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Message-ID: <20250829230442.1495926-1-robh@kernel.org>
Date: Fri, 29 Aug 2025 18:04:40 -0500
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Joel Stanley <joel@....id.au>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>,
Thomas Zimmermann <tzimmermann@...e.de>,
David Airlie <airlied@...il.com>,
Simona Vetter <simona@...ll.ch>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Andrew Jeffery <andrew@...econstruct.com.au>,
Lee Jones <lee@...nel.org>
Cc: linux-aspeed@...ts.ozlabs.org,
dri-devel@...ts.freedesktop.org,
devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org
Subject: [PATCH] dt-bindings: gpu: Convert aspeed,ast2400-gfx to DT schema
Convert the ASpeed GFX Display Controller binding to DT schema format.
There was a duplicate, incomplete binding in mfd which can be dropped.
Signed-off-by: Rob Herring (Arm) <robh@...nel.org>
---
.../bindings/gpu/aspeed,ast2400-gfx.yaml | 58 +++++++++++++++++++
.../devicetree/bindings/gpu/aspeed-gfx.txt | 41 -------------
.../devicetree/bindings/mfd/aspeed-gfx.txt | 17 ------
MAINTAINERS | 2 +-
4 files changed, 59 insertions(+), 59 deletions(-)
create mode 100644 Documentation/devicetree/bindings/gpu/aspeed,ast2400-gfx.yaml
delete mode 100644 Documentation/devicetree/bindings/gpu/aspeed-gfx.txt
delete mode 100644 Documentation/devicetree/bindings/mfd/aspeed-gfx.txt
diff --git a/Documentation/devicetree/bindings/gpu/aspeed,ast2400-gfx.yaml b/Documentation/devicetree/bindings/gpu/aspeed,ast2400-gfx.yaml
new file mode 100644
index 000000000000..77ec5ad10ac6
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpu/aspeed,ast2400-gfx.yaml
@@ -0,0 +1,58 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/gpu/aspeed,ast2400-gfx.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ASPEED GFX Display Controller
+
+maintainers:
+ - Joel Stanley <joel@....id.au>
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - aspeed,ast2500-gfx
+ - aspeed,ast2400-gfx
+ - const: syscon
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ resets:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ memory-region:
+ maxItems: 1
+ description:
+ a reserved-memory region to use for the framebuffer.
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+ - resets
+ - memory-region
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/aspeed-clock.h>
+
+ display@...e6000 {
+ compatible = "aspeed,ast2500-gfx", "syscon";
+ reg = <0x1e6e6000 0x1000>;
+ clocks = <&syscon ASPEED_CLK_GATE_D1CLK>;
+ resets = <&syscon ASPEED_RESET_CRT1>;
+ interrupts = <0x19>;
+ memory-region = <&gfx_memory>;
+ };
diff --git a/Documentation/devicetree/bindings/gpu/aspeed-gfx.txt b/Documentation/devicetree/bindings/gpu/aspeed-gfx.txt
deleted file mode 100644
index 958bdf962339..000000000000
--- a/Documentation/devicetree/bindings/gpu/aspeed-gfx.txt
+++ /dev/null
@@ -1,41 +0,0 @@
-Device tree configuration for the GFX display device on the ASPEED SoCs
-
-Required properties:
- - compatible
- * Must be one of the following:
- + aspeed,ast2500-gfx
- + aspeed,ast2400-gfx
- * In addition, the ASPEED pinctrl bindings require the 'syscon' property to
- be present
-
- - reg: Physical base address and length of the GFX registers
-
- - interrupts: interrupt number for the GFX device
-
- - clocks: clock number used to generate the pixel clock
-
- - resets: reset line that must be released to use the GFX device
-
- - memory-region:
- Phandle to a memory region to allocate from, as defined in
- Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt
-
-
-Example:
-
-gfx: display@...e6000 {
- compatible = "aspeed,ast2500-gfx", "syscon";
- reg = <0x1e6e6000 0x1000>;
- reg-io-width = <4>;
- clocks = <&syscon ASPEED_CLK_GATE_D1CLK>;
- resets = <&syscon ASPEED_RESET_CRT1>;
- interrupts = <0x19>;
- memory-region = <&gfx_memory>;
-};
-
-gfx_memory: framebuffer {
- size = <0x01000000>;
- alignment = <0x01000000>;
- compatible = "shared-dma-pool";
- reusable;
-};
diff --git a/Documentation/devicetree/bindings/mfd/aspeed-gfx.txt b/Documentation/devicetree/bindings/mfd/aspeed-gfx.txt
deleted file mode 100644
index aea5370efd97..000000000000
--- a/Documentation/devicetree/bindings/mfd/aspeed-gfx.txt
+++ /dev/null
@@ -1,17 +0,0 @@
-* Device tree bindings for Aspeed SoC Display Controller (GFX)
-
-The Aspeed SoC Display Controller primarily does as its name suggests, but also
-participates in pinmux requests on the g5 SoCs. It is therefore considered a
-syscon device.
-
-Required properties:
-- compatible: "aspeed,ast2500-gfx", "syscon"
-- reg: contains offset/length value of the GFX memory
- region.
-
-Example:
-
-gfx: display@...e6000 {
- compatible = "aspeed,ast2500-gfx", "syscon";
- reg = <0x1e6e6000 0x1000>;
-};
diff --git a/MAINTAINERS b/MAINTAINERS
index 11a58d3279ec..536a0403edda 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -7592,7 +7592,7 @@ M: Joel Stanley <joel@....id.au>
L: linux-aspeed@...ts.ozlabs.org (moderated for non-subscribers)
S: Supported
T: git https://gitlab.freedesktop.org/drm/misc/kernel.git
-F: Documentation/devicetree/bindings/gpu/aspeed-gfx.txt
+F: Documentation/devicetree/bindings/gpu/aspeed,ast2400-gfx.yaml
F: drivers/gpu/drm/aspeed/
DRM DRIVER FOR AST SERVER GRAPHICS CHIPS
--
2.50.1
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