How to jointly start up KODI plus TV?

Hi,
I have a question concerning my TV_RPI3 configuration. I run OSMC/Kodi16 on my RPI, connected with HDMI
My TV and my RPI are connected to electricity with a switch I simply can turn on in order to start up.
However doing so will result in the TV not recognising the RPI. Plugging the HDMI out and in again does not help.
What helps is to turn off the RPI (i.e. disrupting the electricity), turning it on again. Then – and only then – will the TV recognise Kodi as a source.
I would like to have a start up process straight to KODI or at least to KODI being recognised.
Thank you!