From: Matthias Brugger <matthias.bgg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Kevin Hilman <khilman-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>,
linux-mediatek-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
Cc: Sascha Hauer <s.hauer-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
Subject: Re: mt1873-evb: MMC failing with linux-next
Date: Fri, 12 Feb 2016 17:01:26 +0100 [thread overview]
Message-ID: <56BE01D6.40908@gmail.com> (raw)
In-Reply-To: <56BDF937.60208-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
On 12/02/16 16:24, Matthias Brugger wrote:
> Hi Kevin,
>
> On 09/02/16 02:18, Kevin Hilman wrote:
>> Hello,
>>
>> I tried getting MMC working with linux-next (next-20160208) on
>> mt8173-evb by enabling a few options[1] on top of the default defconfig,
>> and this results in a kernel that hangs as soon as it starts userspace.
>>
>> The MMC driver seems to start, though has some regulator issues:
>>
>> [ 0.526380] sdhci: Secure Digital Host Controller Interface driver
>> [ 0.527176] sdhci: Copyright(c) Pierre Ossman
>> [ 0.528835] vio18: unsupportable voltage range: 3300000-1980000uV
>> [ 0.529610] mtk-msdc 11230000.mmc: Regulator set error -22:
>> 3300000 - 3300000
>> [ 0.563731] mtk-msdc 11240000.mmc: Got CD GPIO
>>
>> The driver appears to be attempting to set 3.3V but using a 1.8V
>> regulator (vio18), which is failing.
>>
>> Then, the kernel hangs after freeing unused memory:
>>
>> [ 0.616386] hctosys: unable to open rtc device (rtc0)
>> [ 0.624118] usb_vbus: disabling
>> [ 0.624547] vusb: disabling
>> [ 0.624929] vgp6: disabling
>> [ 0.625635] ALSA device list:
>> [ 0.626009] No soundcards found.
>> [ 0.626963] Freeing unused kernel memory: 724K (ffffffc000977000 -
>> ffffffc000a2c000)
>>
>> And nothing further here.
>>
>
> I can see the warning from the mmc regulator access, but after that my
> board boots just fine.
> I'm using linux-next as of today (20160212).
> I attached my config, it should be defconfig plus the config options you
> mentioned (and an initramfs).
>
> Is this the configuration you have?
I spotted an error in my scripts to build the kernel. After fixing this
I can reproduce your error.
Regards,
Matthias
>
> Regards,
> Matthias
>
>> It boots fine when disabling the MMC driver (CONFIG_MMC_MTK=n).
>>
>> Any ideas?
>>
>> Kevin
>>
>> [1]
>> CONFIG_MMC_MTK=y
>> CONFIG_MFD_MT6397=y
>> CONFIG_REGULATOR_MT6397=y
>> CONFIG_MTK_PMIC_WRAP=y
>>
WARNING: multiple messages have this Message-ID (diff)
From: matthias.bgg@gmail.com (Matthias Brugger)
To: linux-arm-kernel@lists.infradead.org
Subject: mt1873-evb: MMC failing with linux-next
Date: Fri, 12 Feb 2016 17:01:26 +0100 [thread overview]
Message-ID: <56BE01D6.40908@gmail.com> (raw)
In-Reply-To: <56BDF937.60208@gmail.com>
On 12/02/16 16:24, Matthias Brugger wrote:
> Hi Kevin,
>
> On 09/02/16 02:18, Kevin Hilman wrote:
>> Hello,
>>
>> I tried getting MMC working with linux-next (next-20160208) on
>> mt8173-evb by enabling a few options[1] on top of the default defconfig,
>> and this results in a kernel that hangs as soon as it starts userspace.
>>
>> The MMC driver seems to start, though has some regulator issues:
>>
>> [ 0.526380] sdhci: Secure Digital Host Controller Interface driver
>> [ 0.527176] sdhci: Copyright(c) Pierre Ossman
>> [ 0.528835] vio18: unsupportable voltage range: 3300000-1980000uV
>> [ 0.529610] mtk-msdc 11230000.mmc: Regulator set error -22:
>> 3300000 - 3300000
>> [ 0.563731] mtk-msdc 11240000.mmc: Got CD GPIO
>>
>> The driver appears to be attempting to set 3.3V but using a 1.8V
>> regulator (vio18), which is failing.
>>
>> Then, the kernel hangs after freeing unused memory:
>>
>> [ 0.616386] hctosys: unable to open rtc device (rtc0)
>> [ 0.624118] usb_vbus: disabling
>> [ 0.624547] vusb: disabling
>> [ 0.624929] vgp6: disabling
>> [ 0.625635] ALSA device list:
>> [ 0.626009] No soundcards found.
>> [ 0.626963] Freeing unused kernel memory: 724K (ffffffc000977000 -
>> ffffffc000a2c000)
>>
>> And nothing further here.
>>
>
> I can see the warning from the mmc regulator access, but after that my
> board boots just fine.
> I'm using linux-next as of today (20160212).
> I attached my config, it should be defconfig plus the config options you
> mentioned (and an initramfs).
>
> Is this the configuration you have?
I spotted an error in my scripts to build the kernel. After fixing this
I can reproduce your error.
Regards,
Matthias
>
> Regards,
> Matthias
>
>> It boots fine when disabling the MMC driver (CONFIG_MMC_MTK=n).
>>
>> Any ideas?
>>
>> Kevin
>>
>> [1]
>> CONFIG_MMC_MTK=y
>> CONFIG_MFD_MT6397=y
>> CONFIG_REGULATOR_MT6397=y
>> CONFIG_MTK_PMIC_WRAP=y
>>
next prev parent reply other threads:[~2016-02-12 16:01 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-09 1:18 mt1873-evb: MMC failing with linux-next Kevin Hilman
2016-02-09 1:18 ` Kevin Hilman
[not found] ` <7hegcmadfk.fsf-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>
2016-02-12 15:24 ` Matthias Brugger
2016-02-12 15:28 ` Matthias Brugger
2016-02-12 15:28 ` Matthias Brugger
[not found] ` <56BDF937.60208-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-02-12 16:01 ` Matthias Brugger [this message]
2016-02-12 16:01 ` Matthias Brugger
[not found] ` <56BE01D6.40908-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-02-12 21:42 ` Kevin Hilman
2016-02-12 21:42 ` Kevin Hilman
2016-02-15 3:52 ` Eddie Huang
2016-02-15 3:52 ` Eddie Huang
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