[FS#928] Unable to turn on Archer C7 v2 5GHz wireless

[LEDE Bugs]

A new Flyspray task has been opened.  Details are below. 

User who did this - skycrew (skycrew) 

Attached to Project - LEDE Project
Summary - Unable to turn on Archer C7 v2 5GHz wireless
Task Type - Bug Report
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Low
Priority - Very Low
Reported Version - lede-17.01
Due in Version - Undecided
Due Date - Undecided
Details - I try to configure 5ghz wireless on my archer c7 v2, unfortunately it seems unable to use the 5ghz.

I have no issue with 2.4ghz wireless.

{{http://i.imgur.com/uSquGs6.png}}

{{http://i.imgur.com/EGti4OJ.png}}

root at router:~# dmesg | grep ath10k
[   11.241081] ath10k_pci 0000:01:00.0: pci irq legacy oper_irq_mode 1 irq_mode 0 reset_mode 0
[   11.464017] ath10k_pci 0000:01:00.0: Direct firmware load for ath10k/pre-cal-pci-0000:01:00.0.bin failed with error -2
[   11.474900] ath10k_pci 0000:01:00.0: Falling back to user helper
[   11.692369] firmware ath10k!pre-cal-pci-0000:01:00.0.bin: firmware_loading_store: map pages failed
[   11.701731] ath10k_pci 0000:01:00.0: Direct firmware load for ath10k/cal-pci-0000:01:00.0.bin failed with error -2
[   11.712258] ath10k_pci 0000:01:00.0: Falling back to user helper
[   23.047311] ath10k_pci 0000:01:00.0: qca988x hw2.0 target 0x4100016c chip_id 0x043202ff sub 0000:0000
[   23.056705] ath10k_pci 0000:01:00.0: kconfig debug 0 debugfs 1 tracing 0 dfs 1 testmode 1
[   23.069779] ath10k_pci 0000:01:00.0: firmware ver 10.2.4-1.0-00016 api 5 features no-p2p,raw-mode,mfp crc32 0c5668f8
[   23.080566] ath10k_pci 0000:01:00.0: Direct firmware load for ath10k/QCA988X/hw2.0/board-2.bin failed with error -2
[   23.091168] ath10k_pci 0000:01:00.0: Falling back to user helper
[   23.182327] firmware ath10k!QCA988X!hw2.0!board-2.bin: firmware_loading_store: map pages failed
[   23.204043] ath10k_pci 0000:01:00.0: board_file api 1 bmi_id N/A crc32 bebc7c08
[   24.391201] ath10k_pci 0000:01:00.0: htt-ver 2.1 wmi-op 5 htt-op 2 cal file max-sta 128 raw 0 hwcrypto 1


root at router:~# iw list
Wiphy phy1
	max # scan SSIDs: 4
	max scan IEs length: 2257 bytes
	max # sched scan SSIDs: 0
	max # match sets: 0
	max # scan plans: 1
	max scan plan interval: -1
	max scan plan iterations: 0
	Retry short limit: 7
	Retry long limit: 4
	Coverage class: 0 (up to 0m)
	Device supports AP-side u-APSD.
	Device supports T-DLS.
	Available Antennas: TX 0x7 RX 0x7
	Configured Antennas: TX 0x7 RX 0x7
	Supported interface modes:
		 * IBSS
		 * managed
		 * AP
		 * AP/VLAN
		 * monitor
		 * mesh point
		 * P2P-client
		 * P2P-GO
		 * outside context of a BSS
	Band 1:
		Capabilities: 0x11ef
			RX LDPC
			HT20/HT40
			SM Power Save disabled
			RX HT20 SGI
			RX HT40 SGI
			TX STBC
			RX STBC 1-stream
			Max AMSDU length: 3839 bytes
			DSSS/CCK HT40
		Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
		Minimum RX AMPDU time spacing: 8 usec (0x06)
		HT TX/RX MCS rate indexes supported: 0-23
		Frequencies:
			* 2412 MHz [1] (25.0 dBm)
			* 2417 MHz [2] (25.0 dBm)
			* 2422 MHz [3] (25.0 dBm)
			* 2427 MHz [4] (25.0 dBm)
			* 2432 MHz [5] (25.0 dBm)
			* 2437 MHz [6] (25.0 dBm)
			* 2442 MHz [7] (25.0 dBm)
			* 2447 MHz [8] (25.0 dBm)
			* 2452 MHz [9] (25.0 dBm)
			* 2457 MHz [10] (25.0 dBm)
			* 2462 MHz [11] (25.0 dBm)
			* 2467 MHz [12] (disabled)
			* 2472 MHz [13] (disabled)
			* 2484 MHz [14] (disabled)
	valid interface combinations:
		 * #{ managed }