[PATCH 0/5] dt-bindings: timer: AT91 convert to YAML

[PATCH 0/5] dt-bindings: timer: AT91 convert to YAML

[Claudiu Beznea]

Hi,

Series converts AT91 timers DT bindings to YAML. Along with it the
atmel,at91rm9200-wdt has been converted and introduced in this series
as it is referenced by atmel,at91rm9200-st.

Thank you,
Claudiu Beznea

Claudiu Beznea (5):
  dt-bindings: timer: atmel,at91sam9260-pit: convert to yaml
  ARM: dts: at91: sama7g5: keep only microchip,sam9x60-pit64b compatible
    for pit64b
  dt-bindings: timer: microchip,sam9x60-pit64b: convert to yaml
  dt-bindings: watchdog: atmel,at91rm9200-wdt: convert to yaml
  dt-bindings: timer: atmel,at91rm9200-st: convert to yaml

 .../devicetree/bindings/arm/atmel-sysregs.txt | 21 ------
 .../bindings/timer/atmel,at91rm9200-st.yaml   | 66 +++++++++++++++++++
 .../bindings/timer/atmel,at91sam9260-pit.yaml | 51 ++++++++++++++
 .../timer/microchip,sam9x60-pit64b.yaml       | 56 ++++++++++++++++
 .../watchdog/atmel,at91rm9200-wdt.yaml        | 29 ++++++++
 .../watchdog/atmel-at91rm9200-wdt.txt         |  9 ---
 arch/arm/boot/dts/sama7g5.dtsi                |  4 +-
 7 files changed, 204 insertions(+), 32 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/timer/atmel,at91rm9200-st.yaml
 create mode 100644 Documentation/devicetree/bindings/timer/atmel,at91sam9260-pit.yaml
 create mode 100644 Documentation/devicetree/bindings/timer/microchip,sam9x60-pit64b.yaml
 create mode 100644 Documentation/devicetree/bindings/watchdog/atmel,at91rm9200-wdt.yaml
 delete mode 100644 Documentation/devicetree/bindings/watchdog/atmel-at91rm9200-wdt.txt

-- 
2.34.1

[PATCH 1/5] dt-bindings: timer: atmel,at91sam9260-pit: convert to yaml

[Claudiu Beznea]

Convert Atmel PIT to YAML. Along with it clock binding has been added as
the driver enables it to ensure proper hardware functionality.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
---
 .../devicetree/bindings/arm/atmel-sysregs.txt |  6 ---
 .../bindings/timer/atmel,at91sam9260-pit.yaml | 51 +++++++++++++++++++
 2 files changed, 51 insertions(+), 6 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/timer/atmel,at91sam9260-pit.yaml

diff --git a/Documentation/devicetree/bindings/arm/atmel-sysregs.txt b/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
index 67a66bf74895..7024839c5da2 100644
--- a/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
+++ b/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
@@ -4,12 +4,6 @@ Chipid required properties:
 - compatible: Should be "atmel,sama5d2-chipid" or "microchip,sama7g5-chipid"
 - reg : Should contain registers location and length
 
-PIT Timer required properties:
-- compatible: Should be "atmel,at91sam9260-pit"
-- reg: Should contain registers location and length
-- interrupts: Should contain interrupt for the PIT which is the IRQ line
-  shared across all System Controller members.
-
 PIT64B Timer required properties:
 - compatible: Should be "microchip,sam9x60-pit64b"
 - reg: Should contain registers location and length
diff --git a/Documentation/devicetree/bindings/timer/atmel,at91sam9260-pit.yaml b/Documentation/devicetree/bindings/timer/atmel,at91sam9260-pit.yaml
new file mode 100644
index 000000000000..f304cd68acd5
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/atmel,at91sam9260-pit.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/timer/atmel,at91sam9260-pit.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Atmel Periodic Interval Timer (PIT)
+
+maintainers:
+  - Claudiu Beznea <claudiu.beznea@microchip.com>
+
+description:
+  Atmel periodic interval timer provides the operating system’s scheduler
+  interrupt. It is designed to offer maximum accuracy and efficient management,
+  even for systems with long response time.
+
+properties:
+  compatible:
+    const: atmel,at91sam9260-pit
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    description:
+      Contain interrupt for the PIT which is the IRQ line shared across all
+      System Controller members.
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/at91.h>
+
+    pit: timer@fffffe40 {
+        compatible = "atmel,at91sam9260-pit";
+        reg = <0xfffffe40 0x10>;
+        interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
+        clocks = <&pmc PMC_TYPE_CORE PMC_MCK>;
+    };
+...
-- 
2.34.1

Re: [PATCH 1/5] dt-bindings: timer: atmel,at91sam9260-pit: convert to yaml

[Conor Dooley]

