linux-kernel - Re: [PATCH] mmc: sdhci-msm: We need to restore_dll

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Message-ID: <CAD=FV=U4f_aUn2N91yCNXyjTJJkrCaGH-gk_pJeCDJHXPxh=nw@mail.gmail.com>
Date:   Thu, 27 Aug 2020 08:44:53 -0700
From:   Doug Anderson <dianders@...omium.org>
To:     Ulf Hansson <ulf.hansson@...aro.org>
Cc:     Veerabhadrarao Badiganti <vbadigan@...eaurora.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux MMC List <linux-mmc@...r.kernel.org>
Subject: Re: [PATCH] mmc: sdhci-msm: We need to restore_dll_config for sc7180

Hi,

On Thu, Aug 27, 2020 at 8:41 AM Douglas Anderson <dianders@...omium.org> wrote:
>
> Although sc7180 is supposed to have a hardware fix that means that we
> don't have to restore the DLL config like we did with sdm845,
> apparently the hardware fix doesn't work in all cases.  Until it's
> understood under exactly which cases we the hardware fix malfunctions,
> let's go back to restoring the DLL config whenever we do runtime
> resume.  This is safe and gets things working again.
>
> NOTE: we don't need to introduce a whole new "struct
> sdhci_msm_variant_info" for sc7180 since it would be exactly the same
> as the sdm845 one.  We'll just refer to that one.
>
> Signed-off-by: Douglas Anderson <dianders@...omium.org>
> ---
>
>  drivers/mmc/host/sdhci-msm.c | 1 +
>  1 file changed, 1 insertion(+)

Sorry for the spam.  I was too busy debugging and preparing my other
patches and didn't realize that Veerabhadrarao was sending at the
exact same time.  Let's take that one, AKA:

https://lore.kernel.org/r/1598541694-15694-1-git-send-email-vbadigan@codeaurora.org

-Doug