[PATCH v3 3/7] phy: phy-mtk-tphy: add property to set pre-emphasis

[AngeloGioacchino Del Regno]

Il 14/09/22 08:07, Chunfeng Yun ha scritto:
> Add a property to set usb2 phy's pre-emphasis, it's disabled by default
> on some SoCs.
> 
> Signed-off-by: Chunfeng Yun <chunfeng.yun at mediatek.com>

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>