linux-kernel - [PATCH v9 3/5] dt-bindings: gpu: img,powervr-rogue: Add TH1520 GPU compatible

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Message-Id: <20250731-apr_14_for_sending-v9-3-c242dc1ffc14@samsung.com>
Date: Thu, 31 Jul 2025 15:50:13 +0200
From: Michal Wilczynski <m.wilczynski@...sung.com>
To: Guo Ren <guoren@...nel.org>, Fu Wei <wefu@...hat.com>,  Rob Herring
	<robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,  Conor Dooley
	<conor+dt@...nel.org>,  Michal Wilczynski <m.wilczynski@...sung.com>, 
	Bartosz Golaszewski <brgl@...ev.pl>, Philipp Zabel <p.zabel@...gutronix.de>,
	Frank Binns <frank.binns@...tec.com>, Matt Coster <matt.coster@...tec.com>,
	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>,  Paul Walmsley
	<paul.walmsley@...ive.com>,  Palmer Dabbelt <palmer@...belt.com>, Albert Ou
	<aou@...s.berkeley.edu>,  Alexandre Ghiti <alex@...ti.fr>, Ulf Hansson
	<ulf.hansson@...aro.org>,  Marek Szyprowski <m.szyprowski@...sung.com>, 
	Drew Fustini <fustini@...nel.org>
Cc: linux-riscv@...ts.infradead.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org, 
	dri-devel@...ts.freedesktop.org
Subject: [PATCH v9 3/5] dt-bindings: gpu: img,powervr-rogue: Add TH1520 GPU
 compatible

Update the img,powervr-rogue.yaml to include the T-HEAD TH1520 SoC's
specific GPU compatible string.

The thead,th1520-gpu compatible, along with its full chain
img,img-bxm-4-64, and img,img-rogue, is added to the
list of recognized GPU types.

While the BXM-4-64 GPU IP is designed with two distinct power domains,
the TH1520 SoC integrates it with only a single, unified power gate that
is controllable by the kernel.

The binding enforces this with a specific if block for the
thead,th1520-gpu compatible that requires a single power-domains entry
and disallows power-domain-names.

The B-series GPU rule is also updated to include img,img-bxm-4-64
and to explicitly exclude the TH1520.

Signed-off-by: Michal Wilczynski <m.wilczynski@...sung.com>
---
 .../devicetree/bindings/gpu/img,powervr-rogue.yaml | 29 +++++++++++++++++++++-
 1 file changed, 28 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml b/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml
index 24ce46ba0b7015fca799f045ee2ccdd258088068..e47e0f3d1b5078b3050e26f6c1ac175edec528ec 100644
--- a/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml
+++ b/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml
@@ -21,6 +21,11 @@ properties:
           # work with newer dts.
           - const: img,img-axe
           - const: img,img-rogue
+      - items:
+          - enum:
+              - thead,th1520-gpu
+          - const: img,img-bxm-4-64
+          - const: img,img-rogue
       - items:
           - enum:
               - ti,j721s2-gpu
@@ -96,7 +101,29 @@ allOf:
       properties:
         compatible:
           contains:
-            const: img,img-bxs-4-64
+            const: thead,th1520-gpu
+    then:
+      properties:
+        power-domains:
+          items:
+            - description: The single, unified power domain for the GPU on the
+                TH1520 SoC, integrating all internal IP power domains.
+        power-domain-names: false
+      required:
+        - power-domains
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - img,img-bxm-4-64
+              - img,img-bxs-4-64
+      not:
+        properties:
+          compatible:
+            contains:
+              const: thead,th1520-gpu
     then:
       properties:
         power-domains:

-- 
2.34.1