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sky2: clear PCI power control reg at startup

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Make sure PCI register for PHY power gets cleared on boot, and make
sure to avoid any PCI posting problems.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Stephen Hemminger
2007-08-21 14:34:02 -07:00
committed by Jeff Garzik
parent c46ac9463f
commit b23457737f
1 changed files with 6 additions and 1 deletions
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7
drivers/net/sky2.c
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@@ -219,9 +219,12 @@ static void sky2_power_on(struct sky2_hw *hw)
else else
sky2_write8(hw, B2_Y2_CLK_GATE, 0); sky2_write8(hw, B2_Y2_CLK_GATE, 0);
if (hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_EX) { if (hw->chip_id == CHIP_ID_YUKON_EC_U ||
hw->chip_id == CHIP_ID_YUKON_EX) {
u32 reg; u32 reg;
sky2_pci_write32(hw, PCI_DEV_REG3, 0);
reg = sky2_pci_read32(hw, PCI_DEV_REG4); reg = sky2_pci_read32(hw, PCI_DEV_REG4);
/* set all bits to 0 except bits 15..12 and 8 */ /* set all bits to 0 except bits 15..12 and 8 */
reg &= P_ASPM_CONTROL_MSK; reg &= P_ASPM_CONTROL_MSK;
@@ -238,6 +241,8 @@ static void sky2_power_on(struct sky2_hw *hw)
reg = sky2_read32(hw, B2_GP_IO); reg = sky2_read32(hw, B2_GP_IO);
reg |= GLB_GPIO_STAT_RACE_DIS; reg |= GLB_GPIO_STAT_RACE_DIS;
sky2_write32(hw, B2_GP_IO, reg); sky2_write32(hw, B2_GP_IO, reg);
sky2_read32(hw, B2_GP_IO);
} }
} }