https://bugs.freedesktop.org/show_bug.cgi?id=37922
--- Comment #24 from [email protected] 2011-08-27 19:39:31 PDT --- 1099/1588/1590 information as requested: register 1098: 0x21ca0004 - default 0x21ca0034 - set by blob 0xf9fe007e - writeable bits 0x00000020 - enable automatic clock gating for register 0x1588 0x00000040 - enable automatic clock gating for register 0x1590 register 1588/1590: * registers consists of 2bit subregisters (or 4bit subregisters maybe???): 0x00 - nothing 0x01 - automatic clock gating, doesn't affect engine usability (tested on PGRAPH only). see register 0x1098 0x02 - nothing/reserved - tested this in all combinations 0x03 - disable clock - stops the engine - slightly larger power saving that 0x01, but difference small 1588 subregisters: 0x00000003 - PGRAPH - (or part of it). 0x00000030 - VPE - no power savings at all. 1590 subregisters: 0x00003000 - some VP2 engine 0x00000300 - some another VP2 engine 0x00000c00 - supposed to be also VP2 related - no reaction also note that writing 0x8000 to this register while 1098 bit 0x40 set harms power usage -- Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. _______________________________________________ Nouveau mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/nouveau
