[PATCH v10 02/15] dt-bindings: mmc: cdns: Add AMD Pensando Elba SoC

[Brad Larson <blarson@xxxxxxx>]

AMD Pensando Elba ARM 64-bit SoC is integrated with this IP and
explicitly controls byte-lane enables.

Signed-off-by: Brad Larson <blarson@xxxxxxx>
---

v10 changes:
- Move reset-names property definition next to existing resets prop
- Move allOf to the bottom and set resets/reset-names required only for pensando
- Fix reg maxItems for existing, must be 1

v9 changes:
- Add reset-names and resets properties
- Add if/then on property amd,pensando-elba-sd4hc to set reg property
  values for minItems and maxItems

---
 .../devicetree/bindings/mmc/cdns,sdhci.yaml   | 33 ++++++++++++++++---
 1 file changed, 29 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml b/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml
index adacd0535c14..0c4d6d4b2b58 100644
--- a/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml
+++ b/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml
@@ -9,19 +9,18 @@ title: Cadence SD/SDIO/eMMC Host Controller (SD4HC)
 maintainers:
   - Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
 
-allOf:
-  - $ref: mmc-controller.yaml
-
 properties:
   compatible:
     items:
       - enum:
+          - amd,pensando-elba-sd4hc
           - microchip,mpfs-sd4hc
           - socionext,uniphier-sd4hc
       - const: cdns,sd4hc
 
   reg:
-    maxItems: 1
+    minItems: 1
+    maxItems: 2
 
   interrupts:
     maxItems: 1
@@ -30,8 +29,13 @@ properties:
     maxItems: 1
 
   resets:
+    description: physical line number to hardware reset the mmc
     maxItems: 1
 
+  reset-names:
+    items:
+      - const: hw
+
   # PHY DLL input delays:
   # They are used to delay the data valid window, and align the window to
   # sampling clock. The delay starts from 5ns (for delay parameter equal to 0)
@@ -120,6 +124,27 @@ required:
   - interrupts
   - clocks
 
+allOf:
+  - $ref: mmc-controller.yaml
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: amd,pensando-elba-sd4hc
+    then:
+      properties:
+        reg:
+          minItems: 2
+      required:
+        - reset-names
+        - resets
+    else:
+      properties:
+        reset-names: false
+        resets: false
+        reg:
+          maxItems: 1
+
 unevaluatedProperties: false
 
 examples:
-- 
2.17.1