Hello
I do not have a Kinetis board to try out with this one, but with many other MCUs or CPUs I am used to you can get a detailed description of the register fields in the Registers view.
Just maximize the view and you should see the registers as bitfields. clicking on a bit in the Bit Fields will show the current value of the bit and below you will see the description of each of the fields.
In the screen dump below, I am debugging a HCS08 application. I have selected an Horizontal layout
and I can see the description of the single bits in the SPI device.

The default layout is Vertical. In order to see the single bits and their description in that layout, just maximize the Register View.
To activate the horizontal Layout
- Click on the small down arrow icon on the top of the Registers View

- Select Layout > Horizontal.
As I told you I cannot verify whether this is available this way for Kinetis as well, but it works for a bunch of other MCUs. So it might be worth a try.
CrasyCat