dt-bindings: mmc: mtk-sd: increase reg items

MediaTek has a new version of mmc IP since mt8183. Some IO registers
are moved to top to improve hardware design and named as "host top
registers".

Add host top register in the reg binding description for mt8183 and
successors.

Signed-off-by: Wenbin Mei <wenbin.mei@mediatek.com>
Signed-off-by: Tinghan Shen <tinghan.shen@mediatek.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220330094532.21721-2-tinghan.shen@mediatek.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/Documentation/devicetree/bindings/mmc/mtk-sd.yaml b/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
index 297ada0..2a2e9fa 100644 (file)
--- a/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
+++ b/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
@@ -40,7 +40,10 @@ properties:
           - const: mediatek,mt8183-mmc
 
   reg:
-    maxItems: 1
+    minItems: 1
+    items:
+      - description: base register (required).
+      - description: top base register (required for MT8183).
 
   clocks:
     description:
@@ -168,6 +171,16 @@ required:
   - vmmc-supply
   - vqmmc-supply
 
+if:
+  properties:
+    compatible:
+      contains:
+        const: mediatek,mt8183-mmc
+then:
+  properties:
+    reg:
+      minItems: 2
+
 unevaluatedProperties: false
 
 examples: