Re: NCT6776 on ASRock Z77 Pro4-M

[Guenter Roeck <linux@xxxxxxxxxxxx>]

On 02/05/2015 11:08 PM, eaut wrote:
> Hi Guenter,
>
> the DMI information is:
>
> BOARD_VENDOR = "ASRock"
> BOARD_NAME = "Z77 Pro4-M"
> BIOS_VERSION = "P2.00"

Hi Erich,

Please don't top-post.

Can you test the out-of-tree driver at https://github.com/groeck/nct6775 ?

Thanks,
Guenter

> thx, Erich
>
>
> On Fri, Feb 6, 2015 at 4:23 AM, Guenter Roeck <linux@xxxxxxxxxxxx> wrote:
> > On 02/05/2015 12:48 PM, eaut wrote:
> > > Hello,
> > >
> > > When I recently started to use UEFI "Ultra-FastBoot" on a ASRock Z77
> > > Pro4-M
> > > board I discovered that fans 3-5 were suddenly missing. After booting in
> > > Fast or Normal mode the fans were showing up correctly again. So obviously
> > > a firmware bug.
> > >
> > > After some googling and reading of the Nuvoton NCT6776 data sheet I came
> > > up with the following fix:
> > >
> > >       # enter NCT6776 "Extended Function Mode"
> > >       isaset -y 0x2e 0x2e 0x87 0x87
> > >       # select logical device HW-MONITOR
> > >       isaset -y 0x2e 0x2f 0x07 0x0b
> > >       # enable fans 3-5 by setting bits 5-7 in reg 0x30
> > >       isaset -y 0x2e 0x2f 0x30 0xe0 0xe0
> > >
> > > In the process I have created a small script to list all the NCT6776 fan
> > > related settings and optionally all NCT6776 GPIO registers. Hopefully it
> > > will save someone else the time I had to spend on this issue.
> > >
> > > https://github.com/eaut/nct6776/blob/master/nct6776-fanpin-info.sh
> > >
> > > Since quite a few mainboards seem to have firmware related register
> > > initialization issues wouldn't it make sense to add an optional module
> > > parameter to be able to override register settings when loading the
> > > nct6775
> > > driver module?
> > >
> > > Example:
> > >
> > >          ldev reg  val  mask
> > > setreg=0x0b,0x30,0xe0,0xe0,next-sequence,...
> >
> > I would not want to risk that, but I am not adverse to add code which
> > configures the registers as needed for specific mainboards.
> >
> > What is the exact DMI information for your board (Vendor and board name) ?
> >
> > Thanks,
> > Guenter
>
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