[PATCH 0/2] dt-bindings: renesas,tpu: Improve and json-schema conversion

[PATCH 0/2] dt-bindings: renesas,tpu: Improve and json-schema conversion

[Geert Uytterhoeven]

	Hi all,

There are two different device tree bindings defined for the Renesas
Timer Pulse Unit:
  - one for using the TPU as a PWM controller (used on ARM), already
    using json-schema, and
  - a second one for using the TPU as a clock source (used on H8/300).
The first has already been converted to json-schema.

This series improves the former, and converts the latter to json-schema.
As both bindings using "renesas,tpu", both bindings are marked with the
appropriate "select" logic, to check for the presence respectively
absence of the "#pwm-cells" property.

Thanks for your comments!

Geert Uytterhoeven (2):
  dt-bindings: pwm: renesas,tpu-pwm: Improve json-schema
  dt-bindings: timer: renesas,tpu: Convert to json-schema

 .../bindings/pwm/renesas,tpu-pwm.yaml         | 29 +++++++++-
 .../devicetree/bindings/timer/renesas,tpu.txt | 21 -------
 .../bindings/timer/renesas,tpu.yaml           | 56 +++++++++++++++++++
 3 files changed, 84 insertions(+), 22 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/timer/renesas,tpu.txt
 create mode 100644 Documentation/devicetree/bindings/timer/renesas,tpu.yaml

-- 
2.25.1

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds

[PATCH 1/2] dt-bindings: pwm: renesas,tpu-pwm: Improve json-schema

[Geert Uytterhoeven]

  - Include the general PWM controller schema,
  - Make clocks, power-domains, and resets properties required.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
 .../bindings/pwm/renesas,tpu-pwm.yaml         | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/pwm/renesas,tpu-pwm.yaml b/Documentation/devicetree/bindings/pwm/renesas,tpu-pwm.yaml
index aa9a4570c9068226..3a072ee29815c695 100644
--- a/Documentation/devicetree/bindings/pwm/renesas,tpu-pwm.yaml
+++ b/Documentation/devicetree/bindings/pwm/renesas,tpu-pwm.yaml
@@ -58,8 +58,25 @@ required:
   - compatible
   - reg
   - '#pwm-cells'
+  - clocks
+  - power-domains
 
-additionalProperties: false
+allOf:
+  - $ref: pwm.yaml#
+
+  - if:
+      not:
+        properties:
+          compatible:
+            contains:
+              enum:
+                - renesas,tpu-r8a73a4
+                - renesas,tpu-r8a7740
+    then:
+      required:
+        - resets
+
+unevaluatedProperties: false
 
 examples:
   - |
-- 
2.25.1

Re: [PATCH 1/2] dt-bindings: pwm: renesas,tpu-pwm: Improve json-schema

[Rob Herring]

On Fri, May 07, 2021 at 10:25:12AM +0200, Geert Uytterhoeven wrote:
>   - Include the general PWM controller schema,
>   - Make clocks, power-domains, and resets properties required.
> 
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
>  .../bindings/pwm/renesas,tpu-pwm.yaml         | 19 ++++++++++++++++++-
>  1 file changed, 18 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/pwm/renesas,tpu-pwm.yaml b/Documentation/devicetree/bindings/pwm/renesas,tpu-pwm.yaml
> index aa9a4570c9068226..3a072ee29815c695 100644
> --- a/Documentation/devicetree/bindings/pwm/renesas,tpu-pwm.yaml
> +++ b/Documentation/devicetree/bindings/pwm/renesas,tpu-pwm.yaml
> @@ -58,8 +58,25 @@ required:
>    - compatible
>    - reg
>    - '#pwm-cells'
> +  - clocks
> +  - power-domains
>  
> -additionalProperties: false
> +allOf:
> +  - $ref: pwm.yaml#

This doesn't add any other properties, so you can keep 
'additionalProperties: false'. 

> +
> +  - if:
> +      not:
> +        properties:
> +          compatible:
> +            contains:
> +              enum:
> +                - renesas,tpu-r8a73a4
> +                - renesas,tpu-r8a7740
> +    then:
> +      required:
> +        - resets
> +
> +unevaluatedProperties: false
>  
>  examples:
>    - |
> -- 
> 2.25.1
> 

[PATCH 2/2] dt-bindings: timer: renesas,tpu: Convert to json-schema

[Geert Uytterhoeven]

Convert the Renesas H8/300 Timer Pulse Unit Device Tree binding
documentation to json-schema.

Correct clock-names, as "peripheral_clk" is the name of the supplier,
and all users use "fck".

