[PATCH 2/3] dt-bindings: mmc: sdhci-of-dwcmhsc: Add rockchip support

[Shawn Lin <shawn.lin@rock-chips.com>]

This patch adds rockchip support in sdhci-of-dwcmhsc.yaml

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
---

 .../devicetree/bindings/mmc/sdhci-of-dwcmshc.yaml  | 24 ++++++++++++++++++++--
 1 file changed, 22 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/mmc/sdhci-of-dwcmshc.yaml b/Documentation/devicetree/bindings/mmc/sdhci-of-dwcmshc.yaml
index ff2bff1..4808094 100644
--- a/Documentation/devicetree/bindings/mmc/sdhci-of-dwcmshc.yaml
+++ b/Documentation/devicetree/bindings/mmc/sdhci-of-dwcmshc.yaml
@@ -22,6 +22,7 @@ select:
 properties:
   compatible:
     enum:
+      - rockchip,dwcmshc-sdhci
       - snps,dwcmshc-sdhci
 
   reg:
@@ -33,16 +34,26 @@ properties:
 
   clocks:
     minItems: 1
-    maxItems: 2
+    maxItems: 5
     description:
       Handle to "core" for core clock and "bus" for optional bus clock.
+      "axi", "block" and "timer" are for Rockchip specified which aims for
+      DMA, pipe and internal timer respectively.
 
   clock-names:
     minItems: 1
-    maxItems: 2
+    maxItems: 5
     items:
       - const: bus
       - const: core
+      - const: axi
+      - const: block
+      - const: timer
+
+  rockchip,txclk-tapnum:
+    description: Specify the number of delay for tx sampling.
+    $ref: /schemas/types.yaml#/definitions/uint32
+
 
 required:
   - compatible
@@ -55,6 +66,15 @@ unevaluatedProperties: false
 
 examples:
   - |
+    sdhci@fe310000 {
+      compatible = "rockchip,dwcmshc-sdhci";
+      reg = <0xfe310000 0x10000>;
+      interrupts = <0 25 0x4>;
+      bus-width = <8>;
+      clocks = <&cru 17>, <&cru 18>, <&cru 19>, <&cru 20>;
+      clock-names = "core", "axi", "block", "timer";
+    };
+  - |
     sdhci@aa0000 {
       compatible = "snps,dwcmshc-sdhci";
       reg = <0xaa000 0x1000>;
-- 
2.7.4