From 4edcf0a3dfd3cfa6b6c99dd1c893b7c96aa52d12 Mon Sep 17 00:00:00 2001 From: Julius Werner Date: Sat, 11 May 2013 13:35:02 -0700 Subject: usb: asix: Move software resets to basic_init The ASIX driver calls a basic_init() function during get_info(), so that not all initialization tasks need to be redone on every init(). Unfortunately, the most important one is still triggered too often: the driver does a full port and MII reset on every asix_init(), requiring up to several seconds to reestablish the link. This patch confines that software reset into the asix_basic_init() function so that it will only be executed once. This saves about a second of boot time on systems using BOOTP. Note: this patch was previously submitted many moons ago as: usb: usbeth: asix: Do a fast init if link already established That patch seens to have been lost or forgotten, so this is a rebased version. It is tested on snow with a Asix USB dongle (Cisco). Signed-off-by: Julius Werner Signed-off-by: Simon Glass Reviewed-by: Simon Glass Reviewed-by: Vadim Bendebury --- drivers/usb/eth/asix.c | 40 +++++++++++++++++----------------------- 1 file changed, 17 insertions(+), 23 deletions(-) (limited to 'drivers/usb/eth') diff --git a/drivers/usb/eth/asix.c b/drivers/usb/eth/asix.c index 75ec8f7881..76624b9256 100644 --- a/drivers/usb/eth/asix.c +++ b/drivers/usb/eth/asix.c @@ -407,46 +407,40 @@ static int asix_basic_reset(struct ueth_data *dev) rx_ctl = asix_read_rx_ctl(dev); debug("RX_CTL is 0x%04x setting to 0x0000\n", rx_ctl); - return 0; -} - -/* - * Asix callbacks - */ -static int asix_init(struct eth_device *eth, bd_t *bd) -{ - struct ueth_data *dev = (struct ueth_data *)eth->priv; - int timeout = 0; -#define TIMEOUT_RESOLUTION 50 /* ms */ - int link_detected; - - debug("** %s()\n", __func__); - dev->phy_id = asix_get_phy_addr(dev); if (dev->phy_id < 0) debug("Failed to read phy id\n"); - if (asix_sw_reset(dev, AX_SWRESET_PRL) < 0) - goto out_err; - - if (asix_sw_reset(dev, AX_SWRESET_IPRL | AX_SWRESET_PRL) < 0) - goto out_err; - asix_mdio_write(dev, dev->phy_id, MII_BMCR, BMCR_RESET); asix_mdio_write(dev, dev->phy_id, MII_ADVERTISE, ADVERTISE_ALL | ADVERTISE_CSMA); mii_nway_restart(dev); if (asix_write_medium_mode(dev, AX88772_MEDIUM_DEFAULT) < 0) - goto out_err; + return -1; if (asix_write_cmd(dev, AX_CMD_WRITE_IPG0, AX88772_IPG0_DEFAULT | AX88772_IPG1_DEFAULT, AX88772_IPG2_DEFAULT, 0, NULL) < 0) { debug("Write IPG,IPG1,IPG2 failed\n"); - goto out_err; + return -1; } + return 0; +} + +/* + * Asix callbacks + */ +static int asix_init(struct eth_device *eth, bd_t *bd) +{ + struct ueth_data *dev = (struct ueth_data *)eth->priv; + int timeout = 0; +#define TIMEOUT_RESOLUTION 50 /* ms */ + int link_detected; + + debug("** %s()\n", __func__); + if (asix_write_rx_ctl(dev, AX_DEFAULT_RX_CTL) < 0) goto out_err; -- cgit v1.2.1