[PATCH 04/17] dt-bindings: soc: spacemit: allow eDP/DP PHY PLL pixel clocks on K3 APMU

[Cody Kang <codykang.hk@gmail.com>]

The APMU's eDP pixel-clock muxes select the DP PHY PLLs as parents, so the
K3 syscon takes two clock inputs the other variants do not have.

Gate them behind the K3 compatible instead of widening the shared clock
list, so a non-K3 syscon cannot silently accept clocks it has no mux for.

Signed-off-by: Cody Kang <codykang.hk@gmail.com>
---
 .../bindings/soc/spacemit/spacemit,k1-syscon.yaml  | 30 +++++++++++++++++++++-
 1 file changed, 29 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/soc/spacemit/spacemit,k1-syscon.yaml b/Documentation/devicetree/bindings/soc/spacemit/spacemit,k1-syscon.yaml
index d3a7c93c3c54..b8fc6632a392 100644
--- a/Documentation/devicetree/bindings/soc/spacemit/spacemit,k1-syscon.yaml
+++ b/Documentation/devicetree/bindings/soc/spacemit/spacemit,k1-syscon.yaml
@@ -31,14 +31,18 @@ properties:
     maxItems: 1
 
   clocks:
-    maxItems: 4
+    minItems: 4
+    maxItems: 6
 
   clock-names:
+    minItems: 4
     items:
       - const: osc
       - const: vctcxo_1m
       - const: vctcxo_3m
       - const: vctcxo_24m
+      - const: edp0_pll_pxclk
+      - const: edp1_pll_pxclk
 
   "#clock-cells":
     const: 1
@@ -95,6 +99,30 @@ allOf:
         - clocks
         - clock-names
         - "#clock-cells"
+  # Only the K3 APMU exposes the two eDP/DP PHY PLL pixel clocks as extra
+  # inputs (parents of its eDP pixel-clock muxes); every other variant has
+  # the four base oscillator inputs only.
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: spacemit,k3-syscon-apmu
+    then:
+      properties:
+        clocks:
+          minItems: 4
+          maxItems: 6
+        clock-names:
+          minItems: 4
+          maxItems: 6
+    else:
+      properties:
+        clocks:
+          minItems: 4
+          maxItems: 4
+        clock-names:
+          minItems: 4
+          maxItems: 4
 
 additionalProperties: false
 

-- 
2.43.0