[v5,1/2] dt-bindings: rng: bcm2835: document reset support
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Message ID 20210304073308.25906-2-noltari@gmail.com
State New, archived
Headers show
Series
  • hwrng: bcm2835: add reset support
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Commit Message

Álvaro Fernández Rojas March 4, 2021, 7:33 a.m. UTC
Some devices may need to perform a reset before using the RNG, such as the
BCM6368.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
---
 v5: no changes.
 v4: pass dt_binding_check.
 v3: make resets required if brcm,bcm6368-rng.
 v2: document reset support.

 .../devicetree/bindings/rng/brcm,bcm2835.yaml   | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

Comments

Nicolas Saenz Julienne March 4, 2021, 12:08 p.m. UTC | #1
Sorry Alvaro I missed you sent a v5 already. See my comments in v3.

Regards,
Nicolas

On Thu, 2021-03-04 at 08:33 +0100, Álvaro Fernández Rojas wrote:
> Some devices may need to perform a reset before using the RNG, such as the
> BCM6368.
> 
> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
> ---
>  v5: no changes.
>  v4: pass dt_binding_check.
>  v3: make resets required if brcm,bcm6368-rng.
>  v2: document reset support.
> 
>  .../devicetree/bindings/rng/brcm,bcm2835.yaml   | 17 +++++++++++++++++
>  1 file changed, 17 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/rng/brcm,bcm2835.yaml b/Documentation/devicetree/bindings/rng/brcm,bcm2835.yaml
> index c147900f9041..11c23e1f6988 100644
> --- a/Documentation/devicetree/bindings/rng/brcm,bcm2835.yaml
> +++ b/Documentation/devicetree/bindings/rng/brcm,bcm2835.yaml
> @@ -37,6 +37,21 @@ required:
>  
> 
>  additionalProperties: false
>  
> 
> +if:
> +  properties:
> +    compatible:
> +      enum:
> +        - brcm,bcm6368-rng
> +then:
> +  properties:
> +    resets:
> +      maxItems: 1
> +  required:
> +    - resets
> +else:
> +  properties:
> +    resets: false
> +
>  examples:
>    - |
>      rng@7e104000 {
> @@ -58,4 +73,6 @@ examples:
>  
> 
>          clocks = <&periph_clk 18>;
>          clock-names = "ipsec";
> +
> +        resets = <&periph_rst 4>;
>      };
Rob Herring March 4, 2021, 8:47 p.m. UTC | #2
On Thu, 04 Mar 2021 08:33:07 +0100, Álvaro Fernández Rojas wrote:
> Some devices may need to perform a reset before using the RNG, such as the
> BCM6368.
> 
> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
> ---
>  v5: no changes.
>  v4: pass dt_binding_check.
>  v3: make resets required if brcm,bcm6368-rng.
>  v2: document reset support.
> 
>  .../devicetree/bindings/rng/brcm,bcm2835.yaml   | 17 +++++++++++++++++
>  1 file changed, 17 insertions(+)
> 

My bot found errors running 'make dt_binding_check' on your patch:

yamllint warnings/errors:

dtschema/dtc warnings/errors:
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/rng/brcm,bcm2835.example.dt.yaml: rng@10004180: 'resets' does not match any of the regexes: 'pinctrl-[0-9]+'
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/rng/brcm,bcm2835.yaml

See https://patchwork.ozlabs.org/patch/1447144

This check can fail if there are any dependencies. The base for a patch
series is generally the most recent rc1.

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.

Patch
diff mbox series

diff --git a/Documentation/devicetree/bindings/rng/brcm,bcm2835.yaml b/Documentation/devicetree/bindings/rng/brcm,bcm2835.yaml
index c147900f9041..11c23e1f6988 100644
--- a/Documentation/devicetree/bindings/rng/brcm,bcm2835.yaml
+++ b/Documentation/devicetree/bindings/rng/brcm,bcm2835.yaml
@@ -37,6 +37,21 @@  required:
 
 additionalProperties: false
 
+if:
+  properties:
+    compatible:
+      enum:
+        - brcm,bcm6368-rng
+then:
+  properties:
+    resets:
+      maxItems: 1
+  required:
+    - resets
+else:
+  properties:
+    resets: false
+
 examples:
   - |
     rng@7e104000 {
@@ -58,4 +73,6 @@  examples:
 
         clocks = <&periph_clk 18>;
         clock-names = "ipsec";
+
+        resets = <&periph_rst 4>;
     };