1What:           /sys/devices/uncore_iio_x/dieX
2Date:           February 2020
3Contact:        Roman Sudarikov <roman.sudarikov@linux.intel.com>
4Description:
5                Each IIO stack (PCIe root port) has its own IIO PMON block, so
6                each dieX file (where X is die number) holds "Segment:Root Bus"
7                for PCIe root port, which can be monitored by that IIO PMON
8                block.
9                For example, on 4-die Xeon platform with up to 6 IIO stacks per
10                die and, therefore, 6 IIO PMON blocks per die, the mapping of
11                IIO PMON block 0 exposes as the following::
12
13		    $ ls /sys/devices/uncore_iio_0/die*
14		    -r--r--r-- /sys/devices/uncore_iio_0/die0
15		    -r--r--r-- /sys/devices/uncore_iio_0/die1
16		    -r--r--r-- /sys/devices/uncore_iio_0/die2
17		    -r--r--r-- /sys/devices/uncore_iio_0/die3
18
19		    $ tail /sys/devices/uncore_iio_0/die*
20		    ==> /sys/devices/uncore_iio_0/die0 <==
21		    0000:00
22		    ==> /sys/devices/uncore_iio_0/die1 <==
23		    0000:40
24		    ==> /sys/devices/uncore_iio_0/die2 <==
25		    0000:80
26		    ==> /sys/devices/uncore_iio_0/die3 <==
27		    0000:c0
28
29                Which means::
30
31		    IIO PMU 0 on die 0 belongs to PCI RP on bus 0x00, domain 0x0000
32		    IIO PMU 0 on die 1 belongs to PCI RP on bus 0x40, domain 0x0000
33		    IIO PMU 0 on die 2 belongs to PCI RP on bus 0x80, domain 0x0000
34		    IIO PMU 0 on die 3 belongs to PCI RP on bus 0xc0, domain 0x0000
35