From 69600f4156b0c36ef4d7fdc7b5e65be693ea25d1 Mon Sep 17 00:00:00 2001 From: Chunfeng Yun Date: Wed, 13 Dec 2023 14:41:33 +0800 Subject: dt-bindings: phy-mtk-tphy: add properties for phy tuning 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 --- doc/device-tree-bindings/phy/phy-mtk-tphy.txt | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'doc/device-tree-bindings') diff --git a/doc/device-tree-bindings/phy/phy-mtk-tphy.txt b/doc/device-tree-bindings/phy/phy-mtk-tphy.txt index 3042c39d09c..300e236b5b0 100644 --- a/doc/device-tree-bindings/phy/phy-mtk-tphy.txt +++ b/doc/device-tree-bindings/phy/phy-mtk-tphy.txt @@ -52,6 +52,15 @@ Optional properties (port (child) node): "da_ref": the reference clock of analog phy, used if the clocks of analog and digital phys are separated, otherwise uses "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: -- cgit v1.2.3