6 comments:
File src/mainboard/acer/aspire_vn7_572g/devicetree.cb:
I found an ATA error in dmesg once, even with the vendor BIOS. […]
Ack. I wonder if the issue with the Purism Librem is due to lack of HSIO tuning or just bad design. There are HSIO tuning registers but they are publicly undocumented.
In the schematics, ports 1-4 are connected to PEG. […]
No, they should be left disabled. There's a difference between PCIe root port devices and PCIe lanes. The dGPU is using four PCIe lanes (1..4), but they are all grouped together in a single PCIe root port device.
Patch Set #62, Line 202: register "usb2_ports[4]" = "USB2_PORT_FLEX(OC_SKIP)" # Bluetooth
Device does not have a touchscreen.
Not at all, or not on your model? Leaving it enabled does not cause any harm.
Patch Set #62, Line 204: register "usb2_ports[7]" = "USB2_PORT_FLEX(OC_SKIP)" # SD
Not present.
See above
Patch Set #62, Line 208: # register "usb3_ports[2]" = "USB3_PORT_DEFAULT(OC_SKIP)" # Type-C Port
There's only one Type-C port?
USB Type-C uses two USB 3.0 lanes, though. Yes, I didn't know about that either.
Patch Set #62, Line 240: device pci 01.0 on end # Dedicated Graphics Device
You're right. Volume 2 of the datasheet for 6th gen platforms concurs. […]
Notice that, on line 371, coreboot says it could not find this device. That is, Bus:Dev.Fun 00:01.0 is missing. The GPU should be on a different bus, at 01:00.0
If the dGPU isn't present with coreboot, it is probably power gated because of Optimus.
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