Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) =============
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) What is gxfb?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) =============
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) .. [This file is cloned from VesaFB/aty128fb]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) This is a graphics framebuffer driver for AMD Geode GX2 based processors.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) Advantages:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)  * No need to use AMD's VSA code (or other VESA emulation layer) in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)    BIOS.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)  * It provides a nice large console (128 cols + 48 lines with 1024x768)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)    without using tiny, unreadable fonts.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)  * You can run XF68_FBDev on top of /dev/fb0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)  * Most important: boot logo :-)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) Disadvantages:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)  * graphic mode is slower than text mode...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) How to use it?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) ==============
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) Switching modes is done using  gxfb.mode_option=<resolution>... boot
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) parameter or using `fbset` program.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) See Documentation/fb/modedb.rst for more information on modedb
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) resolutions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) X11
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) ===
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) XF68_FBDev should generally work fine, but it is non-accelerated.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) Configuration
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) =============
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) You can pass kernel command line options to gxfb with gxfb.<option>.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) For example, gxfb.mode_option=800x600@75.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) Accepted options:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) ================ ==================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) mode_option	 specify the video mode.  Of the form
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 		 <x>x<y>[-<bpp>][@<refresh>]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) vram		 size of video ram (normally auto-detected)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) vt_switch	 enable vt switching during suspend/resume.  The vt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 		 switch is slow, but harmless.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) ================ ==================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) Andres Salomon <dilinger@debian.org>