linux-kernel - [RFC PATCH v2 12/19] dt-bindings: gpu: Add compatibles for T-HEAD TH1520 GPU

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Message-Id: <20241223125553.3527812-13-m.wilczynski@samsung.com>
Date: Mon, 23 Dec 2024 13:55:46 +0100
From: Michal Wilczynski <m.wilczynski@...sung.com>
To: mturquette@...libre.com, sboyd@...nel.org, robh@...nel.org,
	krzk+dt@...nel.org, conor+dt@...nel.org, drew@...7.com, guoren@...nel.org,
	wefu@...hat.com, jassisinghbrar@...il.com, paul.walmsley@...ive.com,
	palmer@...belt.com, aou@...s.berkeley.edu, frank.binns@...tec.com,
	matt.coster@...tec.com, maarten.lankhorst@...ux.intel.com,
	mripard@...nel.org, tzimmermann@...e.de, airlied@...il.com, simona@...ll.ch,
	ulf.hansson@...aro.org, jszhang@...nel.org, p.zabel@...gutronix.de,
	m.szyprowski@...sung.com
Cc: linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
	dri-devel@...ts.freedesktop.org, linux-pm@...r.kernel.org, Michal Wilczynski
	<m.wilczynski@...sung.com>
Subject: [RFC PATCH v2 12/19] dt-bindings: gpu: Add compatibles for T-HEAD
 TH1520 GPU

Add a new SoC-specific compatible ("thead,th1520-gpu") for the T-HEAD
TH1520 GPU, alongside the Imagination BXM family compatible
("img,img-bxm").  This documents the GPU integration on the T-HEAD
platform.

Also adjust clock name constraints to accommodate a second clock named
"sys" instead of "mem" for T-HEAD. This is achieved by changing the
order, and making the 'sys' appear before 'mem'.

Provide example of the new GPU node.

Signed-off-by: Michal Wilczynski <m.wilczynski@...sung.com>
---
 .../bindings/gpu/img,powervr-rogue.yaml       | 32 +++++++++++++++++--
 1 file changed, 30 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml b/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml
index 4078cc816ea1..1eb1c15baec4 100644
--- a/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml
+++ b/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml
@@ -15,7 +15,10 @@ properties:
     items:
       - enum:
           - ti,am62-gpu
-      - const: img,img-axe # IMG AXE GPU model/revision is fully discoverable
+          - thead,th1520-gpu
+      - enum:
+          - img,img-axe # IMG AXE GPU model/revision is fully discoverable
+          - img,img-bxm
 
   reg:
     maxItems: 1
@@ -27,8 +30,8 @@ properties:
   clock-names:
     items:
       - const: core
-      - const: mem
       - const: sys
+      - const: mem
     minItems: 1
 
   interrupts:
@@ -62,6 +65,15 @@ allOf:
       properties:
         clocks:
           maxItems: 1
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: thead,th1520-gpu
+    then:
+      properties:
+        clocks:
+          maxItems: 2
 
 examples:
   - |
@@ -77,3 +89,19 @@ examples:
         interrupts = <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>;
         power-domains = <&k3_pds 187 TI_SCI_PD_EXCLUSIVE>;
     };
+
+    #include <dt-bindings/reset/thead,th1520-reset.h>
+    #include <dt-bindings/clock/thead,th1520-clk-ap.h>
+    #include <dt-bindings/power/thead,th1520-power.h>
+
+    gpu: gpu@...0000 {
+        compatible = "thead,th1520-gpu", "img,img-bxm";
+        reg = <0xfff0000 0x1000>;
+        interrupt-parent = <&plic>;
+        interrupts = <102 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&clk CLK_GPU_CORE>, <&clk CLK_GPU_CFG_ACLK>;
+        clock-names = "core", "sys";
+        power-domains = <&pd TH1520_AON_GPU_PD>;
+        resets = <&rst TH1520_RESET_ID_GPU>;
+        reset-names = "gpu";
+    };
-- 
2.34.1