Arm Juno updates for v6.11

Addition of dedicated FPGA syscon compatible for Juno platforms. Also
 enablement of GPU device node now that the panfrost driver is already
 enabled as a module in defconfig.
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Merge tag 'juno-updates-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into soc/dt

Arm Juno updates for v6.11

Addition of dedicated FPGA syscon compatible for Juno platforms. Also
enablement of GPU device node now that the panfrost driver is already
enabled as a module in defconfig.

* tag 'juno-updates-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  arm64: dts: juno: Enable GPU
  arm64: dts: juno: add dedicated FPGA syscon compatible
  dt-bindings: arm: arm,juno-fpga-apb-regs: document FPGA syscon

Link: https://lore.kernel.org/r/20240620093924.375244-2-sudeep.holla@arm.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Documentation/devicetree/bindings/arm/arm,juno-fpga-apb-regs.yaml

@@ -0,0 +1,61 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/arm,juno-fpga-apb-regs.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ARM Juno FPGA APB Registers
+
+maintainers:
+  - Sudeep Holla <sudeep.holla@arm.com>
+
+properties:
+  compatible:
+    items:
+      - const: arm,juno-fpga-apb-regs
+      - const: syscon
+      - const: simple-mfd
+
+  reg:
+    maxItems: 1
+
+  ranges: true
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 1
+
+patternProperties:
+  "^led@[0-9a-f]+,[0-9a-f]$":
+    $ref: /schemas/leds/register-bit-led.yaml#
+
+required:
+  - compatible
+  - reg
+  - ranges
+  - "#address-cells"
+  - "#size-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    syscon@10000 {
+        compatible = "arm,juno-fpga-apb-regs", "syscon", "simple-mfd";
+        reg = <0x010000 0x1000>;
+        ranges = <0x0 0x10000 0x1000>;
+        #address-cells = <1>;
+        #size-cells = <1>;
+
+        led@8,0 {
+            compatible = "register-bit-led";
+            reg = <0x08 0x04>;
+            offset = <0x08>;
+            mask = <0x01>;
+            label = "vexpress:0";
+            linux,default-trigger = "heartbeat";
+            default-state = "on";
+        };
+    };

arch/arm64/boot/dts/arm/juno-base.dtsi

@@ -663,7 +663,6 @@ gpu: gpu@2d000000 {
 		dma-coherent;
 		/* The SMMU is only really of interest to bare-metal hypervisors */
 		/* iommus = <&smmu_gpu 0>; */
-		status = "disabled";
 	};
 
 	sram: sram@2e000000 {

arch/arm64/boot/dts/arm/juno-motherboard.dtsi

@@ -158,7 +158,8 @@ v2m_sysctl: sysctl@20000 {
 				};
 
 				apbregs@10000 {
-					compatible = "syscon", "simple-mfd";
+					compatible = "arm,juno-fpga-apb-regs",
+						     "syscon", "simple-mfd";
 					reg = <0x010000 0x1000>;
 					ranges = <0x0 0x10000 0x1000>;
 					#address-cells = <1>;