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| author | Shengzhou Liu <Shengzhou.Liu@freescale.com> | 2015-03-23 10:22:13 (GMT) |
|---|---|---|
| committer | Honghua Yin <Hong-Hua.Yin@freescale.com> | 2015-03-27 08:39:35 (GMT) |
| commit | 554f5e2a32cd5b13627d1da10b11b242de046a70 (patch) | |
| tree | a15b292c5eaea0d7064fa6799f14d7eef310434b /drivers/net/ethernet/freescale/xgmac_mdio.c | |
| parent | fc3261c1e7c734758113ef9fe7bf5a5ab7f569df (diff) | |
| download | linux-fsl-qoriq-554f5e2a32cd5b13627d1da10b11b242de046a70.tar.xz | |
fsl/mdio: fixup xgmac_mdio_read for rtl8211f on t1023rdb
Read RTL8211F PHY registers(e.g. PHY_ID, MII_STAT1000) will fail
with xgmac_mdio_read on T1023RDB. so add the MDIO timing delay in
xgmac_mdio_read to make it work stably with RTL8211F on T1023RDB.
Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Change-Id: Ib85b1858d1cca310992b892dd1c86a129c36e7d2
Reviewed-on: http://git.am.freescale.net:8181/33272
Tested-by: Honghua Yin <Hong-Hua.Yin@freescale.com>
Reviewed-by: Honghua Yin <Hong-Hua.Yin@freescale.com>
Diffstat (limited to 'drivers/net/ethernet/freescale/xgmac_mdio.c')
| -rw-r--r-- | drivers/net/ethernet/freescale/xgmac_mdio.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/net/ethernet/freescale/xgmac_mdio.c b/drivers/net/ethernet/freescale/xgmac_mdio.c index 2263477..dca1325 100644 --- a/drivers/net/ethernet/freescale/xgmac_mdio.c +++ b/drivers/net/ethernet/freescale/xgmac_mdio.c @@ -19,6 +19,9 @@ #include <linux/mdio.h> #include <linux/of_platform.h> #include <linux/of_mdio.h> +#ifdef CONFIG_FMAN_V3L +#include <asm/mpc85xx.h> +#endif /* Number of microseconds to wait for a register to respond */ #define TIMEOUT 1000 @@ -180,6 +183,12 @@ static int xgmac_mdio_read(struct mii_bus *bus, int phy_id, int regnum) return ret; } +#ifdef CONFIG_FMAN_V3L + /* Fixup for RTL8211F MDIO timing delay on T1023RDB */ + if (SVR_SOC_VER(mfspr(SPRN_SVR)) == SVR_T1023) + udelay(50); +#endif + /* Initiate the read */ out_be32(®s->mdio_ctl, mdio_ctl | MDIO_CTL_READ); |