mbox series

[0/2] Add new IPCC mailbox to support the coprocessor detach on some stm32mp15x boards

Message ID 20210614164940.27153-1-arnaud.pouliquen@foss.st.com (mailing list archive)
Headers show
Series Add new IPCC mailbox to support the coprocessor detach on some stm32mp15x boards | expand

Message

Arnaud Pouliquen June 14, 2021, 4:49 p.m. UTC 
Purpose:
  Add the IPCC channel 4 as "detach" mailbox to support the remoteproc the feature added in [1].

  The enable of this feature is a design choice. As consequence, the new mbox is declared
  only for stm32mp157c-ed1 & stm32mp15x-dkx boards maintained by ST Microelectronics.

Aim:
  Allow to send to the remote processor a HW signal on IPCC channel 4 when user space requests
  to detach the main processor from the remote processor (e.g. a reboot of the  Linux processor
  on a crash).

[1] https://patchwork.ozlabs.org/project/devicetree-bindings/cover/20210331073347.8293-1-arnaud.pouliquen@foss.st.com/

Arnaud Pouliquen (2):
  ARM: dts: stm32: Add coprocessor detach mbox on stm32mp157c-ed1 board
  ARM: dts: stm32: Add coprocessor detach mbox on stm32mp15x-dkx boards

 arch/arm/boot/dts/stm32mp157c-ed1.dts  | 4 ++--
 arch/arm/boot/dts/stm32mp15xx-dkx.dtsi | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

Comments

Alexandre TORGUE July 15, 2021, 3:16 p.m. UTC | #1 
Hi Arnaud

On 6/14/21 6:49 PM, Arnaud Pouliquen wrote:
> Purpose:
>    Add the IPCC channel 4 as "detach" mailbox to support the remoteproc the feature added in [1].
> 
>    The enable of this feature is a design choice. As consequence, the new mbox is declared
>    only for stm32mp157c-ed1 & stm32mp15x-dkx boards maintained by ST Microelectronics.
> 
> Aim:
>    Allow to send to the remote processor a HW signal on IPCC channel 4 when user space requests
>    to detach the main processor from the remote processor (e.g. a reboot of the  Linux processor
>    on a crash).
> 
> [1] https://patchwork.ozlabs.org/project/devicetree-bindings/cover/20210331073347.8293-1-arnaud.pouliquen@foss.st.com/
> 
> Arnaud Pouliquen (2):
>    ARM: dts: stm32: Add coprocessor detach mbox on stm32mp157c-ed1 board
>    ARM: dts: stm32: Add coprocessor detach mbox on stm32mp15x-dkx boards
> 
>   arch/arm/boot/dts/stm32mp157c-ed1.dts  | 4 ++--
>   arch/arm/boot/dts/stm32mp15xx-dkx.dtsi | 4 ++--
>   2 files changed, 4 insertions(+), 4 deletions(-)
> 

Series Applied on stm32-next;

thanks
Alex