Re: [PATCH 3/4] dt-bindings: power: reset: Add regmap support to the SYSCON reboot-mode bindings

[Rob Herring <robh@kernel.org>]

On Fri, Mar 06, 2020 at 04:03:40PM +0300, Sergey.Semin@baikalelectronics.ru wrote:
> From: Serge Semin <Sergey.Semin@baikalelectronics.ru>
> 
> Optional regmap property will be used to refer to a syscon-controller
> having a reboot tolerant register mapped.

NAK. It should simply be a child node of the 'syscon-controller'.

> 
> Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
> Signed-off-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
> Cc: Paul Burton <paulburton@kernel.org>
> Cc: Ralf Baechle <ralf@linux-mips.org>
> ---
>  .../bindings/power/reset/syscon-reboot-mode.yaml         | 9 ++++++---
>  1 file changed, 6 insertions(+), 3 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/power/reset/syscon-reboot-mode.yaml b/Documentation/devicetree/bindings/power/reset/syscon-reboot-mode.yaml
> index e09bb07b1abb..f47bf52ad983 100644
> --- a/Documentation/devicetree/bindings/power/reset/syscon-reboot-mode.yaml
> +++ b/Documentation/devicetree/bindings/power/reset/syscon-reboot-mode.yaml
> @@ -13,9 +13,8 @@ description: |
>    This driver gets reboot mode magic value from reboot-mode driver
>    and stores it in a SYSCON mapped register. Then the bootloader
>    can read it and take different action according to the magic
> -  value stored. The SYSCON mapped register is retrieved from the
> -  parental dt-node plus the offset. So the SYSCON reboot-mode node
> -  should be represented as a sub-node of a "syscon", "simple-mfd" node.
> +  value stored. The SYSCON mapped register is retrieved either from
> +  the parental dt-node or from a regmap phandle plus the offset.
>  
>  properties:
>    compatible:
> @@ -29,6 +28,10 @@ properties:
>      $ref: /schemas/types.yaml#/definitions/uint32
>      description: Offset in the register map for the mode register (in bytes).
>  
> +  regmap:
> +    $ref: /schemas/types.yaml#/definitions/phandle
> +    description: Phandle to the register map node.
> +
>  patternProperties:
>    "^mode-.+":
>      $ref: /schemas/types.yaml#/definitions/uint32
> -- 
> 2.25.1
>