Note that there are two different bindings for the TPU, both using
"renesas,tpu": this one for using the TPU as a clock source (used on
H8/300), and a second use for using the TPU as a PWM controller (used on
ARM).  To avoid conflicts, both bindings are marked with the appropriate
"select" logic, to check for the absence respectively presence of the
"#pwm-cells" property.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
I have listed Sato-san as the maintainer, as he wrote the original
driver and bindings.
Sato-san: Please scream if this is inappropriate ;-)
---
 .../bindings/pwm/renesas,tpu-pwm.yaml         | 10 ++++
 .../devicetree/bindings/timer/renesas,tpu.txt | 21 -------
 .../bindings/timer/renesas,tpu.yaml           | 56 +++++++++++++++++++
 3 files changed, 66 insertions(+), 21 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/timer/renesas,tpu.txt
 create mode 100644 Documentation/devicetree/bindings/timer/renesas,tpu.yaml

diff --git a/Documentation/devicetree/bindings/pwm/renesas,tpu-pwm.yaml b/Documentation/devicetree/bindings/pwm/renesas,tpu-pwm.yaml
index 3a072ee29815c695..f8bc8c5905daa14c 100644
--- a/Documentation/devicetree/bindings/pwm/renesas,tpu-pwm.yaml
+++ b/Documentation/devicetree/bindings/pwm/renesas,tpu-pwm.yaml
@@ -9,6 +9,16 @@ title: Renesas R-Car Timer Pulse Unit PWM Controller
 maintainers:
   - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
 
+select:
+  properties:
+    compatible:
+      contains:
+        const: renesas,tpu
+    '#pwm-cells': true
+  required:
+    - compatible
+    - '#pwm-cells'
+
 properties:
   compatible:
     items:
diff --git a/Documentation/devicetree/bindings/timer/renesas,tpu.txt b/Documentation/devicetree/bindings/timer/renesas,tpu.txt
deleted file mode 100644
index 1d46f9de4feb8a84..0000000000000000
--- a/Documentation/devicetree/bindings/timer/renesas,tpu.txt
+++ /dev/null
@@ -1,21 +0,0 @@
-* Renesas H8/300 Timer Pulse Unit
-
-The TPU is a 16bit timer/counter with configurable clock inputs and
-programmable compare match.
-This implementation support only cascade mode.
-
-Required Properties:
-
-  - compatible: must contain "renesas,tpu"
-  - reg: base address and length of the registers block in 2 channel.
-  - clocks: a list of phandle, one for each entry in clock-names.
-  - clock-names: must contain "peripheral_clk" for the functional clock.
-
-
-Example:
-	tpu: tpu@ffffe0 {
-		compatible = "renesas,tpu";
-		reg = <0xffffe0 16>, <0xfffff0 12>;
-		clocks = <&pclk>;
-		clock-names = "peripheral_clk";
-	};
diff --git a/Documentation/devicetree/bindings/timer/renesas,tpu.yaml b/Documentation/devicetree/bindings/timer/renesas,tpu.yaml
new file mode 100644
index 0000000000000000..01554dff23d8a954
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/renesas,tpu.yaml
@@ -0,0 +1,56 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/timer/renesas,tpu.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas H8/300 Timer Pulse Unit
+
+maintainers:
+  - Yoshinori Sato <ysato@users.sourceforge.jp>
+
+description:
+  The TPU is a 16bit timer/counter with configurable clock inputs and
+  programmable compare match.
+  This implementation supports only cascade mode.
+
+select:
+  properties:
+    compatible:
+      contains:
+        const: renesas,tpu
+    '#pwm-cells': false
+  required:
+    - compatible
+
+properties:
+  compatible:
+    const: renesas,tpu
+
+  reg:
+    items:
+      - description: First channel
+      - description: Second channel
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    const: fck
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+
+additionalProperties: false
+
+examples:
+  - |
+    tpu: tpu@ffffe0 {
+            compatible = "renesas,tpu";
+            reg = <0xffffe0 16>, <0xfffff0 12>;
+            clocks = <&pclk>;
+            clock-names = "fck";
+    };
-- 
2.25.1

Re: [PATCH 2/2] dt-bindings: timer: renesas,tpu: Convert to json-schema

[Rob Herring]

