[2/3] dt-bindings: remoteproc: stm32_rproc: update for firmware synchronization
diff mbox series

Message ID 20200827072101.26588-3-arnaud.pouliquen@st.com
State New, archived
Headers show
Series
  • ARM: stm32: add DT properties for remote proc synchronisation
Related show

Commit Message

Arnaud POULIQUEN Aug. 27, 2020, 7:21 a.m. UTC
Add new properties description used to attach to a pre-loaded
firmware according to the commit 9276536f455b3
("remoteproc: stm32: Parse syscon that will manage M4 synchronisation")
which updates the driver part.

Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
---
 .../bindings/remoteproc/st,stm32-rproc.yaml   | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

Comments

Rob Herring Sept. 9, 2020, 8:22 p.m. UTC | #1
On Thu, Aug 27, 2020 at 09:21:00AM +0200, Arnaud Pouliquen wrote:
> Add new properties description used to attach to a pre-loaded
> firmware according to the commit 9276536f455b3
> ("remoteproc: stm32: Parse syscon that will manage M4 synchronisation")
> which updates the driver part.
> 
> Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
> ---
>  .../bindings/remoteproc/st,stm32-rproc.yaml   | 19 +++++++++++++++++++
>  1 file changed, 19 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/remoteproc/st,stm32-rproc.yaml b/Documentation/devicetree/bindings/remoteproc/st,stm32-rproc.yaml
> index 4ffa25268fcc..e50957d86b1c 100644
> --- a/Documentation/devicetree/bindings/remoteproc/st,stm32-rproc.yaml
> +++ b/Documentation/devicetree/bindings/remoteproc/st,stm32-rproc.yaml
> @@ -96,6 +96,25 @@ properties:
>          3rd cell: register bitmask for the deep sleep bit
>      maxItems: 1
>  
> +  st,syscfg-m4-state:
> +    $ref: "/schemas/types.yaml#/definitions/phandle-array"
> +    description: |
> +      Reference to the tamp register which exposes the Cortex-M4 state.
> +        1st cell: phandle to syscon block
> +        2nd cell: register offset containing the Cortex-M4 state
> +        3rd cell: register bitmask for the Cortex-M4 state
> +    maxItems: 1
> +
> +  st,syscfg-rsc-tbl:
> +    $ref: "/schemas/types.yaml#/definitions/phandle-array"
> +    description: |
> +      Reference to the tamp register which references the Cortex-M4
> +      resource table address.
> +        1st cell: phandle to syscon block
> +        2nd cell: register offset containing the resource table address
> +        3rd cell: register bitmask for the resource table address
> +    maxItems: 1

Why can't these be implied? You can lookup the tamp syscon by 
compatible.

Please add these to the example.

> +
>    st,auto-boot:
>      $ref: /schemas/types.yaml#/definitions/flag
>      description:
> -- 
> 2.17.1
>
Arnaud POULIQUEN Sept. 11, 2020, 1:49 p.m. UTC | #2
Hi Rob,

On 9/9/20 10:22 PM, Rob Herring wrote:
> On Thu, Aug 27, 2020 at 09:21:00AM +0200, Arnaud Pouliquen wrote:
>> Add new properties description used to attach to a pre-loaded
>> firmware according to the commit 9276536f455b3
>> ("remoteproc: stm32: Parse syscon that will manage M4 synchronisation")
>> which updates the driver part.
>>
>> Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
>> ---
>>  .../bindings/remoteproc/st,stm32-rproc.yaml   | 19 +++++++++++++++++++
>>  1 file changed, 19 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/remoteproc/st,stm32-rproc.yaml b/Documentation/devicetree/bindings/remoteproc/st,stm32-rproc.yaml
>> index 4ffa25268fcc..e50957d86b1c 100644
>> --- a/Documentation/devicetree/bindings/remoteproc/st,stm32-rproc.yaml
>> +++ b/Documentation/devicetree/bindings/remoteproc/st,stm32-rproc.yaml
>> @@ -96,6 +96,25 @@ properties:
>>          3rd cell: register bitmask for the deep sleep bit
>>      maxItems: 1
>>  
>> +  st,syscfg-m4-state:
>> +    $ref: "/schemas/types.yaml#/definitions/phandle-array"
>> +    description: |
>> +      Reference to the tamp register which exposes the Cortex-M4 state.
>> +        1st cell: phandle to syscon block
>> +        2nd cell: register offset containing the Cortex-M4 state
>> +        3rd cell: register bitmask for the Cortex-M4 state
>> +    maxItems: 1
>> +
>> +  st,syscfg-rsc-tbl:
>> +    $ref: "/schemas/types.yaml#/definitions/phandle-array"
>> +    description: |
>> +      Reference to the tamp register which references the Cortex-M4
>> +      resource table address.
>> +        1st cell: phandle to syscon block
>> +        2nd cell: register offset containing the resource table address
>> +        3rd cell: register bitmask for the resource table address
>> +    maxItems: 1
> 
> Why can't these be implied? You can lookup the tamp syscon by 
> compatible.

I just made a copy/past of the  "st,syscfg-pdds" syscon description available in the same file [1]
  
I can provide a shorter descriptions, something like this:

   description: |
     Reference to the tamp syscon register and bitmask which contains the Cortex-M4
      resource table address.
   maxItems: 1

Would this meet your expectations? If yes, I will also add in next version an extra patch to fix [1]

[1] https://elixir.bootlin.com/linux/v5.9-rc3/source/Documentation/devicetree/bindings/remoteproc/st,stm32-rproc.yaml#L90

> 
> Please add these to the example.

