[PATCH] dt-bindings: mmc: mtk-sd: Document extra clocks for MT8189

[PATCH] dt-bindings: mmc: mtk-sd: Document extra clocks for MT8189

[Louis-Alexis Eyraud]

MT8189 SoC MMC Controller IP has 4 additional clocks.
Describe them in the dt-bindings for this SoC.

Fixes: 7514f64780a4 ("dt-bindings: mmc: mtk-sd: Add support for MT8189 SoC")
Signed-off-by: Louis-Alexis Eyraud <louisalexis.eyraud@collabora.com>
---
The patch is based on linux-next tree (tag: next-20260630) and has
been tested on Mediatek Genio 520-EVK (MT8371) and 720-EVK (MT8391)
boards with board hardware enablement patch series.

Additional note:
There is currently no use of "mediatek,mt8189-mmc" compatible in
Mediatek board devicetrees.
---
 Documentation/devicetree/bindings/mmc/mtk-sd.yaml | 29 ++++++++++++++++++++++-
 1 file changed, 28 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/mmc/mtk-sd.yaml b/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
index eb3755bdfdf7..a4d032224dce 100644
--- a/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
+++ b/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
@@ -193,7 +193,6 @@ allOf:
             - mediatek,mt8183-mmc
             - mediatek,mt8186-mmc
             - mediatek,mt8188-mmc
-            - mediatek,mt8189-mmc
             - mediatek,mt8195-mmc
             - mediatek,mt8196-mmc
             - mediatek,mt8516-mmc
@@ -348,6 +347,34 @@ allOf:
             - const: axi_cg
             - const: ahb_cg
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: mediatek,mt8189-mmc
+    then:
+      properties:
+        clocks:
+          minItems: 6
+          items:
+            - description: source clock
+            - description: HCLK which used for host
+            - description: independent source clock gate
+            - description: bus clock used for internal register access
+            - description: peripheral bus clock gate
+            - description: AXI bus clock gate
+            - description: crypto clock used for data encrypt/decrypt (optional)
+        clock-names:
+          minItems: 6
+          items:
+            - const: source
+            - const: hclk
+            - const: source_cg
+            - const: bus_clk
+            - const: pclk_cg
+            - const: axi_cg
+            - const: crypto
+
 unevaluatedProperties: false
 
 examples:

---
base-commit: ba7c57499e5999aeae8dd4f954eb2600589d80aa
change-id: 20260701-mt8189-mmc-dt-bindings-fix-18959c85d5b6

Best regards,
-- 
Louis-Alexis Eyraud <louisalexis.eyraud@collabora.com>

Re: [PATCH] dt-bindings: mmc: mtk-sd: Document extra clocks for MT8189

[Conor Dooley]

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On Wed, Jul 01, 2026 at 04:44:26PM +0200, Louis-Alexis Eyraud wrote:
> MT8189 SoC MMC Controller IP has 4 additional clocks.

I think "additional" is slightly confusing wording here, since you go on
to permit 6 not 11 (the binding already allows 7).

Not a big deak though,
Acked-by: Conor Dooley <conor.dooley@microchip.com>
pw-bot: not-applicable

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