On Fri, May 07, 2021 at 10:25:13AM +0200, Geert Uytterhoeven wrote:
> Convert the Renesas H8/300 Timer Pulse Unit Device Tree binding
> documentation to json-schema.
> 
> Correct clock-names, as "peripheral_clk" is the name of the supplier,
> and all users use "fck".
> 
> Note that there are two different bindings for the TPU, both using
> "renesas,tpu": this one for using the TPU as a clock source (used on
> H8/300), and a second use for using the TPU as a PWM controller (used on
> ARM).  To avoid conflicts, both bindings are marked with the appropriate
> "select" logic, to check for the absence respectively presence of the
> "#pwm-cells" property.
> 
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
> I have listed Sato-san as the maintainer, as he wrote the original
> driver and bindings.
> Sato-san: Please scream if this is inappropriate ;-)
> ---
>  .../bindings/pwm/renesas,tpu-pwm.yaml         | 10 ++++
>  .../devicetree/bindings/timer/renesas,tpu.txt | 21 -------
>  .../bindings/timer/renesas,tpu.yaml           | 56 +++++++++++++++++++
>  3 files changed, 66 insertions(+), 21 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/timer/renesas,tpu.txt
>  create mode 100644 Documentation/devicetree/bindings/timer/renesas,tpu.yaml
> 
> diff --git a/Documentation/devicetree/bindings/pwm/renesas,tpu-pwm.yaml b/Documentation/devicetree/bindings/pwm/renesas,tpu-pwm.yaml
> index 3a072ee29815c695..f8bc8c5905daa14c 100644
> --- a/Documentation/devicetree/bindings/pwm/renesas,tpu-pwm.yaml
> +++ b/Documentation/devicetree/bindings/pwm/renesas,tpu-pwm.yaml
> @@ -9,6 +9,16 @@ title: Renesas R-Car Timer Pulse Unit PWM Controller
>  maintainers:
>    - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
>  
> +select:
> +  properties:
> +    compatible:
> +      contains:
> +        const: renesas,tpu
> +    '#pwm-cells': true

You can drop this line. The schema is still true if not present which is 
why 'required' is needed.

With that,

Reviewed-by: Rob Herring <robh@kernel.org>

> +  required:
> +    - compatible
> +    - '#pwm-cells'
> +
>  properties:
>    compatible:
>      items:
> diff --git a/Documentation/devicetree/bindings/timer/renesas,tpu.txt b/Documentation/devicetree/bindings/timer/renesas,tpu.txt
> deleted file mode 100644
> index 1d46f9de4feb8a84..0000000000000000
> --- a/Documentation/devicetree/bindings/timer/renesas,tpu.txt
> +++ /dev/null
> @@ -1,21 +0,0 @@
> -* Renesas H8/300 Timer Pulse Unit
> -
> -The TPU is a 16bit timer/counter with configurable clock inputs and
> -programmable compare match.
> -This implementation support only cascade mode.
> -
> -Required Properties:
> -
> -  - compatible: must contain "renesas,tpu"
> -  - reg: base address and length of the registers block in 2 channel.
> -  - clocks: a list of phandle, one for each entry in clock-names.
> -  - clock-names: must contain "peripheral_clk" for the functional clock.
> -
> -
> -Example:
> -	tpu: tpu@ffffe0 {
> -		compatible = "renesas,tpu";
> -		reg = <0xffffe0 16>, <0xfffff0 12>;
> -		clocks = <&pclk>;
> -		clock-names = "peripheral_clk";
> -	};
> diff --git a/Documentation/devicetree/bindings/timer/renesas,tpu.yaml b/Documentation/devicetree/bindings/timer/renesas,tpu.yaml
> new file mode 100644
> index 0000000000000000..01554dff23d8a954
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/timer/renesas,tpu.yaml
> @@ -0,0 +1,56 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/timer/renesas,tpu.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Renesas H8/300 Timer Pulse Unit
> +
> +maintainers:
> +  - Yoshinori Sato <ysato@users.sourceforge.jp>
> +
> +description:
> +  The TPU is a 16bit timer/counter with configurable clock inputs and
> +  programmable compare match.
> +  This implementation supports only cascade mode.
> +
> +select:
> +  properties:
> +    compatible:
> +      contains:
> +        const: renesas,tpu
> +    '#pwm-cells': false
> +  required:
> +    - compatible
> +
> +properties:
> +  compatible:
> +    const: renesas,tpu
> +
> +  reg:
> +    items:
> +      - description: First channel
> +      - description: Second channel
> +
> +  clocks:
> +    maxItems: 1
> +
> +  clock-names:
> +    const: fck
> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - clock-names
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    tpu: tpu@ffffe0 {
> +            compatible = "renesas,tpu";
> +            reg = <0xffffe0 16>, <0xfffff0 12>;
> +            clocks = <&pclk>;
> +            clock-names = "fck";
> +    };
> -- 
> 2.25.1
>