Currently there is a fixed 1000ms wait time after the switch was reset. Most if not all switches need much less time to perform a reset. Therefore replace the fixed wait time with polling for BMCR_RESET to be cleared.
Signed-off-by: Heiner Kallweit <[email protected]> --- .../linux/generic/files/drivers/net/phy/ar8216.c | 30 +++++++++++++++++++--- 1 file changed, 27 insertions(+), 3 deletions(-) diff --git a/target/linux/generic/files/drivers/net/phy/ar8216.c b/target/linux/generic/files/drivers/net/phy/ar8216.c index 5850968..ffc5dcf 100644 --- a/target/linux/generic/files/drivers/net/phy/ar8216.c +++ b/target/linux/generic/files/drivers/net/phy/ar8216.c @@ -316,6 +316,29 @@ split_addr(u32 regaddr, u16 *r1, u16 *r2, u16 *page) *page = regaddr & 0x1ff; } +/* inspired by phy_poll_reset in drivers/net/phy/phy_device.c */ +static int +ar8xxx_phy_poll_reset(struct mii_bus *bus) +{ + unsigned int sleep_msecs = 20; + int ret, elapsed, i; + + for (elapsed = sleep_msecs; elapsed <= 600; + elapsed += sleep_msecs) { + msleep(sleep_msecs); + for (i = 0; i < AR8XXX_NUM_PHYS; i++) { + ret = mdiobus_read(bus, i, MII_BMCR); + if (ret < 0) return ret; + if (ret & BMCR_RESET) break; + if (i == AR8XXX_NUM_PHYS - 1) { + usleep_range(1000, 2000); + return 0; + } + } + } + return -ETIMEDOUT; +} + static u32 ar8xxx_mii_read(struct ar8xxx_priv *priv, int reg) { @@ -876,7 +899,8 @@ ar8236_hw_init(struct ar8xxx_priv *priv) ADVERTISE_PAUSE_ASYM); mdiobus_write(bus, i, MII_BMCR, BMCR_RESET | BMCR_ANENABLE); } - msleep(1000); + + ar8xxx_phy_poll_reset(bus); priv->initialized = true; return 0; @@ -964,7 +988,7 @@ ar8316_hw_init(struct ar8xxx_priv *priv) mdiobus_write(bus, i, MII_BMCR, BMCR_RESET | BMCR_ANENABLE); } - msleep(1000); + ar8xxx_phy_poll_reset(bus); out: priv->initialized = true; @@ -1622,7 +1646,7 @@ ar8327_hw_init(struct ar8xxx_priv *priv) mdiobus_write(bus, i, MII_BMCR, BMCR_RESET | BMCR_ANENABLE); } - msleep(1000); + ar8xxx_phy_poll_reset(bus); return 0; } -- 2.1.2 _______________________________________________ openwrt-devel mailing list [email protected] https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel
