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Re: [PATCH v12 8/9] add TC G210 platform driver

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  Re: [PATCH v12 8/9] add TC G210 platform driver Rob Herring <robh@kernel.org> - 2016-04-04 07:20 +0200
    Re: [PATCH v12 8/9] add TC G210 platform driver Joao Pinto <Joao.Pinto@synopsys.com> - 2016-04-04 12:50 +0200
      Re: [PATCH v12 8/9] add TC G210 platform driver Rob Herring <robh@kernel.org> - 2016-04-07 20:00 +0200
        Re: [PATCH v12 8/9] add TC G210 platform driver Joao Pinto <Joao.Pinto@synopsys.com> - 2016-04-08 11:20 +0200

#1370359 — Re: [PATCH v12 8/9] add TC G210 platform driver

On Thu, Mar 31, 2016 at 07:57:21PM +0100, Joao Pinto wrote:
> This patch adds a glue platform driver for the Synopsys G210 Test Chip.
> 
> Signed-off-by: Joao Pinto <jpinto@synopsys.com>
> ---
> Changes v11->v12 (Tomas Winkler):
> - custom_phy_initialization replaced by phy_initialization
> Changes v10->v11 (Arnd Bergmann):
> - vops structs are now passed in .data
> Changes v0->v10:
> - This patch only appeared in v10
> 
>  .../devicetree/bindings/ufs/tc-dwc-g210-pltfrm.txt |  26 +++++
>  drivers/scsi/ufs/Kconfig                           |   9 ++
>  drivers/scsi/ufs/Makefile                          |   1 +
>  drivers/scsi/ufs/tc-dwc-g210-pltfrm.c              | 113 +++++++++++++++++++++
>  4 files changed, 149 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/ufs/tc-dwc-g210-pltfrm.txt
>  create mode 100644 drivers/scsi/ufs/tc-dwc-g210-pltfrm.c
> 
> diff --git a/Documentation/devicetree/bindings/ufs/tc-dwc-g210-pltfrm.txt b/Documentation/devicetree/bindings/ufs/tc-dwc-g210-pltfrm.txt
> new file mode 100644
> index 0000000..6ec9647
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/ufs/tc-dwc-g210-pltfrm.txt
> @@ -0,0 +1,26 @@
> +* Universal Flash Storage (UFS) DesignWare Host Controller
> +
> +DWC_UFS nodes are defined to describe on-chip UFS host controllers and MPHY.
> +Each UFS controller instance should have its own node.
> +
> +Required properties:
> +- compatible	: compatible list must contain the PHY type & version:
> +			"snps, g210-tc-6.00-20bit"
> +			"snps, g210-tc-6.00-40bit"
Remove the space              ^

> +		  complemented with the Controller IP version:
> +			"snps, dwc-ufshcd-1.40a"

ditto

Combining the phy and controller compatible strings is a bit strange. 
Generally, they would be separate nodes using the common phy binding.

> +		  complemented with the JEDEC version:
> +			"jedec,ufs-1.1"
> +			"jedec,ufs-2.0"
> +
> +- reg		: <registers mapping>
> +- interrupts	: <interrupt mapping for UFS host controller IRQ>
> +
> +Example for a setup using a 1.40a DWC Controller with a 6.00 G210 40-bit TC:
> +	dwc_ufs@d0000000 {

No underscores please.

> +		compatible = "snps, g210-tc-6.00-40bit",
> +			     "snps, dwc-ufshcd-1.40a",
> +			     "jedec,ufs-2.0";
> +		reg = < 0xd0000000 0x10000 >;
> +		interrupts = < 24 >;
> +	};

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#1370536

Hi Rob,

On 4/4/2016 6:15 AM, Rob Herring wrote:
> On Thu, Mar 31, 2016 at 07:57:21PM +0100, Joao Pinto wrote:
>> This patch adds a glue platform driver for the Synopsys G210 Test Chip.
>>
>> Signed-off-by: Joao Pinto <jpinto@synopsys.com>
>> ---

[snip]

>> +
>> +Required properties:
>> +- compatible	: compatible list must contain the PHY type & version:
>> +			"snps, g210-tc-6.00-20bit"
>> +			"snps, g210-tc-6.00-40bit"
> Remove the space              ^
> 
>> +		  complemented with the Controller IP version:
>> +			"snps, dwc-ufshcd-1.40a"
> 
> ditto

Ok, will do that!

