sky2: Add PCI device specfic register 4 & 5

Need to setup more PCI control control registers are on Yukon EX.
Some of these also exist on Yukon EC-U as well.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 12 insertions, 6 deletions

diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index 612257172b95..0bd74fe5c338 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -217,13 +217,19 @@ static void sky2_power_on(struct sky2_hw *hw)
                 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
 
         if (hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_EX) {
-                u32 reg1;
+                u32 reg;
 
-                sky2_pci_write32(hw, PCI_DEV_REG3, 0);
-                reg1 = sky2_pci_read32(hw, PCI_DEV_REG4);
-                reg1 &= P_ASPM_CONTROL_MSK;
-                sky2_pci_write32(hw, PCI_DEV_REG4, reg1);
-                sky2_pci_write32(hw, PCI_DEV_REG5, 0);
+                reg = sky2_pci_read32(hw, PCI_DEV_REG4);
+                /* set all bits to 0 except bits 15..12 and 8 */
+                reg &= P_ASPM_CONTROL_MSK;
+                sky2_pci_write32(hw, PCI_DEV_REG4, reg);
+
+                reg = sky2_pci_read32(hw, PCI_DEV_REG5);
+                /* set all bits to 0 except bits 28 & 27 */
+                reg &= P_CTL_TIM_VMAIN_AV_MSK;
+                sky2_pci_write32(hw, PCI_DEV_REG5, reg);
+
+                sky2_pci_write32(hw, PCI_CFG_REG_1, 0);
         }
 }