[30/37] dt-bindings: PCI: dra7xx: Add dt bindings to enable legacy mode
diff mbox

Message ID 1484216786-17292-31-git-send-email-kishon@ti.com
State New
Headers show

Commit Message

Kishon Vijay Abraham I Jan. 12, 2017, 10:26 a.m. UTC
Update device tree binding documentation of TI's dra7xx PCI
controller to include property for enabling legacy mode.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
---
 Documentation/devicetree/bindings/pci/ti-pci.txt |    4 ++++
 1 file changed, 4 insertions(+)

Comments

Rob Herring Jan. 18, 2017, 9:46 p.m. UTC | #1
On Thu, Jan 12, 2017 at 03:56:19PM +0530, Kishon Vijay Abraham I wrote:
> Update device tree binding documentation of TI's dra7xx PCI
> controller to include property for enabling legacy mode.
> 
> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
> ---
>  Documentation/devicetree/bindings/pci/ti-pci.txt |    4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/pci/ti-pci.txt b/Documentation/devicetree/bindings/pci/ti-pci.txt
> index 62f5f59..ed85e8e 100644
> --- a/Documentation/devicetree/bindings/pci/ti-pci.txt
> +++ b/Documentation/devicetree/bindings/pci/ti-pci.txt
> @@ -39,6 +39,10 @@ DEVICE MODE
>   - interrupts : one interrupt entries must be specified for main interrupt.
>   - num-ib-windows : number of inbound address translation windows
>   - num-ob-windows : number of outbound address translation windows
> + - syscon-legacy-mode: phandle to the syscon dt node. The 1st argument should
> +		       contain the register offset within syscon and the 2nd
> +		       argument should contain the bit field for setting the
> +		       legacy mode

What's legacy mode?

>  
>  Optional Property:
>   - gpios : Should be added if a gpio line is required to drive PERST# line
> -- 
> 1.7.9.5
> 
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Kishon Vijay Abraham I Feb. 16, 2017, 8:33 a.m. UTC | #2
Hi,

On Thursday 19 January 2017 03:16 AM, Rob Herring wrote:
> On Thu, Jan 12, 2017 at 03:56:19PM +0530, Kishon Vijay Abraham I wrote:
>> Update device tree binding documentation of TI's dra7xx PCI
>> controller to include property for enabling legacy mode.
>>
>> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
>> ---
>>  Documentation/devicetree/bindings/pci/ti-pci.txt |    4 ++++
>>  1 file changed, 4 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/pci/ti-pci.txt b/Documentation/devicetree/bindings/pci/ti-pci.txt
>> index 62f5f59..ed85e8e 100644
>> --- a/Documentation/devicetree/bindings/pci/ti-pci.txt
>> +++ b/Documentation/devicetree/bindings/pci/ti-pci.txt
>> @@ -39,6 +39,10 @@ DEVICE MODE
>>   - interrupts : one interrupt entries must be specified for main interrupt.
>>   - num-ib-windows : number of inbound address translation windows
>>   - num-ob-windows : number of outbound address translation windows
>> + - syscon-legacy-mode: phandle to the syscon dt node. The 1st argument should
>> +		       contain the register offset within syscon and the 2nd
>> +		       argument should contain the bit field for setting the
>> +		       legacy mode
> 
> What's legacy mode?

It's the name of the bit-field defined in TRM used to add workaround for errata
id i870 (See [PATCH 29/37] PCI: dwc: dra7xx: Workaround for errata id i870 of
this series). I'm not sure what it does internally.

Thanks
Kishon
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Patch
diff mbox

diff --git a/Documentation/devicetree/bindings/pci/ti-pci.txt b/Documentation/devicetree/bindings/pci/ti-pci.txt
index 62f5f59..ed85e8e 100644
--- a/Documentation/devicetree/bindings/pci/ti-pci.txt
+++ b/Documentation/devicetree/bindings/pci/ti-pci.txt
@@ -39,6 +39,10 @@  DEVICE MODE
  - interrupts : one interrupt entries must be specified for main interrupt.
  - num-ib-windows : number of inbound address translation windows
  - num-ob-windows : number of outbound address translation windows
+ - syscon-legacy-mode: phandle to the syscon dt node. The 1st argument should
+		       contain the register offset within syscon and the 2nd
+		       argument should contain the bit field for setting the
+		       legacy mode
 
 Optional Property:
  - gpios : Should be added if a gpio line is required to drive PERST# line