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Re: rtl8822cs, mainline 6.16-rc7: kernel reports ' unsupported rf path'

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> Wiadomość napisana przez Ping-Ke Shih <pkshih@xxxxxxxxxxx> w dniu 23 lip 2025, o godz. 10:19:
> 
> working state:
>   rtw88: rtw_chip_parameter_setup:1859 hal->chip_version=0x493d30ea
> non-working state:
>   rtw88: rtw_chip_parameter_setup:1859 hal->chip_version=0x303030ea
> 
> I'd try to read more times to see if it can become correct...
> Also, I force to use correct value at the last iteration to see if it
> can work even incorrect value of register 0xF0.
> 
> diff --git a/drivers/net/wireless/realtek/rtw88/main.c b/drivers/net/wireless/realtek/rtw88/main.c
> index fa0ed39cb199..137418d1108d 100644
> --- a/drivers/net/wireless/realtek/rtw88/main.c
> +++ b/drivers/net/wireless/realtek/rtw88/main.c
> @@ -1858,9 +1861,14 @@ static int rtw_chip_parameter_setup(struct rtw_dev *rtwdev)
>                return -EINVAL;
>        }
> 
> -       hal->chip_version = rtw_read32(rtwdev, REG_SYS_CFG1);
> +       for (int i = 0; i < 20; i++) {
> +       hal->chip_version = i == 19 ? 0x493d30ea : rtw_read32(rtwdev, REG_SYS_CFG1);
>        hal->cut_version = BIT_GET_CHIP_VER(hal->chip_version);
>        hal->mp_chip = (hal->chip_version & BIT_RTL_ID) ? 0 : 1;
> +       printk("rtw88: %s:%d hal->chip_version=0x%x\n",
> +               __func__, __LINE__, hal->chip_version);
> +       mdelay(100);
> +       }
>        if (hal->chip_version & BIT_RF_TYPE_ID) {
>                hal->rf_type = RF_2T2R;
>                hal->rf_path_num = 2;
> 
> 

well - with above patch all starts to work well :-)
10 boots, 10 working wifi with correct scans.

demsg from working sys: https://termbin.com/bhs4




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