RE: [PATCH] i2c: ismt: Add Intel DNV PCI ID

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Hi Mika, 

> -----Original Message-----
> From: Mika Westerberg [mailto:mika.westerberg@xxxxxxxxxxxxxxx]
> Sent: Friday, February 19, 2016 12:39 AM
> To: Wolfram Sang <wsa@xxxxxxxxxxxxx>
> Cc: Heasley, Seth <seth.heasley@xxxxxxxxx>; Neil Horman
> <nhorman@xxxxxxxxxxxxx>; linux-i2c@xxxxxxxxxxxxxxx; Yates, Alexandra
> <alexandra.yates@xxxxxxxxx>
> Subject: Re: [PATCH] i2c: ismt: Add Intel DNV PCI ID
> 
> On Thu, Feb 18, 2016 at 04:54:33PM +0200, Mika Westerberg wrote:
> > Intel DNV has the same iSMT SMBus host controller than Intel Avoton.
> > Add DNV PCI ID to the list of supported devices.
> >
> > Signed-off-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
> 
> Wolfram,
> 
> Please do not yet apply this patch. It seems to have same PCI ID that
> Alexandra (Cc'd) added to i2c-i801.c.
> 
> Alexandra, are you sure that the PCI ID you added for DNV is actually
> compatible with i2c-i801.c?
> 


I go this device ID from the External Design Specification (EDS) document for DNV.  The EDS lists this as the SMBus Controller as follows: 
 Bus: 0 Device:18 Function:0 Device ID: 0x19AC Description:  SMBus Controller - Host  

In the same document there is a list of PCI IDs. 

> > ---
> >  drivers/i2c/busses/i2c-ismt.c | 2 ++
> >  1 file changed, 2 insertions(+)
> >
> > diff --git a/drivers/i2c/busses/i2c-ismt.c
> > b/drivers/i2c/busses/i2c-ismt.c index 7ba795b24e75..24c48e899a22
> > 100644
> > --- a/drivers/i2c/busses/i2c-ismt.c
> > +++ b/drivers/i2c/busses/i2c-ismt.c
> > @@ -76,6 +76,7 @@
> >  #define PCI_DEVICE_ID_INTEL_S1200_SMT0	0x0c59
> >  #define PCI_DEVICE_ID_INTEL_S1200_SMT1	0x0c5a
> >  #define PCI_DEVICE_ID_INTEL_AVOTON_SMT	0x1f15
> > +#define PCI_DEVICE_ID_INTEL_DNV_SMT	0x19ac
> >
> >  #define ISMT_DESC_ENTRIES	2	/* number of descriptor
> entries */
> >  #define ISMT_MAX_RETRIES	3	/* number of SMBus retries to
> attempt */
> > @@ -181,6 +182,7 @@ static const struct pci_device_id ismt_ids[] = {
> >  	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL,
> PCI_DEVICE_ID_INTEL_S1200_SMT0) },
> >  	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL,
> PCI_DEVICE_ID_INTEL_S1200_SMT1) },
> >  	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL,
> PCI_DEVICE_ID_INTEL_AVOTON_SMT) },
> > +	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL,
> PCI_DEVICE_ID_INTEL_DNV_SMT) },
> >  	{ 0, }
> >  };
> >
> > --
> > 2.7.0
Thank you, 
Alexandra. 
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