Djam/u-boot
1
0
Fork 0
mirror of https://github.com/u-boot/u-boot.git synced 2025-04-23 22:14:54 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

dt-bindings: phy-mtk-tphy: add properties for phy tuning

Browse source 
Add properties to improve eye diagram which sometimes need adjust
some parameters of u2phy;
Add a property to tune disconnect threshold;

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
This commit is contained in:
Chunfeng Yun 2023-12-13 14:41:33 +08:00 • committed by Tom Rini
parent 2ee7a8ec6f
commit 69600f4156
1 changed files with 9 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
doc/device-tree-bindings/phy/phy-mtk-tphy.txt
View file

@ -52,6 +52,15 @@ Optional properties (port (child) node):
"da_ref": the reference clock of analog phy, used if the clocks "da_ref": the reference clock of analog phy, used if the clocks
of analog and digital phys are separated, otherwise uses of analog and digital phys are separated, otherwise uses
"ref" clock only if needed. "ref" clock only if needed.
- mediatek,eye-vrt : The selection of VRT reference voltage (U2 phy),
the value is [1, 7]
- mediatek,eye-term : The selection of HS_TX TERM reference voltage (U2 phy),
the value is [1, 7]
- mediatek,discth : The selection of disconnect threshold (U2 phy),
the value is [1, 15]
- mediatek,pre-emphasis : The level of pre-emphasis which used to widen
the eye opening and boost eye swing,
the value is [1, 3]
Example: Example: