Line break between \partname\thepart and \part in formatted header

Question

How can I get the formatted \part to show Part I in one line and the Name of the Part One in the other line (line break) as it shows in the \chapter without formatting?

\documentclass{report}
\usepackage{titlesec}
%For defining the style of the part
\titleclass{\part}{top}\titleformat{\part}{\centering\normalfont\Large}{\partname\hspace{2pt}\thepart\hspace{2pt}}{2pt}{}
\begin{document}
\part{Name of the Part One}
\chapter{Name of the Chapter One}
\section{Section One}
Some text!
\section{Section Two}
Some text!
\end{document}

Answer 1

I don´t know if it´s exactly what you want but you can use \titleformat{\part}{display} to set the label to another line.

You can reproduce the formatting of part as chapter with the code below and change the formatting setting for the partname. The last parameter is the formatting for the title of the part.

\documentclass{report}
\usepackage{titlesec}
%For defining the style of the part
%\titleclass{\part}{top}\titleformat{\part}{\centering\normalfont\Large}{\partname\hspace{2pt} \thepart\hspace{2pt}}{2pt}{}

%part formatted same as chapter    
\titleformat{\part}[display]{\normalfont\huge\bfseries}{\partname\ \thepart} % partname formatting
{20pt} % vertical space
{\Huge} %part title formatting

\begin{document}
\part{Name of the Part One}
\chapter{Name of the Chapter One}
\section{Section One}
Some text!
\section{Section Two}
Some text!
\end{document}

and you get: