From: Ulf Hansson <ulf.hansson@linaro.org>
To: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>
Cc: "Mark Rutland" <mark.rutland@arm.com>,
"Kate Stewart" <kstewart@linuxfoundation.org>,
wsd_upstream@mediatek.com,
"linux-mmc@vger.kernel.org" <linux-mmc@vger.kernel.org>,
"Linus Walleij" <linus.walleij@linaro.org>,
"Al Cooper" <alcooperx@gmail.com>,
"Bjorn Andersson" <bjorn.andersson@linaro.org>,
linux-tegra <linux-tegra@vger.kernel.org>,
"Thierry Reding" <thierry.reding@gmail.com>,
"Pavel Machek" <pavel@ucw.cz>,
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"Michal Simek" <michal.simek@xilinx.com>,
"Jonathan Hunter" <jonathanh@nvidia.com>,
"Andy Gross" <agross@kernel.org>,
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linux-arm-msm <linux-arm-msm@vger.kernel.org>,
"Chun-Hung Wu" <chun-hung.wu@mediatek.com>,
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"moderated list:ARM/Mediatek SoC support"
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"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v5 1/5] mmc: core: Extend mmc_of_parse() to parse CQE bindings
Date: Wed, 6 May 2020 18:36:12 +0200 [thread overview]
Message-ID: <CAPDyKFq7ffHeWg-S41tLvScg_BXCUULig=G=EzD_to1TG0NhVg@mail.gmail.com> (raw)
In-Reply-To: <9bc2454f-0b42-e256-7927-2564b56f369f@codeaurora.org>
On Wed, 6 May 2020 at 15:01, Veerabhadrarao Badiganti
<vbadigan@codeaurora.org> wrote:
>
>
> On 4/28/2020 5:26 AM, Chun-Hung Wu wrote:
> > Parse CQE bindings "supports-cqe" and "disable-cqe-dcmd"
> > in mmc_of_parse().
> >
> > Signed-off-by: Chun-Hung Wu <chun-hung.wu@mediatek.com>
> > ---
> > drivers/mmc/core/host.c | 5 +++++
> > 1 file changed, 5 insertions(+)
> >
> > diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
> > index c876872..47521c6 100644
> > --- a/drivers/mmc/core/host.c
> > +++ b/drivers/mmc/core/host.c
> > @@ -302,6 +302,11 @@ int mmc_of_parse(struct mmc_host *host)
> > host->caps2 |= MMC_CAP2_NO_SD;
> > if (device_property_read_bool(dev, "no-mmc"))
> > host->caps2 |= MMC_CAP2_NO_MMC;
> > + if (device_property_read_bool(dev, "supports-cqe"))
> > + host->caps2 |= MMC_CAP2_CQE;
>
> This change is breaking emmc driver on qcom platforms where this dt
> property is defined.
>
> [ 1.543453] cqhci_deactivate+0xc/0x38
> [ 1.545627] sdhci_msm_reset+0x40/0x58
> [ 1.549447] sdhci_do_reset+0x48/0x7c
> [ 1.553180] __sdhci_read_caps+0x7c/0x214
> [ 1.556913] sdhci_setup_host+0x58/0xce8
> [ 1.560905] sdhci_msm_probe+0x588/0x8a4
> [ 1.564900] platform_drv_probe+0x4c/0xb0
>
> So, we cant have this flag defined before sdhci_setup_host().
>
> I will have to clear this cap and re-enable it in our initialization.
Thanks for reporting! I have dropped all the four patches from
Chun-Hung, so we can figure out how to fix this.
Please help to review the next version of the series.
>
> > + if (!device_property_read_bool(dev, "disable-cqe-dcmd")) {
> > + host->caps2 |= MMC_CAP2_CQE_DCMD;
> > + }
> >
> > /* Must be after "non-removable" check */
> > if (device_property_read_u32(dev, "fixed-emmc-driver-type", &drv_type) == 0) {
Kind regards
Uffe
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next prev parent reply other threads:[~2020-05-06 16:37 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-27 23:56 [PATCH v5 0/5] mmc: mediatek: add mmc cqhci support Chun-Hung Wu
2020-04-27 23:56 ` [PATCH v5 1/5] mmc: core: Extend mmc_of_parse() to parse CQE bindings Chun-Hung Wu
2020-05-06 13:00 ` Veerabhadrarao Badiganti
2020-05-06 16:36 ` Ulf Hansson [this message]
2020-05-07 16:33 ` Veerabhadrarao Badiganti
2020-05-08 5:05 ` Ulf Hansson
2020-05-12 1:16 ` Chun-Hung Wu
2020-04-27 23:56 ` [PATCH v5 2/5] mmc: host: Remove redundant " Chun-Hung Wu
2020-04-27 23:56 ` [PATCH v5 3/5] mmc: mediatek: refine msdc timeout api Chun-Hung Wu
2020-04-28 12:28 ` yong.mao
2020-04-27 23:56 ` [PATCH v5 4/5] mmc: mediatek: command queue support Chun-Hung Wu
2020-04-28 13:02 ` yong.mao
2020-04-27 23:56 ` [PATCH v5 5/5] dt-bindings: mmc: mediatek: Add document for mt6779 Chun-Hung Wu
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