diff options
| author | Jonas Gorski <jogo@openwrt.org> | 2011-10-11 23:05:13 +0000 |
|---|---|---|
| committer | Jonas Gorski <jogo@openwrt.org> | 2011-10-11 23:05:13 +0000 |
| commit | 03f91068d10bb74c2d292b2245fdf41c987eefdf (patch) | |
| tree | 6b2ed4ae7b02786ea4565e0f89f153c9ab25d047 /target/linux/ar71xx/patches-2.6.39 | |
| parent | b7a2a748239f692fe899afac2adc9d7801279ac1 (diff) | |
| download | upstream-03f91068d10bb74c2d292b2245fdf41c987eefdf.tar.gz upstream-03f91068d10bb74c2d292b2245fdf41c987eefdf.tar.bz2 upstream-03f91068d10bb74c2d292b2245fdf41c987eefdf.zip | |
ar71xx: add a workaround for ar8316 not always driving the TA bit to low
AR8316 behind a GPIO bitbanged MDIO bus fails to drive the turnaround bit
to low despite returning a valid value. Ignore it and just use the
returned value anyway.
SVN-Revision: 28422
Diffstat (limited to 'target/linux/ar71xx/patches-2.6.39')
| -rw-r--r-- | target/linux/ar71xx/patches-2.6.39/920-mdio_bitbang_ignore_ta_value.patch | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/target/linux/ar71xx/patches-2.6.39/920-mdio_bitbang_ignore_ta_value.patch b/target/linux/ar71xx/patches-2.6.39/920-mdio_bitbang_ignore_ta_value.patch new file mode 100644 index 0000000000..39584aabfa --- /dev/null +++ b/target/linux/ar71xx/patches-2.6.39/920-mdio_bitbang_ignore_ta_value.patch @@ -0,0 +1,20 @@ +--- a/drivers/net/phy/mdio-bitbang.c ++++ b/drivers/net/phy/mdio-bitbang.c +@@ -165,16 +165,7 @@ static int mdiobb_read(struct mii_bus *b + + ctrl->ops->set_mdio_dir(ctrl, 0); + +- /* check the turnaround bit: the PHY should be driving it to zero */ +- if (mdiobb_get_bit(ctrl) != 0) { +- /* PHY didn't drive TA low -- flush any bits it +- * may be trying to send. +- */ +- for (i = 0; i < 32; i++) +- mdiobb_get_bit(ctrl); +- +- return 0xffff; +- } ++ mdiobb_get_bit(ctrl); + + ret = mdiobb_get_num(ctrl, 16); + mdiobb_get_bit(ctrl); |