Hi Yen, Friendly reminder of this topic. We have the same problem with RZ608 and RZ616: All 6GHz channels are disabled by mt7921_regd_channel_update(). Is there anything I can do to help? Regards, Georg Am 12.02.25 um 03:18 schrieb Mingyen Hsieh (謝明諺): > Hi Slavi, > > Thank you for reporting this issue. > I will look into what went wrong. > > Best Regards, > Yen. > > -----Original Message----- > From: Slavi Pantaleev <slavi@xxxxxxxxxxx> > Sent: Monday, February 10, 2025 10:56 PM > To: Felix Fietkau <nbd@xxxxxxxx>; Lorenzo Bianconi <lorenzo@xxxxxxxxxx>; Ryder Lee <Ryder.Lee@xxxxxxxxxxxx>; Kalle Valo <kvalo@xxxxxxxxxx>; Matthias Brugger <matthias.bgg@xxxxxxxxx>; AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>; Mingyen Hsieh (謝明諺) <Mingyen.Hsieh@xxxxxxxxxxxx>; Deren Wu (武德仁) <Deren.Wu@xxxxxxxxxxxx>; linux-wireless@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; linux-mediatek@xxxxxxxxxxxxxxxxxxx > Subject: 6 Ghz frequencies always listed as disabled in newer kernels with Mediatek MT7921K (RZ608) > > > External email : Please do not click links or open attachments until you have verified the sender or the content. > > > Hello! > > This is in regard to Bugzilla Bug 218731 - Tri-band AMD RZ608 (MediaTek > MT7921K) has 6GHz band disabled in kernel 6.7+ despite working in <=6.6 > > URL: https://urldefense.com/v3/__https://bugzilla.kernel.org/show_bug.cgi?id=218731__;!!CTRNKA9wMg0ARbw!hwgyrPE5EUmlhv276MLdhh3io-OmXeYvNMVGUpAUbJ7wgc9z8WI4fZoD0Ze1WlIlqf_1qrieE1unap_P8_E$ > > I'm in Bulgaria and `iw reg get` reports this: > > ``` > global > country BG: DFS-ETSI > (2400 - 2483 @ 40), (N/A, 20), (N/A) > (5150 - 5250 @ 80), (N/A, 23), (N/A), NO-OUTDOOR, AUTO-BW > (5250 - 5350 @ 80), (N/A, 20), (0 ms), NO-OUTDOOR, DFS, AUTO-BW > (5470 - 5725 @ 160), (N/A, 26), (0 ms), DFS > (5725 - 5875 @ 80), (N/A, 13), (N/A) > (5945 - 6425 @ 160), (N/A, 23), (N/A), NO-OUTDOOR > (57000 - 66000 @ 2160), (N/A, 40), (N/A) ``` > > For testing purposes, I've also tried switching to another regulatory domain (`US`, `DE`, `SE`, `NL`) via `iw reg set ..`. > > Regardless of the regulatory domain, `iw list | grep -A 15 Frequencies` always reports the 6 Ghz frequencies as disabled on newer kernels. > > As the original bug reporter has discovered, the regression begins to appear in kernel 6.7.0 while it isn't present in 6.6.30. > I've done a bisection and the results are like this: > > 1. [bad] mainline (954a209f431c06b62718a49b403bd4c549f0d6fb) > 2. [good] v6.6.30 > 3. [bad] v6.7.12 > 4. [good] v6.6 > 5. [bad] edd8e84ae9514e93368f56c3715b11af52df6c3b > 6. [bad] 89ed67ef126c4160349c1b96fdb775ea6170ac90 > 7. [good] b827ac419721a106ae2fccaa40576b0594edad92 > 8. [bad] d1a02ed66fe62aa2edd77bd54e270ebc33bd12ff > 9. [good] 3abbd0699b678fc48e0100704338cff9180fe4bb > 10. [good] 5a423552e0d9bb882f22cb0bf85f520ca2692706 > 11. [bad] 56a7bb12c78ffa1b02e154b1d779ed2a1555fa3c > 12. [good] a3c2dd96487f1dd734c9443a3472c8dafa689813 > 13. [bad] 089482a06b74a40d45773b1871182e8f04be026b > 14. [good] fce9c967820a72f600abbf061d7077861685a14d > 15. [good] c948b5da6bbec742b433138e3e3f9537a85af2e5 > 16. [good] 9585316a2aaf773a67846bdc8bbdd4df1e9622fa > 17. [good] 51ba0e3a15eb1643116a93674e230e11b9499592 > 18. [bad] 09382d8f8641bc12fffc41a93eb9b37be0e653c0 > 19. [good] 4fc8df50fd41c2762d893211487be0ecb24c6a05 > > 09382d8f8641bc12fffc41a93eb9b37be0e653c0 is reported as the first bad commit. > > URL: > https://urldefense.com/v3/__https://kernel.googlesource.com/pub/scm/linux/kernel/git/stable/linux/*/09382d8f8641bc12fffc41a93eb9b37be0e653c0__;Kw!!CTRNKA9wMg0ARbw!hwgyrPE5EUmlhv276MLdhh3io-OmXeYvNMVGUpAUbJ7wgc9z8WI4fZoD0Ze1WlIlqf_1qrieE1unR0MDLCs$ > > Regards >
