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| author | Michael Brown | 2021-06-22 15:48:10 +0200 |
|---|---|---|
| committer | Michael Brown | 2021-06-24 13:36:46 +0200 |
| commit | 5622575c5e4bffb07307f39903bb95caad7d172d (patch) | |
| tree | 3bb74d96b17d6807ecfe4cdd8298fdf3a1149c20 /src/interface/linux/linux_api.c | |
| parent | [cloud] Show ifstat output after a failed boot attempt (diff) | |
| download | ipxe-5622575c5e4bffb07307f39903bb95caad7d172d.tar.gz ipxe-5622575c5e4bffb07307f39903bb95caad7d172d.tar.xz ipxe-5622575c5e4bffb07307f39903bb95caad7d172d.zip | |
[realtek] Work around hardware bug on RTL8211B
The RTL8211B seems to have a bug that prevents the link from coming up
unless the MII_MMD_DATA register is cleared.
The Linux kernel driver applies this workaround (in rtl8211b_resume())
only to the specific RTL8211B PHY model, along with a matching
workaround to set bit 9 of MII_MMD_DATA when suspending the PHY.
Since we have no need to ever suspend the PHY, and since writing a
zero ought to be harmless, we just clear the register unconditionally.
Debugged-by: Nikolay Pertsev <nikolay.p@cos.flag.org>
Tested-by: Nikolay Pertsev <nikolay.p@cos.flag.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/interface/linux/linux_api.c')
0 files changed, 0 insertions, 0 deletions