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On Thu, May 25, 2023 at 03:55:58PM +0300, Claudiu Beznea wrote:
> Convert Atmel PIT to YAML. Along with it clock binding has been added as
> the driver enables it to ensure proper hardware functionality.
> 
> Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
> ---
>  .../devicetree/bindings/arm/atmel-sysregs.txt |  6 ---
>  .../bindings/timer/atmel,at91sam9260-pit.yaml | 51 +++++++++++++++++++
>  2 files changed, 51 insertions(+), 6 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/timer/atmel,at91sam9260-pit.yaml
> 
> diff --git a/Documentation/devicetree/bindings/arm/atmel-sysregs.txt b/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
> index 67a66bf74895..7024839c5da2 100644
> --- a/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
> +++ b/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
> @@ -4,12 +4,6 @@ Chipid required properties:
>  - compatible: Should be "atmel,sama5d2-chipid" or "microchip,sama7g5-chipid"
>  - reg : Should contain registers location and length
>  
> -PIT Timer required properties:
> -- compatible: Should be "atmel,at91sam9260-pit"
> -- reg: Should contain registers location and length
> -- interrupts: Should contain interrupt for the PIT which is the IRQ line
> -  shared across all System Controller members.
> -
>  PIT64B Timer required properties:
>  - compatible: Should be "microchip,sam9x60-pit64b"
>  - reg: Should contain registers location and length
> diff --git a/Documentation/devicetree/bindings/timer/atmel,at91sam9260-pit.yaml b/Documentation/devicetree/bindings/timer/atmel,at91sam9260-pit.yaml
> new file mode 100644
> index 000000000000..f304cd68acd5
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/timer/atmel,at91sam9260-pit.yaml
> @@ -0,0 +1,51 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/timer/atmel,at91sam9260-pit.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Atmel Periodic Interval Timer (PIT)
> +
> +maintainers:
> +  - Claudiu Beznea <claudiu.beznea@microchip.com>
> +
> +description:
> +  Atmel periodic interval timer provides the operating system’s scheduler
> +  interrupt. It is designed to offer maximum accuracy and efficient management,
> +  even for systems with long response time.
> +
> +properties:
> +  compatible:
> +    const: atmel,at91sam9260-pit
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    description:
> +      Contain interrupt for the PIT which is the IRQ line shared across all
> +      System Controller members.
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - clocks
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/at91.h>
> +
> +    pit: timer@fffffe40 {
> +        compatible = "atmel,at91sam9260-pit";
> +        reg = <0xfffffe40 0x10>;
> +        interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;

make dt_binding_check W=1 -j 30 DT_SCHEMA_FILES=atmel,at91sam9260-pit.yaml
  LINT    Documentation/devicetree/bindings
  DTEX    Documentation/devicetree/bindings/timer/atmel,at91sam9260-pit.example.dts
  CHKDT   Documentation/devicetree/bindings/processed-schema.json
  SCHEMA  Documentation/devicetree/bindings/processed-schema.json
  DTC_CHK Documentation/devicetree/bindings/timer/atmel,at91sam9260-pit.example.dtb
Error: Documentation/devicetree/bindings/timer/atmel,at91sam9260-pit.example.dts:26.29-30 syntax error
FATAL ERROR: Unable to parse input tree
make[1]: *** [scripts/Makefile.lib:419: Documentation/devicetree/bindings/timer/atmel,at91sam9260-pit.example.dtb] Error 1
make: *** [Makefile:1512: dt_binding_check] Error 2

Think you're missing the header for IRQ_TYPE_LEVEL_HIGH

> +        clocks = <&pmc PMC_TYPE_CORE PMC_MCK>;
> +    };
> +...
> -- 
> 2.34.1
> 

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Re: [PATCH 1/5] dt-bindings: timer: atmel,at91sam9260-pit: convert to yaml

[Claudiu.Beznea]

