How to adjustbox trim logo in preamble?

Question

I have an official logo, which has white background and much margins around. So the logo does not look good without trimming at the top-left corner of Berkley theme in Beamer. Code

\documentclass{beamer}

\usepackage{graphics}
\usepackage{adjustbox}

\usetheme{Berkeley} 
\logo{
% llx lly urx ury
\adjustbox{trim=0.2\width{} 0.1\height{} 0.2\width{} 0.1\height{}, clip, height=1.2\textheight{}}{
\includegraphics[height=1cm]{logo.png}
}
}

\begin{document}
\begin{frame}
\begin{titlepage}
Leo Leopold Hertz. 
\end{titlepage}
\end{frame}
\end{document}

Fig. 1 Logo example, Fig. 2 Output of the code

Testing samcarter's answer with random image

I try to auto-adjust width and height of the image but I cannot get it to work

% http://tex.stackexchange.com/a/215317/13173
\includegraphics[trim=5.3cm 0.2cm 5cm 1.2cm,clip, width=\beamer@sidebarwidth,height=\beamer@headheight]{logo.p‌​ng}

Final proposal which works

\includegraphics[trim=5.3cm 0.2cm 5cm 1.2cm,clip, height=\headheight, width=\headheight]{logo.p‌​ng}

OS: Debian 8.5
TeXLive: 2016

Answer 1

I still have no idea, what your intended output should look like, so this is just a guess:

\documentclass{beamer}

\usetheme{Berkeley} 

\logo{%
    \includegraphics[trim=5.3cm 0.2cm 5cm 1.2cm, clip, height=\headheight]{logo.png}%
}

\begin{document}
\begin{frame}
\begin{titlepage}
Leo Leopold Hertz. 
\end{titlepage}
\end{frame}
\end{document}