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[2/3] dt-bindings: nvmem: brcm,nvram: add NVMEM cell to example

Message ID 20220124160300.25131-3-zajec5@gmail.com
State Changes Requested, archived
Headers show
Series [1/3] dt-bindings: nvmem: make "reg" property optional | expand

Checks

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robh/checkpatch success
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robh/dt-meta-schema success

Commit Message

Rafał Miłecki Jan. 24, 2022, 4:02 p.m. UTC
From: Rafał Miłecki <rafal@milecki.pl>

NVRAM doesn't have cells at hardcoded addresses. They are stored in
internal struct (custom & dynamic format) . It's still important to
define relevant cells in DT so NVMEM consumers can reference them.

One of cells set in almost every device is "et0macaddr" containing MAC
address. Add it to example to show how it can be referenced.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
---
 Documentation/devicetree/bindings/nvmem/brcm,nvram.yaml | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

Comments

Rob Herring Feb. 11, 2022, 12:45 p.m. UTC | #1
On Mon, Jan 24, 2022 at 05:02:59PM +0100, Rafał Miłecki wrote:
> From: Rafał Miłecki <rafal@milecki.pl>
> 
> NVRAM doesn't have cells at hardcoded addresses. They are stored in
> internal struct (custom & dynamic format) . It's still important to
> define relevant cells in DT so NVMEM consumers can reference them.
> 
> One of cells set in almost every device is "et0macaddr" containing MAC
> address. Add it to example to show how it can be referenced.

"et0macaddr" is defined in the internal struct? Can you make this 
explicit in the the schema that's where the child node names come from. 
Perhaps go as far as documenting what some of the names are if they are 
common and not documented elsewhere.

> 
> Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
> ---
>  Documentation/devicetree/bindings/nvmem/brcm,nvram.yaml | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/nvmem/brcm,nvram.yaml b/Documentation/devicetree/bindings/nvmem/brcm,nvram.yaml
> index 8c3f0cd22821..ab14e3ae45c8 100644
> --- a/Documentation/devicetree/bindings/nvmem/brcm,nvram.yaml
> +++ b/Documentation/devicetree/bindings/nvmem/brcm,nvram.yaml
> @@ -32,6 +32,9 @@ unevaluatedProperties: false
>  examples:
>    - |
>      nvram@1eff0000 {
> -            compatible = "brcm,nvram";
> -            reg = <0x1eff0000 0x10000>;
> +        compatible = "brcm,nvram";
> +        reg = <0x1eff0000 0x10000>;
> +
> +        mac: et0macaddr {
> +        };
>      };
> -- 
> 2.31.1
> 
>
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/nvmem/brcm,nvram.yaml b/Documentation/devicetree/bindings/nvmem/brcm,nvram.yaml
index 8c3f0cd22821..ab14e3ae45c8 100644
--- a/Documentation/devicetree/bindings/nvmem/brcm,nvram.yaml
+++ b/Documentation/devicetree/bindings/nvmem/brcm,nvram.yaml
@@ -32,6 +32,9 @@  unevaluatedProperties: false
 examples:
   - |
     nvram@1eff0000 {
-            compatible = "brcm,nvram";
-            reg = <0x1eff0000 0x10000>;
+        compatible = "brcm,nvram";
+        reg = <0x1eff0000 0x10000>;
+
+        mac: et0macaddr {
+        };
     };