On 25.05.2023 20:10, Conor Dooley wrote:
> On Thu, May 25, 2023 at 03:55:58PM +0300, Claudiu Beznea wrote:
>> Convert Atmel PIT to YAML. Along with it clock binding has been added as
>> the driver enables it to ensure proper hardware functionality.
>>
>> Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
>> ---
>>  .../devicetree/bindings/arm/atmel-sysregs.txt |  6 ---
>>  .../bindings/timer/atmel,at91sam9260-pit.yaml | 51 +++++++++++++++++++
>>  2 files changed, 51 insertions(+), 6 deletions(-)
>>  create mode 100644 Documentation/devicetree/bindings/timer/atmel,at91sam9260-pit.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/arm/atmel-sysregs.txt b/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
>> index 67a66bf74895..7024839c5da2 100644
>> --- a/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
>> +++ b/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
>> @@ -4,12 +4,6 @@ Chipid required properties:
>>  - compatible: Should be "atmel,sama5d2-chipid" or "microchip,sama7g5-chipid"
>>  - reg : Should contain registers location and length
>>  
>> -PIT Timer required properties:
>> -- compatible: Should be "atmel,at91sam9260-pit"
>> -- reg: Should contain registers location and length
>> -- interrupts: Should contain interrupt for the PIT which is the IRQ line
>> -  shared across all System Controller members.
>> -
>>  PIT64B Timer required properties:
>>  - compatible: Should be "microchip,sam9x60-pit64b"
>>  - reg: Should contain registers location and length
>> diff --git a/Documentation/devicetree/bindings/timer/atmel,at91sam9260-pit.yaml b/Documentation/devicetree/bindings/timer/atmel,at91sam9260-pit.yaml
>> new file mode 100644
>> index 000000000000..f304cd68acd5
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/timer/atmel,at91sam9260-pit.yaml
>> @@ -0,0 +1,51 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/timer/atmel,at91sam9260-pit.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Atmel Periodic Interval Timer (PIT)
>> +
>> +maintainers:
>> +  - Claudiu Beznea <claudiu.beznea@microchip.com>
>> +
>> +description:
>> +  Atmel periodic interval timer provides the operating system’s scheduler
>> +  interrupt. It is designed to offer maximum accuracy and efficient management,
>> +  even for systems with long response time.
>> +
>> +properties:
>> +  compatible:
>> +    const: atmel,at91sam9260-pit
>> +
>> +  reg:
>> +    maxItems: 1
>> +
>> +  interrupts:
>> +    description:
>> +      Contain interrupt for the PIT which is the IRQ line shared across all
>> +      System Controller members.
>> +    maxItems: 1
>> +
>> +  clocks:
>> +    maxItems: 1
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - interrupts
>> +  - clocks
>> +
>> +additionalProperties: false
>> +
>> +examples:
>> +  - |
>> +    #include <dt-bindings/clock/at91.h>
>> +
>> +    pit: timer@fffffe40 {
>> +        compatible = "atmel,at91sam9260-pit";
>> +        reg = <0xfffffe40 0x10>;
>> +        interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
> make dt_binding_check W=1 -j 30 DT_SCHEMA_FILES=atmel,at91sam9260-pit.yaml
>   LINT    Documentation/devicetree/bindings
>   DTEX    Documentation/devicetree/bindings/timer/atmel,at91sam9260-pit.example.dts
>   CHKDT   Documentation/devicetree/bindings/processed-schema.json
>   SCHEMA  Documentation/devicetree/bindings/processed-schema.json
>   DTC_CHK Documentation/devicetree/bindings/timer/atmel,at91sam9260-pit.example.dtb
> Error: Documentation/devicetree/bindings/timer/atmel,at91sam9260-pit.example.dts:26.29-30 syntax error
> FATAL ERROR: Unable to parse input tree
> make[1]: *** [scripts/Makefile.lib:419: Documentation/devicetree/bindings/timer/atmel,at91sam9260-pit.example.dtb] Error 1
> make: *** [Makefile:1512: dt_binding_check] Error 2
> 
> Think you're missing the header for IRQ_TYPE_LEVEL_HIGH
> 

Well, I messed this series... I had the impression I've tested all these.
Sorry for the noise.

Re: [PATCH 1/5] dt-bindings: timer: atmel,at91sam9260-pit: convert to yaml

[Rob Herring]

On Thu, 25 May 2023 15:55:58 +0300, Claudiu Beznea wrote:
> Convert Atmel PIT to YAML. Along with it clock binding has been added as
> the driver enables it to ensure proper hardware functionality.
> 
> Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
> ---
>  .../devicetree/bindings/arm/atmel-sysregs.txt |  6 ---
>  .../bindings/timer/atmel,at91sam9260-pit.yaml | 51 +++++++++++++++++++
>  2 files changed, 51 insertions(+), 6 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/timer/atmel,at91sam9260-pit.yaml
> 

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:

dtschema/dtc warnings/errors:
Error: Documentation/devicetree/bindings/timer/atmel,at91sam9260-pit.example.dts:29.29-30 syntax error
FATAL ERROR: Unable to parse input tree
make[1]: *** [scripts/Makefile.lib:419: Documentation/devicetree/bindings/timer/atmel,at91sam9260-pit.example.dtb] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:1512: dt_binding_check] Error 2

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20230525125602.640855-2-claudiu.beznea@microchip.com

The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.

[PATCH 2/5] ARM: dts: at91: sama7g5: keep only microchip,sam9x60-pit64b compatible for pit64b

[Claudiu Beznea]

SAM9X60 and SAMA7G5 PIT64Bs are 1 to 1 compatible. Thus, there is no
need for specific compatible string on SAMA7G5.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
---
 arch/arm/boot/dts/sama7g5.dtsi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/sama7g5.dtsi b/arch/arm/boot/dts/sama7g5.dtsi
index 886b6209a71e..500b00508621 100644
--- a/arch/arm/boot/dts/sama7g5.dtsi
+++ b/arch/arm/boot/dts/sama7g5.dtsi
@@ -610,7 +610,7 @@ eic: interrupt-controller@e1628000 {
 		};
 
 		pit64b0: timer@e1800000 {
-			compatible = "microchip,sama7g5-pit64b", "microchip,sam9x60-pit64b";
+			compatible = "microchip,sam9x60-pit64b";
 			reg = <0xe1800000 0x4000>;
 			interrupts = <GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>;
 			clocks = <&pmc PMC_TYPE_PERIPHERAL 70>, <&pmc PMC_TYPE_GCK 70>;
@@ -618,7 +618,7 @@ pit64b0: timer@e1800000 {
 		};
 
 		pit64b1: timer@e1804000 {
-			compatible = "microchip,sama7g5-pit64b", "microchip,sam9x60-pit64b";
+			compatible = "microchip,sam9x60-pit64b";
 			reg = <0xe1804000 0x4000>;
 			interrupts = <GIC_SPI 71 IRQ_TYPE_LEVEL_HIGH>;
 			clocks = <&pmc PMC_TYPE_PERIPHERAL 71>, <&pmc PMC_TYPE_GCK 71>;
-- 
2.34.1

