This uses ISO3166 country code and 0 rev on brcmfmac43602 chips.
Without this patch 80 MHz width is not selected on 5 GHz channels.

Commit a21bf90e927f ("brcmfmac: use ISO3166 country code and 0 rev as
fallback on some devices") provides a way to specify chips for using the
fallback case.

Before commit 151a7c12c4fc ("Revert "brcmfmac: use ISO3166 country code
and 0 rev as fallback"") brcmfmac43602 devices works correctly and for
this specific case 80 MHz width is selected.

Signed-off-by: Hamid Zamani <hzamani.cs91@gmail.com>
---
 drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
index f0ad1e23f3c8..360b103fe898 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
@@ -7481,6 +7481,7 @@ static bool brmcf_use_iso3166_ccode_fallback(struct brcmf_pub *drvr)
 {
 	switch (drvr->bus_if->chip) {
 	case BRCM_CC_4345_CHIP_ID:
+	case BRCM_CC_43602_CHIP_ID:
 		return true;
 	default:
 		return false;
-- 
2.35.1

Hamid Zamani <hzamani.cs91@gmail.com> wrote:

> This uses ISO3166 country code and 0 rev on brcmfmac43602 chips.
> Without this patch 80 MHz width is not selected on 5 GHz channels.
> 
> Commit a21bf90e927f ("brcmfmac: use ISO3166 country code and 0 rev as
> fallback on some devices") provides a way to specify chips for using the
> fallback case.
> 
> Before commit 151a7c12c4fc ("Revert "brcmfmac: use ISO3166 country code
> and 0 rev as fallback"") brcmfmac43602 devices works correctly and for
> this specific case 80 MHz width is selected.
> 
> Signed-off-by: Hamid Zamani <hzamani.cs91@gmail.com>

Patch applied to wireless-next.git, thanks.

21947f3a74d6 brcmfmac: use ISO3166 country code and 0 rev as fallback on brcmfmac43602 chips

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20220423111237.60892-1-hzamani.cs91@gmail.com/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches