linux-kernel - [PATCH v6 03/20] dt-bindings: gpu: Add Imagination Technologies PowerVR/IMG GPU

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Message-Id: <20230906095542.3280699-4-sarah.walker@imgtec.com>
Date:   Wed,  6 Sep 2023 10:55:25 +0100
From:   Sarah Walker <sarah.walker@...tec.com>
To:     <dri-devel@...ts.freedesktop.org>
CC:     <frank.binns@...tec.com>, <donald.robson@...tec.com>,
        <boris.brezillon@...labora.com>, <airlied@...il.com>,
        <daniel@...ll.ch>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <maarten.lankhorst@...ux.intel.com>, <mripard@...nel.org>,
        <tzimmermann@...e.de>, <corbet@....net>,
        <christian.koenig@....com>, <linus.walleij@...aro.org>,
        <matt.coster@...tec.com>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-doc@...r.kernel.org>,
        <faith.ekstrand@...labora.com>, <afd@...com>, <hns@...delico.com>,
        <matthew.brost@...el.com>, <luben.tuikov@....com>,
        <dakr@...hat.com>
Subject: [PATCH v6 03/20] dt-bindings: gpu: Add Imagination Technologies PowerVR/IMG GPU

Add the device tree binding documentation for the IMG AXE GPU used in
TI AM62 SoCs.

Co-developed-by: Frank Binns <frank.binns@...tec.com>
Signed-off-by: Frank Binns <frank.binns@...tec.com>
Signed-off-by: Sarah Walker <sarah.walker@...tec.com>
---
Changes since v5:
- Update compatible string & description to match marketing name
- Remove unnecessary clock-names definition in ti,am62-gpu constraints
- Document that GPU revision is discoverable

Changes since v4:
- Add clocks constraint for ti,am62-gpu
- Remove excess address and size cells in example
- Remove interrupt name and add maxItems
- Make property order consistent between dts and bindings doc
- Update example to match dts

Changes since v3:
- Remove oneOf in compatible property
- Remove power-supply (not used on AM62)

Changes since v2:
- Add commit message description
- Remove mt8173-gpu support (not currently supported)
- Drop quotes from $id and $schema
- Remove reg: minItems
- Drop _clk suffixes from clock-names
- Remove operating-points-v2 property and cooling-cells (not currently
  used)
- Add additionalProperties: false
- Remove stray blank line at the end of file

 .../devicetree/bindings/gpu/img,powervr.yaml  | 73 +++++++++++++++++++
 MAINTAINERS                                   |  7 ++
 2 files changed, 80 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/gpu/img,powervr.yaml

diff --git a/Documentation/devicetree/bindings/gpu/img,powervr.yaml b/Documentation/devicetree/bindings/gpu/img,powervr.yaml
new file mode 100644
index 000000000000..51ee0f3d6e48
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpu/img,powervr.yaml
@@ -0,0 +1,73 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (c) 2023 Imagination Technologies Ltd.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/gpu/img,powervr.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Imagination Technologies PowerVR and IMG GPU
+
+maintainers:
+  - Sarah Walker <sarah.walker@...tec.com>
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - ti,am62-gpu
+      - const: img,img-axe # IMG AXE GPU model/revision is fully discoverable
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    minItems: 1
+    maxItems: 3
+
+  clock-names:
+    items:
+      - const: core
+      - const: mem
+      - const: sys
+    minItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  power-domains:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - interrupts
+
+additionalProperties: false
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: ti,am62-gpu
+    then:
+      properties:
+        clocks:
+          maxItems: 1
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/soc/ti,sci_pm_domain.h>
+
+    gpu: gpu@...0000 {
+        compatible = "ti,am62-gpu", "img,img-axe";
+        reg = <0x0fd00000 0x20000>;
+        clocks = <&k3_clks 187 0>;
+        clock-names = "core";
+        interrupts = <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>;
+        power-domains = <&k3_pds 187 TI_SCI_PD_EXCLUSIVE>;
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index 231a5e6fd52e..c057daebbfc1 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -10140,6 +10140,13 @@ IMGTEC IR DECODER DRIVER
 S:	Orphan
 F:	drivers/media/rc/img-ir/
 
+IMGTEC POWERVR DRM DRIVER
+M:	Frank Binns <frank.binns@...tec.com>
+M:	Sarah Walker <sarah.walker@...tec.com>
+M:	Donald Robson <donald.robson@...tec.com>
+S:	Supported
+F:	Documentation/devicetree/bindings/gpu/img,powervr.yaml
+
 IMON SOUNDGRAPH USB IR RECEIVER
 M:	Sean Young <sean@...s.org>
 L:	linux-media@...r.kernel.org
-- 
2.42.0