[PATCH 3/5] dt-bindings: timer: microchip,sam9x60-pit64b: convert to yaml

[Claudiu Beznea]

Convert Microchip PIT64B to YAML. Along with it clock-names binding has
been added as the driver needs it to get PIT64B clocks.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
---
 .../devicetree/bindings/arm/atmel-sysregs.txt |  6 --
 .../timer/microchip,sam9x60-pit64b.yaml       | 56 +++++++++++++++++++
 2 files changed, 56 insertions(+), 6 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/timer/microchip,sam9x60-pit64b.yaml

diff --git a/Documentation/devicetree/bindings/arm/atmel-sysregs.txt b/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
index 7024839c5da2..54d3f586403e 100644
--- a/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
+++ b/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
@@ -4,12 +4,6 @@ Chipid required properties:
 - compatible: Should be "atmel,sama5d2-chipid" or "microchip,sama7g5-chipid"
 - reg : Should contain registers location and length
 
-PIT64B Timer required properties:
-- compatible: Should be "microchip,sam9x60-pit64b"
-- reg: Should contain registers location and length
-- interrupts: Should contain interrupt for PIT64B timer
-- clocks: Should contain the available clock sources for PIT64B timer.
-
 System Timer (ST) required properties:
 - compatible: Should be "atmel,at91rm9200-st", "syscon", "simple-mfd"
 - reg: Should contain registers location and length
diff --git a/Documentation/devicetree/bindings/timer/microchip,sam9x60-pit64b.yaml b/Documentation/devicetree/bindings/timer/microchip,sam9x60-pit64b.yaml
new file mode 100644
index 000000000000..9378eca38138
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/microchip,sam9x60-pit64b.yaml
@@ -0,0 +1,56 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/timer/microchip,sam9x60-pit64b.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Microchip 64-bit Periodic Interval Timer (PIT64B)
+
+maintainers:
+  - Claudiu Beznea <claudiu.beznea@microchip.com>
+
+description:
+  The 64-bit periodic interval timer provides the operating system scheduler
+  interrupt. It is designed to offer maximum accuracy and efficient management,
+  even for systems with long response times.
+
+properties:
+  compatible:
+    const: microchip,sam9x60-pit64b
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 2
+
+  clock-names:
+    items:
+      - const: pclk
+      - const: gclk
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/at91.h>
+
+    pit64b: timer@f0028000 {
+        compatible = "microchip,sam9x60-pit64b";
+        reg = <0xf0028000 0x100>;
+        interrupts = <37 IRQ_TYPE_LEVEL_HIGH 7>;
+        clocks = <&pmc PMC_TYPE_PERIPHERAL 37>, <&pmc PMC_TYPE_GCK 37>;
+        clock-names = "pclk", "gclk";
+    };
+
+...
-- 
2.34.1

Re: [PATCH 3/5] dt-bindings: timer: microchip,sam9x60-pit64b: convert to yaml

[Conor Dooley]

[-- Attachment #1: Type: text/plain, Size: 3675 bytes --]

On Thu, May 25, 2023 at 03:56:00PM +0300, Claudiu Beznea wrote:
> Convert Microchip PIT64B to YAML. Along with it clock-names binding has
> been added as the driver needs it to get PIT64B clocks.

I don't think both of these PIT things need to have different binding
files. 90% of it is the same, just the clock-names/number - so you can
combine the two into one file with an
allOf:
  - if:
     property:
       compatible:
         contains:
	   const: foo
    then:

    else:

type of construct.
Gimmie a shout tomorrow if you need a hand w/ it.

Thanks,
Conor.

> Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
> ---
>  .../devicetree/bindings/arm/atmel-sysregs.txt |  6 --
>  .../timer/microchip,sam9x60-pit64b.yaml       | 56 +++++++++++++++++++
>  2 files changed, 56 insertions(+), 6 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/timer/microchip,sam9x60-pit64b.yaml
> 
> diff --git a/Documentation/devicetree/bindings/arm/atmel-sysregs.txt b/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
> index 7024839c5da2..54d3f586403e 100644
> --- a/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
> +++ b/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
> @@ -4,12 +4,6 @@ Chipid required properties:
>  - compatible: Should be "atmel,sama5d2-chipid" or "microchip,sama7g5-chipid"
>  - reg : Should contain registers location and length
>  
> -PIT64B Timer required properties:
> -- compatible: Should be "microchip,sam9x60-pit64b"
> -- reg: Should contain registers location and length
> -- interrupts: Should contain interrupt for PIT64B timer
> -- clocks: Should contain the available clock sources for PIT64B timer.
> -
>  System Timer (ST) required properties:
>  - compatible: Should be "atmel,at91rm9200-st", "syscon", "simple-mfd"
>  - reg: Should contain registers location and length
> diff --git a/Documentation/devicetree/bindings/timer/microchip,sam9x60-pit64b.yaml b/Documentation/devicetree/bindings/timer/microchip,sam9x60-pit64b.yaml
> new file mode 100644
> index 000000000000..9378eca38138
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/timer/microchip,sam9x60-pit64b.yaml
> @@ -0,0 +1,56 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/timer/microchip,sam9x60-pit64b.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Microchip 64-bit Periodic Interval Timer (PIT64B)
> +
> +maintainers:
> +  - Claudiu Beznea <claudiu.beznea@microchip.com>
> +
> +description:
> +  The 64-bit periodic interval timer provides the operating system scheduler
> +  interrupt. It is designed to offer maximum accuracy and efficient management,
> +  even for systems with long response times.
> +
> +properties:
> +  compatible:
> +    const: microchip,sam9x60-pit64b
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 2
> +
> +  clock-names:
> +    items:
> +      - const: pclk
> +      - const: gclk
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - clocks
> +  - clock-names
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/at91.h>
> +
> +    pit64b: timer@f0028000 {
> +        compatible = "microchip,sam9x60-pit64b";
> +        reg = <0xf0028000 0x100>;
> +        interrupts = <37 IRQ_TYPE_LEVEL_HIGH 7>;
> +        clocks = <&pmc PMC_TYPE_PERIPHERAL 37>, <&pmc PMC_TYPE_GCK 37>;
> +        clock-names = "pclk", "gclk";
> +    };
> +
> +...
> -- 
> 2.34.1
> 

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Re: [PATCH 3/5] dt-bindings: timer: microchip,sam9x60-pit64b: convert to yaml

[Claudiu.Beznea]

On 25.05.2023 20:14, Conor Dooley wrote:
>> Convert Microchip PIT64B to YAML. Along with it clock-names binding has
>> been added as the driver needs it to get PIT64B clocks.
> I don't think both of these PIT things need to have different binding
> files. 90% of it is the same, just the clock-names/number - so you can

But these are different hardware blocks with different functionalities and
different drivers.

> combine the two into one file with an

Re: [PATCH 3/5] dt-bindings: timer: microchip,sam9x60-pit64b: convert to yaml

[Conor Dooley]

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Hey Claudiu,

On Fri, May 26, 2023 at 04:47:28AM +0000, Claudiu.Beznea@microchip.com wrote:
> On 25.05.2023 20:14, Conor Dooley wrote:
> >> Convert Microchip PIT64B to YAML. Along with it clock-names binding has
> >> been added as the driver needs it to get PIT64B clocks.
> > I don't think both of these PIT things need to have different binding
> > files. 90% of it is the same, just the clock-names/number - so you can
> 
> But these are different hardware blocks with different functionalities and
> different drivers.

Having different drivers doesn't preclude having them in the same
binding provided the function/description etc are more or less
identical. I was confused by:

+description:
+  The 64-bit periodic interval timer provides the operating system scheduler
+  interrupt. It is designed to offer maximum accuracy and efficient management,
+  even for systems with long response times.

+description:
+  Atmel periodic interval timer provides the operating system’s scheduler
+  interrupt. It is designed to offer maximum accuracy and efficient management,
+  even for systems with long response time.

Those seemed like they do the same thing to me!

Cheers,
Conor

> 
> > combine the two into one file with an
> 

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Re: [PATCH 3/5] dt-bindings: timer: microchip,sam9x60-pit64b: convert to yaml

[Claudiu.Beznea]

On 26.05.2023 09:23, Conor Dooley wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> Hey Claudiu,
> 
> On Fri, May 26, 2023 at 04:47:28AM +0000, Claudiu.Beznea@microchip.com wrote:
>> On 25.05.2023 20:14, Conor Dooley wrote:
>>>> Convert Microchip PIT64B to YAML. Along with it clock-names binding has
>>>> been added as the driver needs it to get PIT64B clocks.
>>> I don't think both of these PIT things need to have different binding
>>> files. 90% of it is the same, just the clock-names/number - so you can
>>
>> But these are different hardware blocks with different functionalities and
>> different drivers.
> 
> Having different drivers doesn't preclude having them in the same
> binding provided the function/description etc are more or less
> identical. I was confused by:
> 
> +description:
> +  The 64-bit periodic interval timer provides the operating system scheduler
> +  interrupt. It is designed to offer maximum accuracy and efficient management,
> +  even for systems with long response times.
> 
> +description:
> +  Atmel periodic interval timer provides the operating system’s scheduler
> +  interrupt. It is designed to offer maximum accuracy and efficient management,
> +  even for systems with long response time.
> 
> Those seemed like they do the same thing to me!

They do the same thing, they are timers... But the way they do it (from
hardware perspective) is totally different. With this would you still
prefer to have them merged?

Thank you,
Claudiu

> 
> Cheers,
> Conor
> 
>>
>>> combine the two into one file with an
>>
>>
>> _______________________________________________
>> linux-arm-kernel mailing list
>> linux-arm-kernel@lists.infradead.org
>> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Re: [PATCH 3/5] dt-bindings: timer: microchip,sam9x60-pit64b: convert to yaml

[Conor Dooley]

