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[2/6] ARM: DTS: da850: Add node for edma0

Message ID 1406801934-23334-3-git-send-email-peter.ujfalusi@ti.com (mailing list archive)
State New, archived
Headers show

Commit Message

Peter Ujfalusi July 31, 2014, 10:18 a.m. UTC
Add DT node for edma0.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
 arch/arm/boot/dts/da850.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

Comments

Sergei Shtylyov July 31, 2014, 2:26 p.m. UTC | #1
On 07/31/2014 02:18 PM, Peter Ujfalusi wrote:

> Add DT node for edma0.

> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
> ---
>   arch/arm/boot/dts/da850.dtsi | 6 ++++++
>   1 file changed, 6 insertions(+)

> diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi
> index b695548dbb4e..41ce4e8bf227 100644
> --- a/arch/arm/boot/dts/da850.dtsi
> +++ b/arch/arm/boot/dts/da850.dtsi
> @@ -150,6 +150,12 @@
>   			};
>
>   		};
> +		edma0: edma@01c00000 {
> +			compatible = "ti,edma3";
> +			reg =	<0x0 0x10000>;

    Why the mismatch between the unit-address part of the node name and the 
"reg" property?

> +			interrupts = <11 13 12>;
> +			#dma-cells = <1>;
> +		};

WBR, Sergei
Peter Ujfalusi Aug. 1, 2014, 5:09 a.m. UTC | #2
On 07/31/2014 05:26 PM, Sergei Shtylyov wrote:
> On 07/31/2014 02:18 PM, Peter Ujfalusi wrote:
> 
>> Add DT node for edma0.
> 
>> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
>> ---
>>   arch/arm/boot/dts/da850.dtsi | 6 ++++++
>>   1 file changed, 6 insertions(+)
> 
>> diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi
>> index b695548dbb4e..41ce4e8bf227 100644
>> --- a/arch/arm/boot/dts/da850.dtsi
>> +++ b/arch/arm/boot/dts/da850.dtsi
>> @@ -150,6 +150,12 @@
>>               };
>>
>>           };
>> +        edma0: edma@01c00000 {
>> +            compatible = "ti,edma3";
>> +            reg =    <0x0 0x10000>;
> 
>    Why the mismatch between the unit-address part of the node name and the
> "reg" property?

For some reason the whole da850 uses offset from 0x01c00000 for the SoC IPs.
The nodes are under 'soc' and that has the ranges attribute.
I do not really like this either.

> 
>> +            interrupts = <11 13 12>;
>> +            #dma-cells = <1>;
>> +        };
> 
> WBR, Sergei
>
Sekhar Nori Aug. 1, 2014, 6:18 a.m. UTC | #3
On Friday 01 August 2014 10:39 AM, Peter Ujfalusi wrote:
> On 07/31/2014 05:26 PM, Sergei Shtylyov wrote:
>> On 07/31/2014 02:18 PM, Peter Ujfalusi wrote:
>>
>>> Add DT node for edma0.
>>
>>> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
>>> ---
>>>   arch/arm/boot/dts/da850.dtsi | 6 ++++++
>>>   1 file changed, 6 insertions(+)
>>
>>> diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi
>>> index b695548dbb4e..41ce4e8bf227 100644
>>> --- a/arch/arm/boot/dts/da850.dtsi
>>> +++ b/arch/arm/boot/dts/da850.dtsi
>>> @@ -150,6 +150,12 @@
>>>               };
>>>
>>>           };
>>> +        edma0: edma@01c00000 {
>>> +            compatible = "ti,edma3";
>>> +            reg =    <0x0 0x10000>;
>>
>>    Why the mismatch between the unit-address part of the node name and the
>> "reg" property?
> 
> For some reason the whole da850 uses offset from 0x01c00000 for the SoC IPs.
> The nodes are under 'soc' and that has the ranges attribute.
> I do not really like this either.

There is no reason I can remember for why we chose to go the offset +
ranges way. Probably based it on an early OMAP example. Right now lets
keep it that way unless there is a big disadvantage.

Thanks,
Sekhar
diff mbox

Patch

diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi
index b695548dbb4e..41ce4e8bf227 100644
--- a/arch/arm/boot/dts/da850.dtsi
+++ b/arch/arm/boot/dts/da850.dtsi
@@ -150,6 +150,12 @@ 
 			};
 
 		};
+		edma0: edma@01c00000 {
+			compatible = "ti,edma3";
+			reg =	<0x0 0x10000>;
+			interrupts = <11 13 12>;
+			#dma-cells = <1>;
+		};
 		serial0: serial@1c42000 {
 			compatible = "ns16550a";
 			reg = <0x42000 0x100>;