Add compatible string and GCE property for MT8195 SPLIT, of
which is operated by MDP3.

Signed-off-by: Moudy Ho <moudy.ho@mediatek.com>
---
 .../display/mediatek/mediatek,split.yaml      | 27 +++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,split.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,split.yaml
index a8a5c9608598..e4affc854f3d 100644
--- a/Documentation/devicetree/bindings/display/mediatek/mediatek,split.yaml
+++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,split.yaml
@@ -23,6 +23,7 @@ properties:
     oneOf:
       - enum:
           - mediatek,mt8173-disp-split
+          - mediatek,mt8195-mdp3-split
       - items:
           - const: mediatek,mt6795-disp-split
           - const: mediatek,mt8173-disp-split
@@ -38,6 +39,21 @@ properties:
       the power controller specified by phandle. See
       Documentation/devicetree/bindings/power/power-domain.yaml for details.
 
+  mediatek,gce-client-reg:
+    description:
+      The register of display function block to be set by gce. There are 4 arguments,
+      such as gce node, subsys id, offset and register size. The subsys id that is
+      mapping to the register of display function blocks is defined in the gce header
+      include/dt-bindings/gce/<chip>-gce.h of each chips.
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    items:
+      items:
+        - description: phandle of GCE
+        - description: GCE subsys id
+        - description: register offset
+        - description: register size
+    maxItems: 1
+
   clocks:
     items:
       - description: SPLIT Clock
@@ -48,6 +64,17 @@ required:
   - power-domains
   - clocks
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: mediatek,mt8195-mdp3-split
+
+    then:
+      required:
+        - mediatek,gce-client-reg
+
 additionalProperties: false
 
 examples:
-- 
2.18.0

On 12/10/2023 10:40, Moudy Ho wrote:
> Add compatible string and GCE property for MT8195 SPLIT, of
> which is operated by MDP3.
> 
> Signed-off-by: Moudy Ho <moudy.ho@mediatek.com>
> ---

After feedback from Angelo:

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof

Il 16/10/23 18:21, Krzysztof Kozlowski ha scritto:
> On 12/10/2023 10:40, Moudy Ho wrote:
>> Add compatible string and GCE property for MT8195 SPLIT, of
>> which is operated by MDP3.
>>
>> Signed-off-by: Moudy Ho <moudy.ho@mediatek.com>
>> ---
> 
> After feedback from Angelo:
> 
> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> 

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

On 12/10/2023 10:40, Moudy Ho wrote:
> Add compatible string and GCE property for MT8195 SPLIT, of
> which is operated by MDP3.
> 
> Signed-off-by: Moudy Ho <moudy.ho@mediatek.com>


> +allOf:
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: mediatek,mt8195-mdp3-split
> +
> +    then:
> +      required:
> +        - mediatek,gce-client-reg

else:
  mediatek,gce-client-reg: false


> +
>  additionalProperties: false
>  
>  examples:

Best regards,
Krzysztof

Il 13/10/23 08:52, Krzysztof Kozlowski ha scritto:
> On 12/10/2023 10:40, Moudy Ho wrote:
>> Add compatible string and GCE property for MT8195 SPLIT, of
>> which is operated by MDP3.
>>
>> Signed-off-by: Moudy Ho <moudy.ho@mediatek.com>
> 
> 
>> +allOf:
>> +  - if:
>> +      properties:
>> +        compatible:
>> +          contains:
>> +            const: mediatek,mt8195-mdp3-split
>> +
>> +    then:
>> +      required:
>> +        - mediatek,gce-client-reg
> 
> else:
>    mediatek,gce-client-reg: false
> 
> 

Technically, all of the display components do support GCE, using it is
a matter of preference, so disallowing gce-client-reg on anything that
is not mt8195-mdp3-split is *technically* wrong, as much as not having
that from the beginning was also technically wrong... :-)

P.S.: The driver for the display split component doesn't use GCE yet,
only mdp3 for now, but again, it's the driver - while the HW is actually
capable of using that

Cheers,
Angelo

>> +
>>   additionalProperties: false
>>   
>>   examples:
> 
> Best regards,
> Krzysztof
>

On 16/10/2023 10:01, AngeloGioacchino Del Regno wrote:
> Il 13/10/23 08:52, Krzysztof Kozlowski ha scritto:
>> On 12/10/2023 10:40, Moudy Ho wrote:
>>> Add compatible string and GCE property for MT8195 SPLIT, of
>>> which is operated by MDP3.
>>>
>>> Signed-off-by: Moudy Ho <moudy.ho@mediatek.com>
>>
>>
>>> +allOf:
>>> +  - if:
>>> +      properties:
>>> +        compatible:
>>> +          contains:
>>> +            const: mediatek,mt8195-mdp3-split
>>> +
>>> +    then:
>>> +      required:
>>> +        - mediatek,gce-client-reg
>>
>> else:
>>    mediatek,gce-client-reg: false
>>
>>
> 
> Technically, all of the display components do support GCE, using it is
> a matter of preference, so disallowing gce-client-reg on anything that
> is not mt8195-mdp3-split is *technically* wrong, as much as not having
> that from the beginning was also technically wrong... :-)
> 
> P.S.: The driver for the display split component doesn't use GCE yet,
> only mdp3 for now, but again, it's the driver - while the HW is actually
> capable of using that

Hm, fine with me then.

Best regards,
Krzysztof