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On Fri, May 26, 2023 at 06:41:39AM +0000, Claudiu.Beznea@microchip.com wrote:
> On 26.05.2023 09:23, Conor Dooley wrote:
> > On Fri, May 26, 2023 at 04:47:28AM +0000, Claudiu.Beznea@microchip.com wrote:
> >> On 25.05.2023 20:14, Conor Dooley wrote:
> >>>> Convert Microchip PIT64B to YAML. Along with it clock-names binding has
> >>>> been added as the driver needs it to get PIT64B clocks.
> >>> I don't think both of these PIT things need to have different binding
> >>> files. 90% of it is the same, just the clock-names/number - so you can
> >>
> >> But these are different hardware blocks with different functionalities and
> >> different drivers.
> > 
> > Having different drivers doesn't preclude having them in the same
> > binding provided the function/description etc are more or less
> > identical. I was confused by:
> > 
> > +description:
> > +  The 64-bit periodic interval timer provides the operating system scheduler
> > +  interrupt. It is designed to offer maximum accuracy and efficient management,
> > +  even for systems with long response times.
> > 
> > +description:
> > +  Atmel periodic interval timer provides the operating system’s scheduler
> > +  interrupt. It is designed to offer maximum accuracy and efficient management,
> > +  even for systems with long response time.
> > 
> > Those seemed like they do the same thing to me!
> 
> They do the same thing, they are timers... But the way they do it (from
> hardware perspective) is totally different. With this would you still
> prefer to have them merged?

Yeah, one binding would be my preference.

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Re: [PATCH 3/5] dt-bindings: timer: microchip,sam9x60-pit64b: convert to yaml

[Rob Herring]

On Fri, May 26, 2023 at 08:55:39AM +0100, Conor Dooley wrote:
> On Fri, May 26, 2023 at 06:41:39AM +0000, Claudiu.Beznea@microchip.com wrote:
> > On 26.05.2023 09:23, Conor Dooley wrote:
> > > On Fri, May 26, 2023 at 04:47:28AM +0000, Claudiu.Beznea@microchip.com wrote:
> > >> On 25.05.2023 20:14, Conor Dooley wrote:
> > >>>> Convert Microchip PIT64B to YAML. Along with it clock-names binding has
> > >>>> been added as the driver needs it to get PIT64B clocks.
> > >>> I don't think both of these PIT things need to have different binding
> > >>> files. 90% of it is the same, just the clock-names/number - so you can
> > >>
> > >> But these are different hardware blocks with different functionalities and
> > >> different drivers.
> > > 
> > > Having different drivers doesn't preclude having them in the same
> > > binding provided the function/description etc are more or less
> > > identical. I was confused by:
> > > 
> > > +description:
> > > +  The 64-bit periodic interval timer provides the operating system scheduler
> > > +  interrupt. It is designed to offer maximum accuracy and efficient management,
> > > +  even for systems with long response times.
> > > 
> > > +description:
> > > +  Atmel periodic interval timer provides the operating system’s scheduler
> > > +  interrupt. It is designed to offer maximum accuracy and efficient management,
> > > +  even for systems with long response time.
> > > 
> > > Those seemed like they do the same thing to me!
> > 
> > They do the same thing, they are timers... But the way they do it (from
> > hardware perspective) is totally different. With this would you still
> > prefer to have them merged?
> 
> Yeah, one binding would be my preference.

I'd probably just leave them separate if they're pretty much unrelated.

Rob

[PATCH 4/5] dt-bindings: watchdog: atmel,at91rm9200-wdt: convert to yaml

[Claudiu Beznea]

Convert Atmel AT91RM9200 system timer watchdog bindings to YAML.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
---
 .../watchdog/atmel,at91rm9200-wdt.yaml        | 29 +++++++++++++++++++
 .../watchdog/atmel-at91rm9200-wdt.txt         |  9 ------
 2 files changed, 29 insertions(+), 9 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/watchdog/atmel,at91rm9200-wdt.yaml
 delete mode 100644 Documentation/devicetree/bindings/watchdog/atmel-at91rm9200-wdt.txt

diff --git a/Documentation/devicetree/bindings/watchdog/atmel,at91rm9200-wdt.yaml b/Documentation/devicetree/bindings/watchdog/atmel,at91rm9200-wdt.yaml
new file mode 100644
index 000000000000..d05cdf15dc1c
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/atmel,at91rm9200-wdt.yaml
@@ -0,0 +1,29 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/watchdog/atmel,at91rm9200-wdt.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Atmel AT91RM9200 System Timer Watchdog
+
+maintainers:
+  - Nicolas Ferre <nicolas.ferre@microchip.com>
+  - Alexandre Belloni <alexandre.belloni@bootlin.com>
+  - Claudiu Beznea <claudiu.beznea@microchip.coam>
+
+properties:
+  compatible:
+    const: atmel,at91rm9200-wdt
+
+required:
+  - compatible
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    watchdog {
+        compatible = "atmel,at91rm9200-wdt";
+    }
+
+...
diff --git a/Documentation/devicetree/bindings/watchdog/atmel-at91rm9200-wdt.txt b/Documentation/devicetree/bindings/watchdog/atmel-at91rm9200-wdt.txt
deleted file mode 100644
index d4d86cf8f9eb..000000000000
--- a/Documentation/devicetree/bindings/watchdog/atmel-at91rm9200-wdt.txt
+++ /dev/null
@@ -1,9 +0,0 @@
-Atmel AT91RM9200 System Timer Watchdog
-
-Required properties:
-- compatible: must be "atmel,at91sam9260-wdt".
-
-Example:
-	watchdog@fffffd00 {
-		compatible = "atmel,at91rm9200-wdt";
-	};
-- 
2.34.1

Re: [PATCH 4/5] dt-bindings: watchdog: atmel,at91rm9200-wdt: convert to yaml

[Conor Dooley]

[-- Attachment #1: Type: text/plain, Size: 2291 bytes --]

On Thu, May 25, 2023 at 03:56:01PM +0300, Claudiu Beznea wrote:
> Convert Atmel AT91RM9200 system timer watchdog bindings to YAML.
> 
> Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
> ---
>  .../watchdog/atmel,at91rm9200-wdt.yaml        | 29 +++++++++++++++++++
>  .../watchdog/atmel-at91rm9200-wdt.txt         |  9 ------
>  2 files changed, 29 insertions(+), 9 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/watchdog/atmel,at91rm9200-wdt.yaml
>  delete mode 100644 Documentation/devicetree/bindings/watchdog/atmel-at91rm9200-wdt.txt
> 
> diff --git a/Documentation/devicetree/bindings/watchdog/atmel,at91rm9200-wdt.yaml b/Documentation/devicetree/bindings/watchdog/atmel,at91rm9200-wdt.yaml
> new file mode 100644
> index 000000000000..d05cdf15dc1c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/watchdog/atmel,at91rm9200-wdt.yaml
> @@ -0,0 +1,29 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/watchdog/atmel,at91rm9200-wdt.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Atmel AT91RM9200 System Timer Watchdog
> +
> +maintainers:
> +  - Nicolas Ferre <nicolas.ferre@microchip.com>
> +  - Alexandre Belloni <alexandre.belloni@bootlin.com>
> +  - Claudiu Beznea <claudiu.beznea@microchip.coam>
> +
> +properties:
> +  compatible:
> +    const: atmel,at91rm9200-wdt
> +
> +required:
> +  - compatible
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    watchdog {
> +        compatible = "atmel,at91rm9200-wdt";
> +    }

This example is broken, you missed copying the ;

Thanks,
Conor.

> +
> +...
> diff --git a/Documentation/devicetree/bindings/watchdog/atmel-at91rm9200-wdt.txt b/Documentation/devicetree/bindings/watchdog/atmel-at91rm9200-wdt.txt
> deleted file mode 100644
> index d4d86cf8f9eb..000000000000
> --- a/Documentation/devicetree/bindings/watchdog/atmel-at91rm9200-wdt.txt
> +++ /dev/null
> @@ -1,9 +0,0 @@
> -Atmel AT91RM9200 System Timer Watchdog
> -
> -Required properties:
> -- compatible: must be "atmel,at91sam9260-wdt".
> -
> -Example:
> -	watchdog@fffffd00 {
> -		compatible = "atmel,at91rm9200-wdt";
> -	};
> -- 
> 2.34.1
> 

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Re: [PATCH 4/5] dt-bindings: watchdog: atmel,at91rm9200-wdt: convert to yaml

[Rob Herring]

On Thu, 25 May 2023 15:56:01 +0300, Claudiu Beznea wrote:
> Convert Atmel AT91RM9200 system timer watchdog bindings to YAML.
> 
> Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
> ---
>  .../watchdog/atmel,at91rm9200-wdt.yaml        | 29 +++++++++++++++++++
>  .../watchdog/atmel-at91rm9200-wdt.txt         |  9 ------
>  2 files changed, 29 insertions(+), 9 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/watchdog/atmel,at91rm9200-wdt.yaml
>  delete mode 100644 Documentation/devicetree/bindings/watchdog/atmel-at91rm9200-wdt.txt
> 

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:

dtschema/dtc warnings/errors:
Error: Documentation/devicetree/bindings/watchdog/atmel,at91rm9200-wdt.example.dts:22.5-6 syntax error
FATAL ERROR: Unable to parse input tree
make[1]: *** [scripts/Makefile.lib:419: Documentation/devicetree/bindings/watchdog/atmel,at91rm9200-wdt.example.dtb] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:1512: dt_binding_check] Error 2

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20230525125602.640855-5-claudiu.beznea@microchip.com

The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.

[PATCH 5/5] dt-bindings: timer: atmel,at91rm9200-st: convert to yaml

[Claudiu Beznea]

Convert Atmel system timer to YAML.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
---
 .../devicetree/bindings/arm/atmel-sysregs.txt |  9 ---
 .../bindings/timer/atmel,at91rm9200-st.yaml   | 66 +++++++++++++++++++
 2 files changed, 66 insertions(+), 9 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/timer/atmel,at91rm9200-st.yaml

diff --git a/Documentation/devicetree/bindings/arm/atmel-sysregs.txt b/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
index 54d3f586403e..68c0eacb01ac 100644
--- a/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
+++ b/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
@@ -4,15 +4,6 @@ Chipid required properties:
 - compatible: Should be "atmel,sama5d2-chipid" or "microchip,sama7g5-chipid"
 - reg : Should contain registers location and length
 
