The Renesas RZ/V2M External Power Sequence Controller (PWC)
IP is a multi-function device, and it's capable of:
* external power supply on/off sequence generation
* on/off signal generation for the LPDDR4 core power supply (LPVDD)
* key input signals processing
* general-purpose output pins

Add the corresponding dt-bindings.

Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---

v1->v2: I have dropped syscon, simple-mfd, regmap, offset, and the child nodes.
v2->v3: No change.
v3->v4: Moved file under Documentation/devicetree/bindings/soc/renesas,
        and changed $id accordingly. Rob, I have kept your Reviewed-by
        tag assuming you are still happy, please do jump in if you think
        that's not appropriate anymore.

 .../soc/renesas/renesas,rzv2m-pwc.yaml        | 56 +++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/renesas/renesas,rzv2m-pwc.yaml

diff --git a/Documentation/devicetree/bindings/soc/renesas/renesas,rzv2m-pwc.yaml b/Documentation/devicetree/bindings/soc/renesas/renesas,rzv2m-pwc.yaml
new file mode 100644
index 000000000000..12df33f58484
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/renesas/renesas,rzv2m-pwc.yaml
@@ -0,0 +1,56 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/renesas/renesas,rzv2m-pwc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas RZ/V2M External Power Sequence Controller (PWC)
+
+description: |+
+  The PWC IP found in the RZ/V2M family of chips comes with the below
+  capabilities
+    - external power supply on/off sequence generation
+    - on/off signal generation for the LPDDR4 core power supply (LPVDD)
+    - key input signals processing
+    - general-purpose output pins
+
+maintainers:
+  - Fabrizio Castro <fabrizio.castro.jz@renesas.com>
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - renesas,r9a09g011-pwc # RZ/V2M
+          - renesas,r9a09g055-pwc # RZ/V2MA
+      - const: renesas,rzv2m-pwc
+
+  reg:
+    maxItems: 1
+
+  gpio-controller: true
+
+  '#gpio-cells':
+    const: 2
+
+  renesas,rzv2m-pwc-power:
+    description: The PWC is used to control the system power supplies.
+    type: boolean
+
+required:
+  - compatible
+  - reg
+  - gpio-controller
+  - '#gpio-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    pwc: pwc@a3700000 {
+      compatible = "renesas,r9a09g011-pwc", "renesas,rzv2m-pwc";
+      reg = <0xa3700000 0x800>;
+      gpio-controller;
+      #gpio-cells = <2>;
+      renesas,rzv2m-pwc-power;
+    };
-- 
2.34.1

On Thu, 05 Jan 2023, Fabrizio Castro wrote:

> The Renesas RZ/V2M External Power Sequence Controller (PWC)
> IP is a multi-function device, and it's capable of:
> * external power supply on/off sequence generation
> * on/off signal generation for the LPDDR4 core power supply (LPVDD)
> * key input signals processing
> * general-purpose output pins

The subject line now needs changing.

This patch doesn't have anything to do with MFD.

> Add the corresponding dt-bindings.
> 
> Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
> Reviewed-by: Rob Herring <robh@kernel.org>
> ---
> 
> v1->v2: I have dropped syscon, simple-mfd, regmap, offset, and the child nodes.
> v2->v3: No change.
> v3->v4: Moved file under Documentation/devicetree/bindings/soc/renesas,
>         and changed $id accordingly. Rob, I have kept your Reviewed-by
>         tag assuming you are still happy, please do jump in if you think
>         that's not appropriate anymore.
> 
>  .../soc/renesas/renesas,rzv2m-pwc.yaml        | 56 +++++++++++++++++++
>  1 file changed, 56 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/soc/renesas/renesas,rzv2m-pwc.yaml

-- 
Lee Jones [李琼斯]

Hi Lee,

Thanks for your feedback!

> 
> On Thu, 05 Jan 2023, Fabrizio Castro wrote:
> 
> > The Renesas RZ/V2M External Power Sequence Controller (PWC)
> > IP is a multi-function device, and it's capable of:
> > * external power supply on/off sequence generation
> > * on/off signal generation for the LPDDR4 core power supply (LPVDD)
> > * key input signals processing
> > * general-purpose output pins
> 
> The subject line now needs changing.
> 
> This patch doesn't have anything to do with MFD.

Doh, you are absolutely right, I'll send a v5 to address that.

Thanks,
Fab

> 
> > Add the corresponding dt-bindings.
> >
> > Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
> > Reviewed-by: Rob Herring <robh@kernel.org>
> > ---
> >
> > v1->v2: I have dropped syscon, simple-mfd, regmap, offset, and the child
> nodes.
> > v2->v3: No change.
> > v3->v4: Moved file under Documentation/devicetree/bindings/soc/renesas,
> >         and changed $id accordingly. Rob, I have kept your Reviewed-by
> >         tag assuming you are still happy, please do jump in if you think
> >         that's not appropriate anymore.
> >
> >  .../soc/renesas/renesas,rzv2m-pwc.yaml        | 56 +++++++++++++++++++
> >  1 file changed, 56 insertions(+)
> >  create mode 100644
> Documentation/devicetree/bindings/soc/renesas/renesas,rzv2m-pwc.yaml
> 
> --
> Lee Jones [李琼斯]