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| author | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2014-05-09 10:47:05 +0200 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2014-05-09 11:50:14 +0200 |
| commit | d2a3e911390f9fc4d8c0ee4b3c7fc75f4fd3fd19 (patch) | |
| tree | d71aae6d706d1f3b01da5f944e247abe308feea0 /drivers/net/fm/memac_phy.c | |
| parent | 7904b70885f3c589c239f6ac978f299a6744557f (diff) | |
| parent | 173d294b94cfec10063a5be40934d6d8fb7981ce (diff) | |
| download | u-boot-imx-d2a3e911390f9fc4d8c0ee4b3c7fc75f4fd3fd19.zip u-boot-imx-d2a3e911390f9fc4d8c0ee4b3c7fc75f4fd3fd19.tar.gz u-boot-imx-d2a3e911390f9fc4d8c0ee4b3c7fc75f4fd3fd19.tar.bz2 | |
Merge branch 'u-boot/master'
Conflicts:
drivers/net/Makefile
(trivial merge)
Diffstat (limited to 'drivers/net/fm/memac_phy.c')
| -rw-r--r-- | drivers/net/fm/memac_phy.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/net/fm/memac_phy.c b/drivers/net/fm/memac_phy.c index 140e59b..2f4bc11 100644 --- a/drivers/net/fm/memac_phy.c +++ b/drivers/net/fm/memac_phy.c @@ -133,5 +133,17 @@ int fm_memac_mdio_init(bd_t *bis, struct memac_mdio_info *info) bus->priv = info->regs; + /* + * On some platforms like B4860, default value of MDIO_CLK_DIV bits + * in mdio_stat(mdio_cfg) register generates MDIO clock too high + * (much higher than 2.5MHz), violating the IEEE specs. + * On other platforms like T1040, default value of MDIO_CLK_DIV bits + * is zero, so MDIO clock is disabled. + * So, for proper functioning of MDIO, MDIO_CLK_DIV bits needs to + * be properly initialized. + */ + setbits_be32(&((struct memac_mdio_controller *)info->regs)->mdio_stat, + MDIO_STAT_CLKDIV(258)); + return mdio_register(bus); } |