-System Timer (ST) required properties:
-- compatible: Should be "atmel,at91rm9200-st", "syscon", "simple-mfd"
-- reg: Should contain registers location and length
-- interrupts: Should contain interrupt for the ST which is the IRQ line
-  shared across all System Controller members.
-- clocks: phandle to input clock.
-Its subnodes can be:
-- watchdog: compatible should be "atmel,at91rm9200-wdt"
-
 RAMC SDRAM/DDR Controller required properties:
 - compatible: Should be "atmel,at91rm9200-sdramc", "syscon"
 			"atmel,at91sam9260-sdramc",
diff --git a/Documentation/devicetree/bindings/timer/atmel,at91rm9200-st.yaml b/Documentation/devicetree/bindings/timer/atmel,at91rm9200-st.yaml
new file mode 100644
index 000000000000..08ee459d9fa3
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/atmel,at91rm9200-st.yaml
@@ -0,0 +1,66 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/timer/atmel,at91rm9200-st.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Atmel System Timer (ST)
+
+maintainers:
+  - Nicolas Ferre <nicolas.ferre@microchip.com>
+  - Alexandre Belloni <alexandre.belloni@microchip.com>
+  - Claudiu Beznea <claudiu.beznea@microchip.com>
+
+description:
+  Atmel system timer integrates a period interval timer, a watchdog timer and a
+  real-time timer.
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - const: atmel,at91rm9200-st
+          - const: syscon
+          - const: simple-mfd
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    description:
+      Contain interrupt for the ST which is the IRQ line shared across all
+      system controller members.
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  watchdog:
+    $ref: ../watchdog/atmel,at91rm9200-wdt.yaml
+    description:
+      Child node describing watchdog.
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/at91.h>
+
+    st: timer@fffffd00 {
+        compatible = "atmel,at91rm9200-st", "syscon", "simple-mfd";
+        reg = <0xfffffd00 0x100>;
+        interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
+        clocks = <&slow_xtal>;
+
+        watchdog {
+            compatible = "atmel,at91rm9200-wdt";
+        };
+    };
+
+...
-- 
2.34.1

Re: [PATCH 5/5] dt-bindings: timer: atmel,at91rm9200-st: convert to yaml

[Conor Dooley]

[-- Attachment #1: Type: text/plain, Size: 3654 bytes --]

On Thu, May 25, 2023 at 03:56:02PM +0300, Claudiu Beznea wrote:
> Convert Atmel system timer to YAML.
> 
> Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
> ---
>  .../devicetree/bindings/arm/atmel-sysregs.txt |  9 ---
>  .../bindings/timer/atmel,at91rm9200-st.yaml   | 66 +++++++++++++++++++
>  2 files changed, 66 insertions(+), 9 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/timer/atmel,at91rm9200-st.yaml
> 
> diff --git a/Documentation/devicetree/bindings/arm/atmel-sysregs.txt b/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
> index 54d3f586403e..68c0eacb01ac 100644
> --- a/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
> +++ b/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
> @@ -4,15 +4,6 @@ Chipid required properties:
>  - compatible: Should be "atmel,sama5d2-chipid" or "microchip,sama7g5-chipid"
>  - reg : Should contain registers location and length
>  
> -System Timer (ST) required properties:
> -- compatible: Should be "atmel,at91rm9200-st", "syscon", "simple-mfd"
> -- reg: Should contain registers location and length
> -- interrupts: Should contain interrupt for the ST which is the IRQ line
> -  shared across all System Controller members.
> -- clocks: phandle to input clock.
> -Its subnodes can be:
> -- watchdog: compatible should be "atmel,at91rm9200-wdt"
> -
>  RAMC SDRAM/DDR Controller required properties:
>  - compatible: Should be "atmel,at91rm9200-sdramc", "syscon"
>  			"atmel,at91sam9260-sdramc",
> diff --git a/Documentation/devicetree/bindings/timer/atmel,at91rm9200-st.yaml b/Documentation/devicetree/bindings/timer/atmel,at91rm9200-st.yaml
> new file mode 100644
> index 000000000000..08ee459d9fa3
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/timer/atmel,at91rm9200-st.yaml
> @@ -0,0 +1,66 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/timer/atmel,at91rm9200-st.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Atmel System Timer (ST)
> +
> +maintainers:
> +  - Nicolas Ferre <nicolas.ferre@microchip.com>
> +  - Alexandre Belloni <alexandre.belloni@microchip.com>
> +  - Claudiu Beznea <claudiu.beznea@microchip.com>
> +
> +description:
> +  Atmel system timer integrates a period interval timer, a watchdog timer and a
> +  real-time timer.
> +
> +properties:
> +  compatible:
> +    oneOf:
> +      - items:
> +          - const: atmel,at91rm9200-st
> +          - const: syscon
> +          - const: simple-mfd
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    description:
> +      Contain interrupt for the ST which is the IRQ line shared across all
> +      system controller members.
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +
> +  watchdog:
> +    $ref: ../watchdog/atmel,at91rm9200-wdt.yaml
> +    description:
> +      Child node describing watchdog.
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - clocks
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/at91.h>
> +
> +    st: timer@fffffd00 {
> +        compatible = "atmel,at91rm9200-st", "syscon", "simple-mfd";
> +        reg = <0xfffffd00 0x100>;
> +        interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;

This one is broken for the same reason too. Please test the bindings :(

Cheers,
Conor.

> +        clocks = <&slow_xtal>;
> +
> +        watchdog {
> +            compatible = "atmel,at91rm9200-wdt";
> +        };
> +    };
> +
> +...
> -- 
> 2.34.1
> 

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