> 
> Combining the phy and controller compatible strings is a bit strange. 
> Generally, they would be separate nodes using the common phy binding.
> 

Correct, but in this case is just the compatibility string is just to tell the
dw ufs host that it has a 40-bit or a 20-bit test chip connected. The Test chip
is initialized by a unipro command sequence and there is no more ops related to it.

>> +		  complemented with the JEDEC version:
>> +			"jedec,ufs-1.1"
>> +			"jedec,ufs-2.0"
>> +
>> +- reg		: <registers mapping>
>> +- interrupts	: <interrupt mapping for UFS host controller IRQ>
>> +
>> +Example for a setup using a 1.40a DWC Controller with a 6.00 G210 40-bit TC:
>> +	dwc_ufs@d0000000 {
> 
> No underscores please.

Ok, will update it.

> 
>> +		compatible = "snps, g210-tc-6.00-40bit",
>> +			     "snps, dwc-ufshcd-1.40a",
>> +			     "jedec,ufs-2.0";
>> +		reg = < 0xd0000000 0x10000 >;
>> +		interrupts = < 24 >;
>> +	};
> 

Will send a v13 with these tweaks.

Thanks.

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#1373609

On Mon, Apr 04, 2016 at 11:48:23AM +0100, Joao Pinto wrote:
> 
> Hi Rob,
> 
> On 4/4/2016 6:15 AM, Rob Herring wrote:
> > On Thu, Mar 31, 2016 at 07:57:21PM +0100, Joao Pinto wrote:
> >> This patch adds a glue platform driver for the Synopsys G210 Test Chip.
> >>
> >> Signed-off-by: Joao Pinto <jpinto@synopsys.com>
> >> ---
> 
> [snip]
> 
> >> +
> >> +Required properties:
> >> +- compatible	: compatible list must contain the PHY type & version:
> >> +			"snps, g210-tc-6.00-20bit"
> >> +			"snps, g210-tc-6.00-40bit"
> > Remove the space              ^
> > 
> >> +		  complemented with the Controller IP version:
> >> +			"snps, dwc-ufshcd-1.40a"
> > 
> > ditto
> 
> Ok, will do that!
> 
> > 
> > Combining the phy and controller compatible strings is a bit strange. 
> > Generally, they would be separate nodes using the common phy binding.
> > 
> 
> Correct, but in this case is just the compatibility string is just to tell the
> dw ufs host that it has a 40-bit or a 20-bit test chip connected. The Test chip
> is initialized by a unipro command sequence and there is no more ops related to it.

Okay. In that case, I think it should be a separate property unless the 
controller h/w is synthesized for one or the other.

Rob

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#1374097

Hi Rob,

On 4/7/2016 6:57 PM, Rob Herring wrote:
> On Mon, Apr 04, 2016 at 11:48:23AM +0100, Joao Pinto wrote:
>>
>> Hi Rob,
>>
>> On 4/4/2016 6:15 AM, Rob Herring wrote:
>>> On Thu, Mar 31, 2016 at 07:57:21PM +0100, Joao Pinto wrote:
>>>> This patch adds a glue platform driver for the Synopsys G210 Test Chip.
>>>>
>>>> Signed-off-by: Joao Pinto <jpinto@synopsys.com>
>>>> ---
>>
>> [snip]
>>
>>>> +
>>>> +Required properties:
>>>> +- compatible	: compatible list must contain the PHY type & version:
>>>> +			"snps, g210-tc-6.00-20bit"
>>>> +			"snps, g210-tc-6.00-40bit"
>>> Remove the space              ^
>>>
>>>> +		  complemented with the Controller IP version:
>>>> +			"snps, dwc-ufshcd-1.40a"
>>>
>>> ditto
>>
>> Ok, will do that!
>>
>>>
>>> Combining the phy and controller compatible strings is a bit strange. 
>>> Generally, they would be separate nodes using the common phy binding.
>>>
>>
>> Correct, but in this case is just the compatibility string is just to tell the
>> dw ufs host that it has a 40-bit or a 20-bit test chip connected. The Test chip
>> is initialized by a unipro command sequence and there is no more ops related to it.
> 
> Okay. In that case, I think it should be a separate property unless the 
> controller h/w is synthesized for one or the other.

Yes, the hardware must be synthesized for a certain PHY type, 20 or 40-bit.

> 
> Rob
> 

Joao

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