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From:   Linus Walleij <linus.walleij@linaro.org>
Date:   Thu, 20 May 2021 01:41:10 +0200
Message-ID: <CACRpkdY9RUc78dj7sw5_A5XJwpbYROzaq1ziYmN2=cqs_AJfrw@mail.gmail.com>
Subject: Re: [PATCH] brcmfmac: Obtain reset GPIO
To:     Ulf Hansson <ulf.hansson@linaro.org>
Cc:     Arend van Spriel <arend.vanspriel@broadcom.com>,
        Arend van Spriel <aspriel@gmail.com>,
        Franky Lin <franky.lin@broadcom.com>,
        Hante Meuleman <hante.meuleman@broadcom.com>,
        Chi-hsien Lin <chi-hsien.lin@infineon.com>,
        Wright Feng <wright.feng@infineon.com>,
        Chung-hsien Hsu <chung-hsien.hsu@infineon.com>,
        linux-wireless <linux-wireless@vger.kernel.org>
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On Tue, May 11, 2021 at 10:48 AM Ulf Hansson <ulf.hansson@linaro.org> wrote:

> I think this boils down to that to allow the mmc core to detect and
> initialize the SDIO card, it needs to manage potential reset pins as
> well.
>
> In cases when the SDIO func driver may need to execute a reset, the
> mmc core provides two APIs, mmc_hw|sw_reset().
>
> Does this make sense to you?

I think so, in this case (Samsung Janice on Ux500) the boot loader
desserts reset so we are fine, but I think it should be utilized properly
somehow, the vendor went to lots of trouble to put this reset line
there physically.

What is my next step? :D

Yours,
Linus Walleij