** Changed in: linux-oem-6.5 (Ubuntu Jammy)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/2043964
Title:
New China SRRC compliance readiness check for Realtek WLAN
Status in HWE Next:
New
Status in linux package in Ubuntu:
In Progress
Status in linux-oem-6.5 package in Ubuntu:
Invalid
Status in linux source package in Jammy:
Won't Fix
Status in linux-oem-6.5 source package in Jammy:
Fix Committed
Status in linux source package in Noble:
In Progress
Status in linux-oem-6.5 source package in Noble:
Invalid
Bug description:
[SRU Justification]
BugLink: https://bugs.launchpad.net/bugs/2043964
[Impact]
SRRC (State Radio Regulation of China) compliance readiness check for
Realtek WLAN.
[Fix]
Capability for Realtek WiFi TX power tables load and report from RFE
(RF front end) parameters is needed. Multiple commits from vanilla
kernel.
[Test Case]
```
$ sudo iw reg set CN
# manually connect to 5G ap : center channel 155 bw 80 M
$ sudo cat /sys/kernel/debug/ieee80211/phy0/rtw89/txpwr_table | grep -E
'MCS_2TX_80M_0|Regulatory'
```
The expected output s
```
Regulatory: CN
MCS_2TX_80M_0 - NON_BF BF | 10, 9, dbm
```
And verification fail output:
```
Regulatory: CN
MCS_2TX_80M_0 - NON_BF BF | 15, 10, dbm
```
[Where problems could occur]
This updates the behaviors and constraints of radio device power
transmission for rtw89 driver, and must be done for regulatory
compliance.
[Other Info]
As needed for oem-6.5/jammy, nominate only for Noble and
oem-6.5/jammy.
========== original bug report ==========
New China SRRC compliance readiness check
Proposed Change:
- China SRRC updates the testing requirement for 2.4/5GHz, the major changes
are the in-band RSE limit, and EIRP limits.
- The SRRC updates impact both WLAN modules and platforms. The WLAN
modules need to complete the new SRRC testing then platform can start
to apply / renew the new SRRC cert. If platform took several WLAN
modules but not all of the modules have completed the new SRRC testing
updates, platform cannot renew/apply the new SRRC cert.
- The platforms which apply/renew SRRC new standards need to ensure
the TX power can meet the new RSE/EIRP limits.
IHV confirmed below driver version can support these requirements.
Realtek:
The upstream driver can support SRRC compliance.
https://lore.kernel.org/linux-wireless/[email protected]/T/#m4d8acb2697ff2bc07485a6119839e1f96a822340
[lore.kernel.org]
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