linux-kernel - [PATCH 1/4] dt-bindings: gpu: mali-bifrost: Allow up to two clocks

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Date:   Fri, 26 Nov 2021 16:17:26 +0100
From:   Alex Bee <knaerzche@...il.com>
To:     Heiko Stuebner <heiko@...ech.de>, Rob Herring <robh+dt@...nel.org>
Cc:     Ezequiel Garcia <ezequiel@...guardiasur.com.ar>,
        linux-rockchip@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Alex Bee <knaerzche@...il.com>
Subject: [PATCH 1/4] dt-bindings: gpu: mali-bifrost: Allow up to two clocks

Commit b681af0bc1cc ("drm: panfrost: add optional bus_clock")
added an optional bus_clock to support Allwinner H6 T-720 GPU.
Increase the max clock items in the dt-binding to reflect this.

Bifrost GPU in Rockchip RK3568 SoCs also has a core and a bus clock
and it gets added here in a (very) similar way it was done for
allwinner,sun50i-h6-mali compatible in arm,mali-midgard binding.

Signed-off-by: Alex Bee <knaerzche@...il.com>
---
 .../bindings/gpu/arm,mali-bifrost.yaml        | 20 ++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/gpu/arm,mali-bifrost.yaml b/Documentation/devicetree/bindings/gpu/arm,mali-bifrost.yaml
index 6f98dd55fb4c..2849a7a97d73 100644
--- a/Documentation/devicetree/bindings/gpu/arm,mali-bifrost.yaml
+++ b/Documentation/devicetree/bindings/gpu/arm,mali-bifrost.yaml
@@ -39,7 +39,14 @@ properties:
       - const: gpu
 
   clocks:
-    maxItems: 1
+    minItems: 1
+    maxItems: 2
+
+  clock-names:
+    minItems: 1
+    items:
+      - const: core
+      - const: bus
 
   mali-supply: true
 
@@ -118,6 +125,17 @@ allOf:
         power-domains:
           maxItems: 1
         sram-supply: false
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: rockchip,rk3568-mali
+    then:
+      properties:
+        clocks:
+          minItems: 2
+      required:
+        - clock-names
 
 examples:
   - |
-- 
2.30.2