diff options
| author |   Hemanth Puranik <hpuranik@codeaurora.org> | 2017-12-15 20:05:58 +0530 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2017-12-15 15:46:19 -0500 |
| commit | 043ee1debd0b29c16c4c4b11a348ca667bfe9144 (patch) | |
| tree | 08de78013d694045ecaa5212b06a81a911caa3fd /drivers/net/ethernet/qualcomm/emac/emac-phy.c | |
| parent | net: sched: fix static key imbalance in case of ingress/clsact_init error (diff) | |
| download | linux-dev-043ee1debd0b29c16c4c4b11a348ca667bfe9144.tar.xz linux-dev-043ee1debd0b29c16c4c4b11a348ca667bfe9144.zip | |
net: qcom/emac: Reduce timeout for mdio read/write
Currently mdio read/write takes around ~115us as the timeout
between status check is set to 100us.
By reducing the timeout to 1us mdio read/write takes ~15us to
complete. This improves the link up event response.
Signed-off-by: Hemanth Puranik <hpuranik@codeaurora.org>
Acked-by: Timur Tabi <timur@codeaurora.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
| -rw-r--r-- | drivers/net/ethernet/qualcomm/emac/emac-phy.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/net/ethernet/qualcomm/emac/emac-phy.c b/drivers/net/ethernet/qualcomm/emac/emac-phy.c index 18461fcb9815..53dbf1e163a8 100644 --- a/drivers/net/ethernet/qualcomm/emac/emac-phy.c +++ b/drivers/net/ethernet/qualcomm/emac/emac-phy.c @@ -47,6 +47,7 @@ #define MDIO_CLK_25_28 7 #define MDIO_WAIT_TIMES 1000 +#define MDIO_STATUS_DELAY_TIME 1 static int emac_mdio_read(struct mii_bus *bus, int addr, int regnum) { @@ -65,7 +66,7 @@ static int emac_mdio_read(struct mii_bus *bus, int addr, int regnum) if (readl_poll_timeout(adpt->base + EMAC_MDIO_CTRL, reg, !(reg & (MDIO_START | MDIO_BUSY)), - 100, MDIO_WAIT_TIMES * 100)) + MDIO_STATUS_DELAY_TIME, MDIO_WAIT_TIMES * 100)) return -EIO; return (reg >> MDIO_DATA_SHFT) & MDIO_DATA_BMSK; @@ -88,8 +89,8 @@ static int emac_mdio_write(struct mii_bus *bus, int addr, int regnum, u16 val) writel(reg, adpt->base + EMAC_MDIO_CTRL); if (readl_poll_timeout(adpt->base + EMAC_MDIO_CTRL, reg, - !(reg & (MDIO_START | MDIO_BUSY)), 100, - MDIO_WAIT_TIMES * 100)) + !(reg & (MDIO_START | MDIO_BUSY)), + MDIO_STATUS_DELAY_TIME, MDIO_WAIT_TIMES * 100)) return -EIO; return 0; |