net.c
+++ b/drivers/net/keystone_net.c
@@ -11,6 +11,7 @@
#include <net.h>
#include <phy.h>
+#include <errno.h>
#include <miiphy.h>
#include <malloc.h>
#include <asm/ti-common/keystone_nav.h>
@@ -30,6 +31,7 @@ static unsigned int sys_has_mdio = 1;
#define RX_BUFF_NUMS 24
#define RX_BUFF_LEN 1520
#define MAX_SIZE_STREAM_BUFFER RX_BUFF_LEN
+#define SGMII_ANEG_TIMEOUT 4000
static u8 rx_buffs[RX_BUFF_NUMS * RX_BUFF_LEN] __aligned(16);
@@ -169,7 +171,7 @@ int keystone_sgmii_link_status(int port)
(status & SGMII_REG_STATUS_LINK);
}
-int keystone_sgmii_config(int port, int interface)
+int keystone_sgmii_config(struct phy_device *phy_dev, int port, int interface)
{
unsigned int i, status, mask;
unsigned int mr_adv_ability, control;
@@ -230,11 +232,35 @@ int keystone_sgmii_config(int port, int interface)
if (control & SGMII_REG_CONTROL_AUTONEG)
mask |= SGMII_REG_STATUS_AUTONEG;
- for (i = 0; i < 1000; i++) {
+ status = __raw_readl(SGMII_STATUS_REG(port));
+ if ((status & mask) == mask)
+ return 0;
+
+ printf("\n%s Waiting for SGMII auto negotiation to complete",
+ phy_dev->dev->name);
+ while ((status & mask) != mask) {
+ /*
+ * Timeout reached ?
+ */
+ if (i > SGMII_ANEG_TIMEOUT) {
+ puts(" TIMEOUT !\n");
+ phy_dev->link = 0;
+ return 0;
+ }
+
+ if (ctrlc()) {
+ puts("user interrupt!\n");
+ phy_dev->link = 0;
+ return -EINTR;
+ }
+
+ if ((i++ % 500) == 0)
+ printf(".");
+
+ udelay(1000); /* 1 ms */
status = __raw_readl(SGMII_STATUS_REG(port));
- if ((status & mask) == mask)
- break;
}
+ puts(" done\n");
return 0;
}
@@ -374,7 +400,7 @@ static int keystone2_eth_open(struct eth_device *dev, bd_t *bis)
keystone2_net_serdes_setup();
- keystone_sgmii_config(eth_priv->slave_port - 1,
+ keystone_sgmii_config(phy_dev, eth_priv->slave_port - 1,
eth_priv->sgmii_link_type);
udelay(10000);
--
1.8.3.2
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