linux-kernel - Re: [PATCH v3 6/7] mmc: sdhci_am654: Fix SDHCI_RESET

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Date:   Tue, 25 Oct 2022 14:53:46 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Brian Norris <briannorris@...omium.org>,
        Adrian Hunter <adrian.hunter@...el.com>
Cc:     Ulf Hansson <ulf.hansson@...aro.org>,
        Shawn Lin <shawn.lin@...k-chips.com>,
        linux-mmc@...r.kernel.org, Al Cooper <alcooperx@...il.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Sowjanya Komatineni <skomatineni@...dia.com>,
        Broadcom internal kernel review list 
        <bcm-kernel-feedback-list@...adcom.com>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Florian Fainelli <f.fainelli@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Thierry Reding <thierry.reding@...il.com>,
        Fabio Estevam <festevam@...il.com>,
        Michal Simek <michal.simek@...inx.com>,
        linux-kernel@...r.kernel.org, Shawn Guo <shawnguo@...nel.org>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        linux-arm-msm@...r.kernel.org, Haibo Chen <haibo.chen@....com>,
        Andy Gross <agross@...nel.org>,
        linux-arm-kernel@...ts.infradead.org,
        Faiz Abbas <faiz_abbas@...com>,
        Jonathan Hunter <jonathanh@...dia.com>
Subject: Re: [PATCH v3 6/7] mmc: sdhci_am654: Fix SDHCI_RESET_ALL for CQHCI

On 10/25/22 14:45, Brian Norris wrote:
> On Tue, Oct 25, 2022 at 04:10:44PM +0300, Adrian Hunter wrote:
>> On 24/10/22 20:55, Brian Norris wrote:
>>> diff --git a/drivers/mmc/host/sdhci_am654.c b/drivers/mmc/host/sdhci_am654.c
>>> index 8f1023480e12..6a282c7a221e 100644
>>> --- a/drivers/mmc/host/sdhci_am654.c
>>> +++ b/drivers/mmc/host/sdhci_am654.c
> 
>>> @@ -378,7 +379,7 @@ static void sdhci_am654_reset(struct sdhci_host *host, u8 mask)
>>>   	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
>>>   	struct sdhci_am654_data *sdhci_am654 = sdhci_pltfm_priv(pltfm_host);
>>>   
>>> -	sdhci_reset(host, mask);
>>> +	sdhci_and_cqhci_reset(host, mask);
>>>   
>>>   	if (sdhci_am654->quirks & SDHCI_AM654_QUIRK_FORCE_CDTEST) {
>>>   		ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
>>
>> What about sdhci_reset in sdhci_am654_ops ?
> 
> Oops, I think you caught a big fallacy in some of my patches: I assumed
> there was a single reset() implementation in a given driver (an unwise
> assumption, I realize). I see at least sdhci-brcmstb.c also has several
> variant ops that call sdhci_reset(), and I should probably convert them
> too.

You got it right for sdhci-brcmstb.c because "supports-cqe" which gates 
the enabling of CQE can only be found with the "brcm,bcm7216-sdhci" 
compatible which implies using brcmstb_reset().
-- 
Florian