summaryrefslogtreecommitdiff
path: root/drivers/net/phy
diff options
context:
space:
mode:
authorRaju Lakkaraju <Raju.Lakkaraju@microchip.com>2018-12-18 14:57:56 +0530
committerDavid S. Miller <davem@davemloft.net>2018-12-19 10:33:25 -0800
commit7b98f63ea777d90abaca41beadf71e3f62d180e0 (patch)
treebdf017dc6018305af632eeef237cd752f131ef23 /drivers/net/phy
parent29d3c047b7038d7efce4f279e4d4165d69f6ccb9 (diff)
net: phy: mscc: Fix the VSC 8531/41 Chip Init sequence
- Turn on Broadcast writes - UNH 1.8.1 clear bias for UNH 1000BT distortion - UNH 1.8.7 optimize pre-emphasis for 100BasTx UNH 100W fix - Enable Token-ring during 'Coma Mode' Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microchip.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/phy')
-rw-r--r--drivers/net/phy/mscc.c55
1 files changed, 54 insertions, 1 deletions
diff --git a/drivers/net/phy/mscc.c b/drivers/net/phy/mscc.c
index cfe680f78a3f..3949fe299b18 100644
--- a/drivers/net/phy/mscc.c
+++ b/drivers/net/phy/mscc.c
@@ -853,6 +853,51 @@ static void vsc85xx_tr_write(struct phy_device *phydev, u16 addr, u32 val)
__phy_write(phydev, MSCC_PHY_TR_CNTL, TR_WRITE | TR_ADDR(addr));
}
+static int vsc8531_pre_init_seq_set(struct phy_device *phydev)
+{
+ int rc;
+ const struct reg_val init_seq[] = {
+ {0x0f90, 0x00688980},
+ {0x0696, 0x00000003},
+ {0x07fa, 0x0050100f},
+ {0x1686, 0x00000004},
+ };
+ unsigned int i;
+ int oldpage;
+
+ rc = phy_modify_paged(phydev, MSCC_PHY_PAGE_STANDARD,
+ MSCC_PHY_EXT_CNTL_STATUS, SMI_BROADCAST_WR_EN,
+ SMI_BROADCAST_WR_EN);
+ if (rc < 0)
+ return rc;
+ rc = phy_modify_paged(phydev, MSCC_PHY_PAGE_TEST,
+ MSCC_PHY_TEST_PAGE_24, 0, 0x0400);
+ if (rc < 0)
+ return rc;
+ rc = phy_modify_paged(phydev, MSCC_PHY_PAGE_TEST,
+ MSCC_PHY_TEST_PAGE_5, 0x0a00, 0x0e00);
+ if (rc < 0)
+ return rc;
+ rc = phy_modify_paged(phydev, MSCC_PHY_PAGE_TEST,
+ MSCC_PHY_TEST_PAGE_8, 0x8000, 0x8000);
+ if (rc < 0)
+ return rc;
+
+ mutex_lock(&phydev->lock);
+ oldpage = phy_select_page(phydev, MSCC_PHY_PAGE_TR);
+ if (oldpage < 0)
+ goto out_unlock;
+
+ for (i = 0; i < ARRAY_SIZE(init_seq); i++)
+ vsc85xx_tr_write(phydev, init_seq[i].reg, init_seq[i].val);
+
+out_unlock:
+ oldpage = phy_restore_page(phydev, oldpage, oldpage);
+ mutex_unlock(&phydev->lock);
+
+ return oldpage;
+}
+
static int vsc85xx_eee_init_seq_set(struct phy_device *phydev)
{
const struct reg_val init_eee[] = {
@@ -1650,7 +1695,7 @@ err:
static int vsc85xx_config_init(struct phy_device *phydev)
{
- int rc, i;
+ int rc, i, phy_id;
struct vsc8531_private *vsc8531 = phydev->priv;
rc = vsc85xx_default_config(phydev);
@@ -1665,6 +1710,14 @@ static int vsc85xx_config_init(struct phy_device *phydev)
if (rc)
return rc;
+ phy_id = phydev->drv->phy_id & phydev->drv->phy_id_mask;
+ if (PHY_ID_VSC8531 == phy_id || PHY_ID_VSC8541 == phy_id ||
+ PHY_ID_VSC8530 == phy_id || PHY_ID_VSC8540 == phy_id) {
+ rc = vsc8531_pre_init_seq_set(phydev);
+ if (rc)
+ return rc;
+ }
+
rc = vsc85xx_eee_init_seq_set(phydev);
if (rc)
return rc;