[PATCH 1/3] dt-bindings: mmc: Add sdhci support for Canaan k230

[Jiayu Du]

The Canaan k230 uses the SDHCI from Synopsys. Add compatible strings
to the k230. The k230 has two controllers. MMC0 supports eMMC, while
MMC1 supports SDIO.

Signed-off-by: Jiayu Du <jiayu.riscv at isrc.iscas.ac.cn>
---
 .../bindings/mmc/snps,dwcmshc-sdhci.yaml      | 22 +++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/Documentation/devicetree/bindings/mmc/snps,dwcmshc-sdhci.yaml b/Documentation/devicetree/bindings/mmc/snps,dwcmshc-sdhci.yaml
index 7e7c55dc2440..cab33da3af7d 100644
--- a/Documentation/devicetree/bindings/mmc/snps,dwcmshc-sdhci.yaml
+++ b/Documentation/devicetree/bindings/mmc/snps,dwcmshc-sdhci.yaml
@@ -23,6 +23,8 @@ properties:
           - const: sophgo,sg2044-dwcmshc
           - const: sophgo,sg2042-dwcmshc
       - enum:
+          - canaan,k230-emmc
+          - canaan,k230-sdio
           - rockchip,rk3568-dwcmshc
           - rockchip,rk3588-dwcmshc
           - snps,dwcmshc-sdhci
@@ -87,6 +89,26 @@ required:
 allOf:
   - $ref: mmc-controller.yaml#
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - canaan,k230-emmc
+              - canaan,k230-sdio
+    then:
+      properties:
+        clocks:
+          minItems: 2
+          maxItems: 5
+        clock-names:
+          items:
+            - const: core
+            - const: bus
+            - const: axi
+            - const: block
+            - const: timer
+
   - if:
       properties:
         compatible:
-- 
2.52.0