Re: [PATCH] mmc: sdhci-pci: disable intel voltage switch if unsupported

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On Mon, Oct 22, 2018 at 03:34:24PM +0300, Adrian Hunter wrote:
> On 22/10/18 12:14 PM, Anisse Astier wrote:
[snip]
> > [   16.823947] mmc0: sdhci: ============ SDHCI REGISTER DUMP ===========
> > [   16.823956] mmc0: sdhci: Sys addr:  0x00000008 | Version:  0x00001002
> > [   16.823964] mmc0: sdhci: Blk size:  0x00007200 | Blk cnt:  0x00000008
> > [   16.823971] mmc0: sdhci: Argument:  0x00cf3ff0 | Trn mode: 0x0000003b
> > [   16.823978] mmc0: sdhci: Present:   0x1fff0001 | Host ctl: 0x0000003d
> > [   16.823985] mmc0: sdhci: Power:     0x0000000b | Blk gap:  0x00000080
> > [   16.823992] mmc0: sdhci: Wake-up:   0x00000000 | Clock:    0x00000007
> > [   16.823999] mmc0: sdhci: Timeout:   0x00000006 | Int stat: 0x00000000
> > [   16.824006] mmc0: sdhci: Int enab:  0x02ff000b | Sig enab: 0x02ff000b
> > [   16.824013] mmc0: sdhci: AC12 err:  0x00000000 | Slot int: 0x00000000
> > [   16.824020] mmc0: sdhci: Caps:      0x546ec881 | Caps_1:   0x80000807
> > [   16.824027] mmc0: sdhci: Cmd:       0x0000123a | Max curr: 0x00000000
> > [   16.824034] mmc0: sdhci: Resp[0]:   0x00000900 | Resp[1]:  0x00000000
> > [   16.824041] mmc0: sdhci: Resp[2]:   0x00000000 | Resp[3]:  0x00000900
> > [   16.824047] mmc0: sdhci: Host ctl2: 0x0000000d
> > [   16.824055] mmc0: sdhci: ADMA Err:  0x00000000 | ADMA Ptr: 0x000000016bbf5200
> > [   16.824058] mmc0: sdhci: ============================================
> 
> Could be a BIOS issue.  Do you have the most up to date BIOS?

What makes you think it could be ?

I have looked into the BIOS. This specific laptop model is a Clevo
N770GU. It does not have publicly-downloadable BIOS updates. Even it had
a BIOS fix, shouldn't we also have a best effort fix in Linux for all
those machines that are never updated ?

Regards,

Anisse



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