Balázs Vinarz has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/30987 )
Change subject: mb/asus: Add Asus A88XM-E FM2+ with documentation ......................................................................
Patch Set 52:
(3 comments)
Comments added
https://review.coreboot.org/c/coreboot/+/30987/38/src/mainboard/asus/a88xm-e... File src/mainboard/asus/a88xm-e/Kconfig:
https://review.coreboot.org/c/coreboot/+/30987/38/src/mainboard/asus/a88xm-e... PS38, Line 39: default BOARD_ASUS_A88XM_E_DDR3_VOLT_150
Balazs, should we just remove these voltage options?
Great question, I've lost in the last few commits, but I checked it back in the F2A series a dedicated chip was able to change the voltage, while here nothing has really happen. I would say, yes let's remove them.
https://review.coreboot.org/c/coreboot/+/30987/47/src/mainboard/asus/a88xm-e... File src/mainboard/asus/a88xm-e/Kconfig:
https://review.coreboot.org/c/coreboot/+/30987/47/src/mainboard/asus/a88xm-e... PS47, Line 55: config BOARD_ASUS_A88XM_E_DDR3_VOLT_VAL
Balazs, should we just remove these voltage options?
Last time I checked the voltage was stick to 1,35 Volts. Let's remove these options.
https://review.coreboot.org/c/coreboot/+/30987/38/src/mainboard/asus/a88xm-e... File src/mainboard/asus/a88xm-e/OemCustomize.c:
https://review.coreboot.org/c/coreboot/+/30987/38/src/mainboard/asus/a88xm-e... PS38, Line 104: * Untested: HDMI
Could this commit clarify? https://github. […]
In this case AMD is driving the D-Sub(VGA) contoller trough the FCH, while the two DP outputs are mapped to DVI and HDMI. This is why the high-end grandpa board (F2A85-V) as a dedicated ASM1445 to manage 3 digital outputs (DP, DVI and HDMI) and let to use only two of them because of HW limitations. (refer to page 60 at https://dlcdnets.asus.com/pub/ASUS/mb/SocketFM2/F2A85-V_PRO/E8021_F2A85-V_PR...) HDMI/DVI ports has an option to select the audio channels. (refer to: page 81) AMD used to use DP outputs in the newer boards as well, for example my B450M-A has only DP outputs from the NB and on of them has a Realtek DP-VGA converter, while the output is still called to DisplayPort-0 on xrandr.