Hi,

I have some small question regarding the debugging functionality introduced by 
commit bc64d05220f3 ("ath10k: debugfs support to get final TPC stats for 10.4 
variants") [1] and commit 295426669cd6 ("ath10k: implement debugfs interface 
for Transmit Power Control stats") [2]. Goal of this is to find out whether 
the VHT160 MHz CTLs are correctly applied.


160MHz support
==============

I have an QCA9888 which supports 160MHz (mode 15). But the VHT160 entries are 
not shown in the results by tpc_stats(_final). I have also no idea whether 
this is actually reported by the firmware. What is the state here?


Validity of Output
==================

And are you sure that it is reported correctly for the rest of the rates? I 
have for example now configured channel 36 VHT80 (US) with firmware 
10.4-3.6-00140 on an QCA4019 device (A42 when you require details). I would 
have expected values similar to "per chain txpower" (*2) in the attached 
a42.txt. Both tpc_stats and tpc_stats_final give me the same output. But 
instead of seeing a flat 14.5 (*2) for VHT80, the per chain twicepower jumps
around a lot.

It even looks like the tables only contains copies of the same VHT values (but 
different between CDD and STBC)  and not specific ones for VHT20/VHT40/VHT80.

See the CTLs and targetpowers as reference. The BDFs can be extracted from the 
QCA4019 board-2.bin [3] (bus=ahb,bmi-chip-id=0,bmi-board-id=17,variant=OM-A42)
using Kalle's ath10k-bdencoder [4]. 


Misc
====

* What is "HTCUP"?
* When tpc_value1 is for chain1, how to you get to this when the CTL contains 
  data with following bitmaps:

  - TX 0xe NSS 0xf
  - TX 0x1 NSS 0x1
  - TX 0xe NSS 0x2

  Is only the first entry used for the first chain when two streams will be 
  transmitted?


Kind regards,
	Sven


[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bc64d05220f3e34cf432a166b83c8fff14cd7a3d
[2] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=295426669cd68efc84657e6ee426499cfb54346e
[3] https://github.com/kvalo/ath10k-firmware/blob/master/QCA4019/hw1.0/board-2.bin
[4] https://github.com/qca/qca-swiss-army-knife/blob/master/tools/scripts/ath10k/ath10k-bdencoder