diff options
| author | Michael Chan <mchan@broadcom.com> | 2005-12-19 16:26:28 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2005-12-19 16:26:28 -0800 |
| commit | dc56b7d46dd2b303a844166ef931270b882bf08c (patch) | |
| tree | 80b4270d0addf4cf335b9dd47e5c4507c8f8a7b6 /drivers/net | |
| parent | 8c2dc7e1e7213c55f1b97eba09de6c0cee9ad12f (diff) | |
| download | lwn-dc56b7d46dd2b303a844166ef931270b882bf08c.tar.gz lwn-dc56b7d46dd2b303a844166ef931270b882bf08c.zip | |
[TG3]: Some low power fixes
Add some missing workarounds in tg3_set_power_state():
1. Workaround to prevent overdrawing current on 5714.
2. Do not power down 5700's PHY because of hw limitation.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/tg3.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c index d8691224b0b3..de898f175d73 100644 --- a/drivers/net/tg3.c +++ b/drivers/net/tg3.c @@ -1042,17 +1042,26 @@ static void tg3_frob_aux_power(struct tg3 *tp) udelay(100); } else { u32 no_gpio2; - u32 grc_local_ctrl; + u32 grc_local_ctrl = 0; if (tp_peer != tp && (tp_peer->tg3_flags & TG3_FLAG_INIT_COMPLETE) != 0) return; + /* Workaround to prevent overdrawing Amps. */ + if (GET_ASIC_REV(tp->pci_chip_rev_id) == + ASIC_REV_5714) { + grc_local_ctrl |= GRC_LCLCTRL_GPIO_OE3; + tw32_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl | + grc_local_ctrl); + udelay(100); + } + /* On 5753 and variants, GPIO2 cannot be used. */ no_gpio2 = tp->nic_sram_data_cfg & NIC_SRAM_DATA_CFG_NO_GPIO2; - grc_local_ctrl = GRC_LCLCTRL_GPIO_OE0 | + grc_local_ctrl |= GRC_LCLCTRL_GPIO_OE0 | GRC_LCLCTRL_GPIO_OE1 | GRC_LCLCTRL_GPIO_OE2 | GRC_LCLCTRL_GPIO_OUTPUT1 | @@ -1297,7 +1306,8 @@ static int tg3_set_power_state(struct tg3 *tp, int state) tg3_writephy(tp, MII_TG3_EXT_CTRL, MII_TG3_EXT_CTRL_FORCE_LED_OFF); tg3_writephy(tp, MII_TG3_AUX_CTRL, 0x01b2); - tg3_writephy(tp, MII_BMCR, BMCR_PDOWN); + if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5700) + tg3_writephy(tp, MII_BMCR, BMCR_PDOWN); } } |