Return-path: Received: from mail-ua0-f182.google.com ([209.85.217.182]:33792 "EHLO mail-ua0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751189AbdDHFM6 (ORCPT ); Sat, 8 Apr 2017 01:12:58 -0400 MIME-Version: 1.0 In-Reply-To: <20170322194240.1488-1-nbd@nbd.name> References: <20170322194240.1488-1-nbd@nbd.name> From: Weedy Date: Sat, 8 Apr 2017 01:12:37 -0400 Message-ID: (sfid-20170408_071303_533849_E3783C4A) Subject: Re: [PATCH] ath9k_hw: fix channel maximum power level test To: Felix Fietkau Cc: linux-wireless@vger.kernel.org, kvalo@codeaurora.org, stable@vger.kernel.org Content-Type: text/plain; charset=UTF-8 Sender: linux-wireless-owner@vger.kernel.org List-ID: On 22 March 2017 at 15:42, Felix Fietkau wrote: > The tx power applied by set_txpower is limited by the CTL (conformance > test limit) entries in the EEPROM. These can change based on the user > configured regulatory domain. > Depending on the EEPROM data this can cause the tx power to become too > limited, if the original regdomain CTLs impose lowr limits than the CTLs > of the user configured regdomain. When merged, should this this fix this annoyance? Or is TP-Link just shipping junk cal data? root@LEDE:~# iw phy Wiphy phy1 ... Frequencies: * 5180 MHz [36] (21.0 dBm) * 5200 MHz [40] (21.0 dBm) * 5220 MHz [44] (21.0 dBm) * 5240 MHz [48] (21.0 dBm) * 5260 MHz [52] (21.0 dBm) (radar detection) * 5280 MHz [56] (21.0 dBm) (radar detection) * 5300 MHz [60] (21.0 dBm) (radar detection) * 5320 MHz [64] (21.0 dBm) (radar detection) * 5500 MHz [100] (21.0 dBm) (radar detection) * 5520 MHz [104] (21.0 dBm) (radar detection) * 5540 MHz [108] (21.0 dBm) (radar detection) * 5560 MHz [112] (21.0 dBm) (radar detection) * 5580 MHz [116] (21.0 dBm) (radar detection) * 5600 MHz [120] (disabled) * 5620 MHz [124] (disabled) * 5640 MHz [128] (disabled) * 5660 MHz [132] (21.0 dBm) (radar detection) * 5680 MHz [136] (21.0 dBm) (radar detection) * 5700 MHz [140] (21.0 dBm) (radar detection) * 5745 MHz [149] (21.0 dBm) * 5765 MHz [153] (21.0 dBm) * 5785 MHz [157] (21.0 dBm) * 5805 MHz [161] (21.0 dBm) * 5825 MHz [165] (21.0 dBm) root@LEDE:~# iw reg get global country CA: DFS-FCC (2402 - 2472 @ 40), (N/A, 30), (N/A) (5150 - 5250 @ 80), (N/A, 23), (N/A), AUTO-BW (5250 - 5350 @ 80), (N/A, 24), (0 ms), DFS, AUTO-BW (5470 - 5600 @ 80), (N/A, 24), (0 ms), DFS (5650 - 5730 @ 80), (N/A, 24), (0 ms), DFS (5735 - 5835 @ 80), (N/A, 30), (N/A) phy#1 country US: DFS-FCC (2402 - 2472 @ 40), (N/A, 30), (N/A) (5170 - 5250 @ 80), (N/A, 23), (N/A), AUTO-BW (5250 - 5330 @ 80), (N/A, 23), (0 ms), DFS, AUTO-BW (5490 - 5730 @ 160), (N/A, 23), (0 ms), DFS (5735 - 5835 @ 80), (N/A, 30), (N/A) (57240 - 63720 @ 2160), (N/A, 40), (N/A) root@LEDE:~# iw phy phy1 set txpower fixed 1500 root@LEDE:~# iwinfo wlan1 ESSID: nah Access Point: still nah Mode: Master Channel: 48 (5.240 GHz) Tx-Power: 15 dBm Link Quality: 44/70 Signal: -66 dBm Noise: -90 dBm Bit Rate: 147.5 MBit/s Encryption: WPA2 PSK (CCMP) Type: nl80211 HW Mode(s): 802.11an Hardware: 168C:0033 168C:A120 [Atheros AR9580] TX power offset: none Frequency offset: none Supports VAPs: yes PHY name: phy1 root@LEDE:~# iw phy phy1 set txpower fixed 2000 root@LEDE:~# iwinfo wlan1 ESSID: nah Access Point: still nah Mode: Master Channel: 48 (5.240 GHz) Tx-Power: 17 dBm Link Quality: 45/70 Signal: -65 dBm Noise: -90 dBm Bit Rate: 177.5 MBit/s Encryption: WPA2 PSK (CCMP) Type: nl80211 HW Mode(s): 802.11an Hardware: 168C:0033 168C:A120 [Atheros AR9580] TX power offset: none Frequency offset: none Supports VAPs: yes PHY name: phy1