The single existing GPU (AXE-1-16M) only requires a single power domain.
Subsequent patches will add support for BXS-4-64 MC1, which has two power
domains. Add infrastructure now to allow for this.

Signed-off-by: Matt Coster <matt.coster@imgtec.com>
---
Changes in v2:
- Simplified power-domains constraints P3
- Link to v1: https://lore.kernel.org/r/20241105-sets-bxs-4-64-patch-v1-v1-3-4ed30e865892@imgtec.com
---
 .../devicetree/bindings/gpu/img,powervr-rogue.yaml | 25 ++++++++++++++++++++--
 1 file changed, 23 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml b/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml
index 3b5a5b966585ac29ad104c7aef19881eca73ce80..c629f54c86c441b4cc9e57925f1d65129cbe285b 100644
--- a/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml
+++ b/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml
@@ -43,8 +43,15 @@ properties:
   interrupts:
     maxItems: 1
 
-  power-domains:
-    maxItems: 1
+  power-domains: true
+
+  power-domain-names:
+    oneOf:
+      - items:
+          - const: a
+      - items:
+          - const: a
+          - const: b
 
 required:
   - compatible
@@ -52,10 +59,23 @@ required:
   - clocks
   - clock-names
   - interrupts
+  - power-domains
+  - power-domain-names
 
 additionalProperties: false
 
 allOf:
+  # Cores with a single power domain
+  - if:
+      properties:
+        compatible:
+          contains:
+            anyOf:
+              - const: img,img-axe-1-16m
+    then:
+      properties:
+        power-domains:
+          maxItems: 1
   # Vendor integrations using a single clock domain
   - if:
       properties:
@@ -81,4 +101,5 @@ examples:
         clock-names = "core";
         interrupts = <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>;
         power-domains = <&k3_pds 187 TI_SCI_PD_EXCLUSIVE>;
+        power-domain-names = "a";
     };

-- 
2.47.0

On Mon, Nov 18, 2024 at 01:01:55PM +0000, Matt Coster wrote:
> The single existing GPU (AXE-1-16M) only requires a single power domain.
> Subsequent patches will add support for BXS-4-64 MC1, which has two power
> domains. Add infrastructure now to allow for this.
> 
> Signed-off-by: Matt Coster <matt.coster@imgtec.com>
> ---
> Changes in v2:
> - Simplified power-domains constraints P3
> - Link to v1: https://lore.kernel.org/r/20241105-sets-bxs-4-64-patch-v1-v1-3-4ed30e865892@imgtec.com
> ---
>  .../devicetree/bindings/gpu/img,powervr-rogue.yaml | 25 ++++++++++++++++++++--
>  1 file changed, 23 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml b/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml
> index 3b5a5b966585ac29ad104c7aef19881eca73ce80..c629f54c86c441b4cc9e57925f1d65129cbe285b 100644
> --- a/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml
> +++ b/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml
> @@ -43,8 +43,15 @@ properties:
>    interrupts:
>      maxItems: 1
>  
> -  power-domains:
> -    maxItems: 1
> +  power-domains: true

NAK for the same reasons.

> +
> +  power-domain-names:
> +    oneOf:
> +      - items:
> +          - const: a
> +      - items:
> +          - const: a
> +          - const: b

No, list items and use minItems.

But what's more: there is no user of it. Sorry, that's a no go. You
probably organized patches incorrectly, but this on its own is just
incorrect.


>  
>  required:
>    - compatible
> @@ -52,10 +59,23 @@ required:
>    - clocks
>    - clock-names
>    - interrupts
> +  - power-domains
> +  - power-domain-names

That's an ABI break. Explain in commit msg why and its impact on users.

>  
>  additionalProperties: false
>  
>  allOf:
> +  # Cores with a single power domain
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            anyOf:

No, drop.

Best regards,
Krzysztof