In parsing out the ODMDATA value that is in the conf file there seems to be some disagreement in the documentation and also in parsing the value out itself:
The value in p2972-0000.conf.common is
If I parse this out based on the info in the adaptation guide:
# Bits 31:27 control HSIO-PCIE-XBAR configurations for controllers 4-0 (where is controller 5?) # Bits 24:23 control UFS configurations # Bit 22 controls SATA # # # 2822 breakdown of settings # 0x919 --> 0b10010 || 0b11 || 0b0 # pcie-xbar-8-0-1-0-2 --> C5 = 8 lanes, C4 = 0 lanes, C3 = 1 lane, C1 = 0 lanes, C0 = 2 lanes? # This doesnt align with the P2822 design...C0 should be 4 lanes for the M.2 Key M # UFS config = Enabled, L10 and L11 # This algins with the 2822 design, L10 is for the UFS card, and L11 is for eSATA # SATA = disabled, this must be different from the eSATA controller.
There are only 5 bits, but there are 6 controllers - where is the other controller configured? And is it C5 or C0 that is not part of this? The documentation says that this sets the config for controllers 4-0, but that doesnt align with the parsed bits…
The xbar would seem to suggest that it starts with C5, as that is a x8 that is used for the PCIe x16 slot, but then you have to omit C2, and there is no x4 value for the NVMe SSD on C0 anywhere.
I also do not see an 8-0-1-0-4 which is what I would expect based on the way this is documented in the guide.
x8 for C5, x1 for C3 and x4 for C0
According to the guide however, the ‘expected’ value is 0x8190000 - which doesnt make any sense at all for the configuration of the carrier.