via_regs_dump - tool for debugging the OpenChrome display driver

       via-chrome-tool (C) 2009 by VIA Technologies, Inc.  This is FREE SOFTWARE with ABSOLUTELY NO WARRANTY

                                                 September 2017                                 VIA_REGS_DUMP(8)

       The  OpenChrome  project is committed to providing and supporting fully free and Open Source drivers that
       take full advantage of the hardware acceleration of VIA chipsets featuring the VIA  UniChrome,  UniChrome
       Pro and Chrome9 integrated graphics processors.

       via_regs_dump - tool for debugging the OpenChrome display driver

-h, --help
              Display this usage message.

       -d, --dump
              Dump all registers.

       -p, --pll
              Display PLL.

       -m, --mode
              Display modes.

       -r, --read
              Read register. Example : $0 -r 3d5.17

       -w, --write
              Write register. Example : $0 -w 3d5.17 0xa3

       -g, --gpio
              Display GPIO state.

https://www.freedesktop.org/wiki/Openchrome/

via_regs_dump [options]