linux-kernel - Re: [PATCH] Revert "mmc: dw_mmc-rockchip: add runtime PM support"

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Date:   Fri, 30 Dec 2016 10:44:40 +0800
From:   Randy Li <randy.li@...k-chips.com>
To:     Jaehoon Chung <jh80.chung@...sung.com>, ayaka <ayaka@...lik.info>,
        Jaehoon Chung <jh80.chung@...il.com>,
        Shawn Lin <shawn.lin@...k-chips.com>, linux-mmc@...r.kernel.org
Cc:     ulf.hansson@...aro.org, heiko@...ech.de,
        linux-kernel@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, xzy.xu@...k-chips.com
Subject: Re: [PATCH] Revert "mmc: dw_mmc-rockchip: add runtime PM support"



On 12/30/2016 10:35 AM, Jaehoon Chung wrote:
> On 12/30/2016 12:07 AM, ayaka wrote:
>>
>>
>> On 12/29/2016 10:04 PM, Jaehoon Chung wrote:
>>> Hi,
>>>
>>> On 12/29/2016 09:55 PM, ayaka wrote:
>>>> [    5.849733] rk_gmac-dwmac ff290000.ethernet (unnamed net_device) (uninitialized): Enable RX Mitigation via HW Watchdog Timer
>>>> [    5.944512] mmc_host mmc1: Bus speed (slot 0) = 50000000Hz (slot req 50000000Hz, actual 50000000HZ div = 0)
>>>> [    5.958249] mmc1: new ultra high speed DDR50 SDIO card at address 0001
>>>> [    6.294548] dwmmc_rockchip ff0f0000.dwmmc: Successfully tuned phase to 177
>>>> [    6.301591] mmc2: new HS200 MMC card at address 0001
>>>> [    6.306758] mmc_host mmc0: Bus speed (slot 0) = 300000Hz (slot req 300000Hz, actual 300000HZ div = 0)
>>>> [    6.316830] mmcblk2: mmc2:0001 AGND3R 14.6 GiB
>>>> [    6.321881] mmcblk2boot0: mmc2:0001 AGND3R partition 1 4.00 MiB
>>>> [    6.328331] mmcblk2boot1: mmc2:0001 AGND3R partition 2 4.00 MiB
>>>> [    6.334792] mmcblk2rpmb: mmc2:0001 AGND3R partition 3 4.00 MiB
>>>> [    6.344295]  mmcblk2: p1 p2 p3 p4 p5 p6 p7
>>>> [    6.469892] mmc_host mmc0: Bus speed (slot 0) = 200000Hz (slot req 200000Hz, actual 200000HZ div = 0)
>>>> [    6.621888] mmc_host mmc0: Bus speed (slot 0) = 187500Hz (slot req 100000Hz, actual 93750HZ div = 1)
>>>> [    6.917883] libphy: stmmac: probed
>>>> [    6.921319] rk_gmac-dwmac ff290000.ethernet eth0: PHY ID 001cc915 at 0 IRQ POLL (stmmac-0:00) active
>>>> [    6.930476] rk_gmac-dwmac ff290000.ethernet eth0: PHY ID 001cc915 at 2 IRQ POLL (stmmac-0:02)
>>>> [    6.939757] input: gpio-keys as /devices/platform/gpio-keys/input/input0
>>>> [    6.946937] rtc-hym8563 0-0051: no valid clock/calendar values available
>>>> [    6.953694] rtc-hym8563 0-0051: hctosys: unable to read the hardware clock
>>>> [    6.961262] vcc_sd: disabling
>>>> [    6.964275] dovdd_1v8: disabling
>>>> [    6.967527] dvdd_1v2: disabling
>>>> [    6.971006] vdd10_lcd: disabling
>>>> [    6.974701] vcc18_lcd: disabling
>>>> [    6.978467] ttyS2 - failed to request DMA
>>>> [    7.101883] mmc_host mmc0: Bus speed (slot 0) = 400000Hz (slot req 400000Hz, actual 400000HZ div = 0)
>>>> [    7.253874] mmc_host mmc0: Bus speed (slot 0) = 300000Hz (slot req 300000Hz, actual 300000HZ div = 0)
>>>> [    7.405883] mmc_host mmc0: Bus speed (slot 0) = 200000Hz (slot req 200000Hz, actual 200000HZ div = 0)
>>>> [    7.557885] mmc_host mmc0: Bus speed (slot 0) = 187500Hz (slot req 100000Hz, actual 93750HZ div = 1)
>>>> [    8.037872] mmc_host mmc0: Bus speed (slot 0) = 400000Hz (slot req 400000Hz, actual 400000HZ div = 0)
>>>> [    8.189877] mmc_host mmc0: Bus speed (slot 0) = 300000Hz (slot req 300000Hz, actual 300000HZ div = 0)
>>>> [    8.341881] mmc_host mmc0: Bus speed (slot 0) = 200000Hz (slot req 200000Hz, actual 200000HZ div = 0)
>>>> [    8.493884] mmc_host mmc0: Bus speed (slot 0) = 187500Hz (slot req 100000Hz, actual 93750HZ div = 1)
>>>> [    8.973871] mmc_host mmc0: Bus speed (slot 0) = 400000Hz (slot req 400000Hz, actual 400000HZ div = 0)
>>>> [    9.125876] mmc_host mmc0: Bus speed (slot 0) = 300000Hz (slot req 300000Hz, actual 300000HZ div = 0)
>>>> [    9.277884] mmc_host mmc0: Bus speed (slot 0) = 200000Hz (slot req 200000Hz, actual 200000HZ div = 0)
>>>> [    9.429882] mmc_host mmc0: Bus speed (slot 0) = 187500Hz (slot req 100000Hz, actual 93750HZ div = 1)
>>>>
>>>> looping here
>>>>
>>>> If I revert that patch, there are still lots of Bus speed messages, but finally would enter into system.
>>>>
>>> Plz..Don't put the comment on the top.
>>>
>>> Which kernel did you use?
>> Add linux-next specific files for 20161224
>
> mmc0 is what card? Is it polling for detecting card?
> (It seems the SD-card..right?)
Yes, but the Firefly release won't show that, just stop at "ttyS2 - 
failed to request DMA". I check both the firefly reload and firefly 
release, they both have a cd line for them, so it won't be poll mode.
> Those logs should be polled for detecting mmc0 card..Hmm..I sent the patch for disabling log message when polling.
> If this log is displayed, then my patch might be some wrong.. :(
>
> Best Regards,
> Jaehoon Chung
>
>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>
>
> [snip]
>
>>
>>
>>
>>
>
>

-- 
Randy Li
The third produce department
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