summaryrefslogtreecommitdiff
path: root/drivers/net/phy/at803x.c
diff options
context:
space:
mode:
authorMugunthan V N <mugunthanvnm@ti.com>2013-06-04 00:10:06 +0400
committerDavid S. Miller <davem@davemloft.net>2013-06-05 01:17:21 +0400
commit1ca6d1b1aef4628ff0fe458135ddb008d134ad8f (patch)
tree314e9805e0cdacec652c91501e0a7afaea7f880d /drivers/net/phy/at803x.c
parentea13c9ee855cc60973458d1adeee9b35f0466a29 (diff)
downloadlinux-1ca6d1b1aef4628ff0fe458135ddb008d134ad8f.tar.xz
drivers: net: phy: at803x: add interface mode support
This patch adds support for RGMII TX delay configuration on Atheros 803X, this can be enabled in debug registers. With this patch, PHY_INTERFACE_MODE_RGMII_TXID modes are now supported. Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/phy/at803x.c')
-rw-r--r--drivers/net/phy/at803x.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c
index 63444b7b7013..dda07edf4173 100644
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -27,6 +27,10 @@
#define AT803X_MMD_ACCESS_CONTROL 0x0D
#define AT803X_MMD_ACCESS_CONTROL_DATA 0x0E
#define AT803X_FUNC_DATA 0x4003
+#define AT803X_DEBUG_ADDR 0x1D
+#define AT803X_DEBUG_DATA 0x1E
+#define AT803X_DEBUG_SYSTEM_MODE_CTRL 0x05
+#define AT803X_DEBUG_RGMII_TX_CLK_DLY BIT(8)
MODULE_DESCRIPTION("Atheros 803x PHY driver");
MODULE_AUTHOR("Matus Ujhelyi");
@@ -99,6 +103,7 @@ static void at803x_get_wol(struct phy_device *phydev,
static int at803x_config_init(struct phy_device *phydev)
{
int val;
+ int ret;
u32 features;
features = SUPPORTED_TP | SUPPORTED_MII | SUPPORTED_AUI |
@@ -133,6 +138,17 @@ static int at803x_config_init(struct phy_device *phydev)
phydev->supported = features;
phydev->advertising = features;
+ if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) {
+ ret = phy_write(phydev, AT803X_DEBUG_ADDR,
+ AT803X_DEBUG_SYSTEM_MODE_CTRL);
+ if (ret)
+ return ret;
+ ret = phy_write(phydev, AT803X_DEBUG_DATA,
+ AT803X_DEBUG_RGMII_TX_CLK_DLY);
+ if (ret)
+ return ret;
+ }
+
return 0;
}