[PATCH v4 12/18] dt-bindings: gpu: Add support for T-HEAD TH1520 GPU

[Michal Wilczynski <m.wilczynski@samsung.com>]

Add bindings for the PowerVR BXM-4-64 GPU integrated in the T-HEAD
TH1520 SoC.  This GPU requires two clocks.

Document the integration details including clock, reset, power domain
and interrupt assignments. Add a dt-bindings example showing the proper
usage of the compatible string "thead,th1520-gpu" along with
"img,img-bxm".

Signed-off-by: Michal Wilczynski <m.wilczynski@samsung.com>
---
 .../bindings/gpu/img,powervr-rogue.yaml       | 39 +++++++++++++++++--
 1 file changed, 35 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml b/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml
index bb607d4b1e07..b0d9635704d8 100644
--- a/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml
+++ b/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml
@@ -12,10 +12,15 @@ maintainers:
 
 properties:
   compatible:
-    items:
-      - enum:
-          - ti,am62-gpu
-      - const: img,img-axe # IMG AXE GPU model/revision is fully discoverable
+    oneOf:
+      - items:
+          - enum:
+              - ti,am62-gpu
+          - const: img,img-axe # IMG AXE GPU model/revision is fully discoverable
+      - items:
+          - enum:
+              - thead,th1520-gpu
+          - const: img,img-bxm
 
   reg:
     maxItems: 1
@@ -60,6 +65,17 @@ allOf:
         clocks:
           maxItems: 1
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: thead,th1520-gpu
+    then:
+      properties:
+        clocks:
+          minItems: 2
+          maxItems: 2
+
 examples:
   - |
     #include <dt-bindings/interrupt-controller/irq.h>
@@ -74,3 +90,18 @@ examples:
         interrupts = <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>;
         power-domains = <&k3_pds 187 TI_SCI_PD_EXCLUSIVE>;
     };
+
+    #include <dt-bindings/clock/thead,th1520-clk-ap.h>
+    #include <dt-bindings/power/thead,th1520-power.h>
+    #include <dt-bindings/reset/thead,th1520-reset.h>
+
+    gpu: gpu@fff0000 {
+        compatible = "thead,th1520-gpu", "img,img-bxm";
+        reg = <0xfff0000 0x1000>;
+        interrupt-parent = <&plic>;
+        interrupts = <102 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&clk CLK_GPU_CORE>, <&clk CLK_GPU_CFG_ACLK>;
+        clock-names = "core", "mem";
+        power-domains = <&pd TH1520_GPU_PD>;
+        resets = <&rst TH1520_RESET_ID_GPU>;
+    };
-- 
2.34.1