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wifi: rtw89: 8852cu: add quirk to disable 2.4 GHz band

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Add RTW89_QUIRK_DISABLE_2GHZ to the rtw89_quirks enum to allow
per-device suppression of the 2.4 GHz band.

Apply the quirk only for the 0x28de:0x2432 (VID:PID) USB device,
which operates only in 5/6 GHz bands.

Signed-off-by: David Lee <sc.lee@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20260717061910.54466-4-pkshih@realtek.com
This commit is contained in:
David Lee
2026-07-17 14:19:04 +08:00
committed by Ping-Ke Shih
parent 721d90c850
commit 355626a2c2
3 changed files with 6 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/net/wireless/realtek/rtw89/core.c
View File

@@ -6418,6 +6418,9 @@ static int rtw89_core_set_supported_band(struct rtw89_dev *rtwdev)
u8 support_bands = rtwdev->chip->support_bands;
int ret;
if (test_bit(RTW89_QUIRK_DISABLE_2GHZ, rtwdev->quirks))
support_bands &= ~BIT(NL80211_BAND_2GHZ);
if (support_bands & BIT(NL80211_BAND_2GHZ)) {
sband = rtw89_core_sband_dup(rtwdev, &rtw89_sband_2ghz);
if (!sband)

1
drivers/net/wireless/realtek/rtw89/core.h
View File

@@ -6057,6 +6057,7 @@ enum rtw89_quirks {
RTW89_QUIRK_THERMAL_PROT_120C,
RTW89_QUIRK_THERMAL_PROT_110C,
RTW89_QUIRK_HW_INFO_SYSFS,
RTW89_QUIRK_DISABLE_2GHZ,
NUM_OF_RTW89_QUIRKS,
};

3
drivers/net/wireless/realtek/rtw89/rtw8852cu.c
View File

@@ -97,7 +97,8 @@ static const struct rtw89_driver_info rtw89_8852cu_valve_info = {
.variant = NULL,
.board = &rtw89_8852cu_valve_board,
.quirks = NULL,
.dev_id_quirks = BIT(RTW89_QUIRK_HW_INFO_SYSFS),
.dev_id_quirks = BIT(RTW89_QUIRK_HW_INFO_SYSFS) |
BIT(RTW89_QUIRK_DISABLE_2GHZ),
.bus = {
.usb = &rtw8852c_usb_info,
},