I will extend the example with these properties

Thanks,
Arnaud

> 
>> +
>>    st,auto-boot:
>>      $ref: /schemas/types.yaml#/definitions/flag
>>      description:
>> -- 
>> 2.17.1
>>
Arnaud POULIQUEN Sept. 23, 2020, 2:30 p.m. UTC | #3
Hi Rob,

Gentle reminder.
As I'm not sure to well understand your comment I would appreciate if you could
confirm your expectation before I sent a v2.

Thanks in advance,
Arnaud 

On 9/11/20 3:49 PM, Arnaud POULIQUEN wrote:
> Hi Rob,
> 
> On 9/9/20 10:22 PM, Rob Herring wrote:
>> On Thu, Aug 27, 2020 at 09:21:00AM +0200, Arnaud Pouliquen wrote:
>>> Add new properties description used to attach to a pre-loaded
>>> firmware according to the commit 9276536f455b3
>>> ("remoteproc: stm32: Parse syscon that will manage M4 synchronisation")
>>> which updates the driver part.
>>>
>>> Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
>>> ---
>>>  .../bindings/remoteproc/st,stm32-rproc.yaml   | 19 +++++++++++++++++++
>>>  1 file changed, 19 insertions(+)
>>>
>>> diff --git a/Documentation/devicetree/bindings/remoteproc/st,stm32-rproc.yaml b/Documentation/devicetree/bindings/remoteproc/st,stm32-rproc.yaml
>>> index 4ffa25268fcc..e50957d86b1c 100644
>>> --- a/Documentation/devicetree/bindings/remoteproc/st,stm32-rproc.yaml
>>> +++ b/Documentation/devicetree/bindings/remoteproc/st,stm32-rproc.yaml
>>> @@ -96,6 +96,25 @@ properties:
>>>          3rd cell: register bitmask for the deep sleep bit
>>>      maxItems: 1
>>>  
>>> +  st,syscfg-m4-state:
>>> +    $ref: "/schemas/types.yaml#/definitions/phandle-array"
>>> +    description: |
>>> +      Reference to the tamp register which exposes the Cortex-M4 state.
>>> +        1st cell: phandle to syscon block
>>> +        2nd cell: register offset containing the Cortex-M4 state
>>> +        3rd cell: register bitmask for the Cortex-M4 state
>>> +    maxItems: 1
>>> +
>>> +  st,syscfg-rsc-tbl:
>>> +    $ref: "/schemas/types.yaml#/definitions/phandle-array"
>>> +    description: |
>>> +      Reference to the tamp register which references the Cortex-M4
>>> +      resource table address.
>>> +        1st cell: phandle to syscon block
>>> +        2nd cell: register offset containing the resource table address
>>> +        3rd cell: register bitmask for the resource table address
>>> +    maxItems: 1
>>
>> Why can't these be implied? You can lookup the tamp syscon by 
>> compatible.
> 
> I just made a copy/past of the  "st,syscfg-pdds" syscon description available in the same file [1]
>   
> I can provide a shorter descriptions, something like this:
> 
>    description: |
>      Reference to the tamp syscon register and bitmask which contains the Cortex-M4
>       resource table address.
>    maxItems: 1
> 
> Would this meet your expectations? If yes, I will also add in next version an extra patch to fix [1]
> 
> [1] https://elixir.bootlin.com/linux/v5.9-rc3/source/Documentation/devicetree/bindings/remoteproc/st,stm32-rproc.yaml#L90
> 
>>
>> Please add these to the example.
> 
> I will extend the example with these properties
> 
> Thanks,
> Arnaud
> 
>>
>>> +
>>>    st,auto-boot:
>>>      $ref: /schemas/types.yaml#/definitions/flag
>>>      description:
>>> -- 
>>> 2.17.1
>>>

Patch
diff mbox series

diff --git a/Documentation/devicetree/bindings/remoteproc/st,stm32-rproc.yaml b/Documentation/devicetree/bindings/remoteproc/st,stm32-rproc.yaml
index 4ffa25268fcc..e50957d86b1c 100644
--- a/Documentation/devicetree/bindings/remoteproc/st,stm32-rproc.yaml
+++ b/Documentation/devicetree/bindings/remoteproc/st,stm32-rproc.yaml
@@ -96,6 +96,25 @@  properties:
         3rd cell: register bitmask for the deep sleep bit
     maxItems: 1
 
+  st,syscfg-m4-state:
+    $ref: "/schemas/types.yaml#/definitions/phandle-array"
+    description: |
+      Reference to the tamp register which exposes the Cortex-M4 state.
+        1st cell: phandle to syscon block
+        2nd cell: register offset containing the Cortex-M4 state
+        3rd cell: register bitmask for the Cortex-M4 state
+    maxItems: 1
+
+  st,syscfg-rsc-tbl:
+    $ref: "/schemas/types.yaml#/definitions/phandle-array"
+    description: |
+      Reference to the tamp register which references the Cortex-M4
+      resource table address.
+        1st cell: phandle to syscon block
+        2nd cell: register offset containing the resource table address
+        3rd cell: register bitmask for the resource table address
+    maxItems: 1
+
   st,auto-boot:
     $ref: /schemas/types.yaml#/definitions/flag
     description: