The PCIESYS register space contains a pure clock controller, which
has no system controller register, so this definitely doesn't need
any "syscon" compatible.

As a side note, luckily no devicetree ever added the syscon string
to PCIESYS clock controller node compatibles, so this also resolves
a dtbs_check warning for mt7622.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 .../bindings/clock/mediatek,mt7622-pciesys.yaml        | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/Documentation/devicetree/bindings/clock/mediatek,mt7622-pciesys.yaml b/Documentation/devicetree/bindings/clock/mediatek,mt7622-pciesys.yaml
index 9c3913f9092c..c77111d10f90 100644
--- a/Documentation/devicetree/bindings/clock/mediatek,mt7622-pciesys.yaml
+++ b/Documentation/devicetree/bindings/clock/mediatek,mt7622-pciesys.yaml
@@ -14,11 +14,9 @@ maintainers:
 
 properties:
   compatible:
-    oneOf:
-      - items:
-          - const: mediatek,mt7622-pciesys
-          - const: syscon
-      - const: mediatek,mt7629-pciesys
+    enum:
+      - mediatek,mt7622-pciesys
+      - mediatek,mt7629-pciesys
 
   reg:
     maxItems: 1
@@ -40,7 +38,7 @@ additionalProperties: false
 examples:
   - |
     clock-controller@1a100800 {
-        compatible = "mediatek,mt7622-pciesys", "syscon";
+        compatible = "mediatek,mt7622-pciesys";
         reg = <0x1a100800 0x1000>;
         #clock-cells = <1>;
         #reset-cells = <1>;
-- 
2.52.0

Quoting AngeloGioacchino Del Regno (2026-01-13 04:00:08)
> The PCIESYS register space contains a pure clock controller, which
> has no system controller register, so this definitely doesn't need
> any "syscon" compatible.
> 
> As a side note, luckily no devicetree ever added the syscon string
> to PCIESYS clock controller node compatibles, so this also resolves
> a dtbs_check warning for mt7622.
> 
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> ---

Applied to clk-next

On 13/1/26 12:00, AngeloGioacchino Del Regno wrote:
> The PCIESYS register space contains a pure clock controller, which
> has no system controller register, so this definitely doesn't need
> any "syscon" compatible.
> 
> As a side note, luckily no devicetree ever added the syscon string
> to PCIESYS clock controller node compatibles, so this also resolves
> a dtbs_check warning for mt7622.
> 
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>

> ---
>   .../bindings/clock/mediatek,mt7622-pciesys.yaml        | 10 ++++------
>   1 file changed, 4 insertions(+), 6 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/clock/mediatek,mt7622-pciesys.yaml b/Documentation/devicetree/bindings/clock/mediatek,mt7622-pciesys.yaml
> index 9c3913f9092c..c77111d10f90 100644
> --- a/Documentation/devicetree/bindings/clock/mediatek,mt7622-pciesys.yaml
> +++ b/Documentation/devicetree/bindings/clock/mediatek,mt7622-pciesys.yaml
> @@ -14,11 +14,9 @@ maintainers:
>   
>   properties:
>     compatible:
> -    oneOf:
> -      - items:
> -          - const: mediatek,mt7622-pciesys
> -          - const: syscon
> -      - const: mediatek,mt7629-pciesys
> +    enum:
> +      - mediatek,mt7622-pciesys
> +      - mediatek,mt7629-pciesys
>   
>     reg:
>       maxItems: 1
> @@ -40,7 +38,7 @@ additionalProperties: false
>   examples:
>     - |
>       clock-controller@1a100800 {
> -        compatible = "mediatek,mt7622-pciesys", "syscon";
> +        compatible = "mediatek,mt7622-pciesys";
>           reg = <0x1a100800 0x1000>;
>           #clock-cells = <1>;
>           #reset-cells = <1>;

On Tue, 13 Jan 2026 12:00:08 +0100, AngeloGioacchino Del Regno wrote:
> The PCIESYS register space contains a pure clock controller, which
> has no system controller register, so this definitely doesn't need
> any "syscon" compatible.
> 
> As a side note, luckily no devicetree ever added the syscon string
> to PCIESYS clock controller node compatibles, so this also resolves
> a dtbs_check warning for mt7622.
> 
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> ---
>  .../bindings/clock/mediatek,mt7622-pciesys.yaml        | 10 ++++------
>  1 file changed, 4 insertions(+), 6 deletions(-)
> 

Acked-by: Rob Herring (Arm) <robh@kernel.org>