phy: phy-mtk-tphy: make the ref clock optional
authorChunfeng Yun <chunfeng.yun@mediatek.com>
Tue, 11 Feb 2020 03:21:13 +0000 (11:21 +0800)
committerKishon Vijay Abraham I <kishon@ti.com>
Fri, 20 Mar 2020 14:04:29 +0000 (19:34 +0530)
commit657a9edec0757cc6841672fda8065b2338c6b073
tree01a6fb34cf07770b57a57300cca868d1fd17d16a
parent410572ec08f138502ecd9731ec60c455819f1a0f
phy: phy-mtk-tphy: make the ref clock optional

Sometimes the reference clock of USB3 PHY comes from oscillator
directly, and no need refer to a fixed-clock in DTS anymore
if make it optional.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
drivers/phy/mediatek/phy-mtk-tphy.c