linux-kernel - Re: [RFC PATCH v1 13/19] rtw88: mac: Add support for SDIO specifics in the power on sequence

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Message-ID: <CAFBinCAzmgwRAzAbXM17nmPw0bo9Mzx6gQQQrR3tPDb+n2jDHA@mail.gmail.com>
Date:   Thu, 29 Dec 2022 11:49:55 +0100
From:   Martin Blumenstingl <martin.blumenstingl@...glemail.com>
To:     Ping-Ke Shih <pkshih@...ltek.com>
Cc:     "linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
        Yan-Hsuan Chuang <tony0620emma@...il.com>,
        Kalle Valo <kvalo@...nel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
        Chris Morgan <macroalpha82@...il.com>,
        Nitin Gupta <nitin.gupta981@...il.com>,
        Neo Jou <neojou@...il.com>,
        Jernej Skrabec <jernej.skrabec@...il.com>
Subject: Re: [RFC PATCH v1 13/19] rtw88: mac: Add support for SDIO specifics
 in the power on sequence

Hi Ping-Ke,

On Thu, Dec 29, 2022 at 2:15 AM Ping-Ke Shih <pkshih@...ltek.com> wrote:
[...]
> > +             if (rtw_sdio_is_sdio30_supported(rtwdev))
> > +                     rtw_write8_set(rtwdev, REG_HCI_OPT_CTRL + 2, BIT(2));
>
> BIT_USB_LPM_ACT_EN BIT(10)   // reg_addr +2, so bit >> 8
The ones above are clear to me, thank you.
But for this one I have a question: don't we need BIT(18) for this one
and then bit >> 16?
reg_addr + 0: bits 0..7
reg_addr + 1: bits 8..15
reg_addr + 2: bits 16..23


Best regards,
Martin