From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 20:49:45 +0200
Subject: Adding upstream version 6.1.76.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../devicetree/bindings/iommu/rockchip,iommu.yaml  | 83 ++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iommu/rockchip,iommu.yaml

(limited to 'Documentation/devicetree/bindings/iommu/rockchip,iommu.yaml')

diff --git a/Documentation/devicetree/bindings/iommu/rockchip,iommu.yaml b/Documentation/devicetree/bindings/iommu/rockchip,iommu.yaml
new file mode 100644
index 000000000..ba9124f72
--- /dev/null
+++ b/Documentation/devicetree/bindings/iommu/rockchip,iommu.yaml
@@ -0,0 +1,83 @@
+# SPDX-License-Identifier: GPL-2.0-only
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iommu/rockchip,iommu.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Rockchip IOMMU
+
+maintainers:
+  - Heiko Stuebner <heiko@sntech.de>
+
+description: |+
+  A Rockchip DRM iommu translates io virtual addresses to physical addresses for
+  its master device. Each slave device is bound to a single master device and
+  shares its clocks, power domain and irq.
+
+  For information on assigning IOMMU controller to its peripheral devices,
+  see generic IOMMU bindings.
+
+properties:
+  compatible:
+    enum:
+      - rockchip,iommu
+      - rockchip,rk3568-iommu
+
+  reg:
+    items:
+      - description: configuration registers for MMU instance 0
+      - description: configuration registers for MMU instance 1
+    minItems: 1
+
+  interrupts:
+    items:
+      - description: interruption for MMU instance 0
+      - description: interruption for MMU instance 1
+    minItems: 1
+
+  clocks:
+    items:
+      - description: Core clock
+      - description: Interface clock
+
+  clock-names:
+    items:
+      - const: aclk
+      - const: iface
+
+  "#iommu-cells":
+    const: 0
+
+  power-domains:
+    maxItems: 1
+
+  rockchip,disable-mmu-reset:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: |
+      Do not use the mmu reset operation.
+      Some mmu instances may produce unexpected results
+      when the reset operation is used.
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - "#iommu-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/rk3399-cru.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    vopl_mmu: iommu@ff940300 {
+      compatible = "rockchip,iommu";
+      reg = <0xff940300 0x100>;
+      interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>;
+      clocks = <&cru ACLK_VOP1>, <&cru HCLK_VOP1>;
+      clock-names = "aclk", "iface";
+      #iommu-cells = <0>;
+    };
-- 
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