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| 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 | 2b7dfdc5ef94138f470a25b7c83de1cd94768321 (patch) | |
| tree | ea68de68f960f60a26b64b058b8f02e9e910ee93 /target/linux/ar71xx | |
| parent | 05fbd33f9f1bf3d1f53a11269e2f907a14b5d9bd (diff) | |
| download | upstream-2b7dfdc5ef94138f470a25b7c83de1cd94768321.tar.gz upstream-2b7dfdc5ef94138f470a25b7c83de1cd94768321.tar.bz2 upstream-2b7dfdc5ef94138f470a25b7c83de1cd94768321.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.
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@28422 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/ar71xx')
| -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); |